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Scavenging Poundland LED COBs and a hack 

bigclivedotcom
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Your average Pound shop or Dollar store usually has some very useful low voltage (about 3V) LED arrays that can be used in projects or to fix other lights.
(Note that some of the round lights may apparently run quite hot.)
The COB (Chip On Board) modules usually have an aluminium backed PCB with flip-chip LEDs on it, protected by a layer of phosphor loaded gel. A flip-chip LED is a bare "dice" with metal contacts formed on the back of it as part of the manufacturing process, so it can be soldered directly in place with no need for bond wires.
For project use these COB arrays will need a resistor top limit current.
In the video I also converted one of the lights into a rugged magnetic emergency light that charges from a USB charger. If making your own in this style the batteries MUST be either Nickel Metal Hydride (NiMh) or old fashioned Nickel Cadmium (NiCad) cells. Non rechargeable cells like alkaline or zinc chloride will pressurise and may explode.
You could also use a protected lithium cell. But it would absolutely have to have protection fitted.
The resistor values can be juggled to suit your needs, noting that continuous trickle charging at high currents will reduce the working life of NiMh cells.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
www.bigclive.co...
This also keeps the channel independent of RU-vid's advertising algorithms allowing it to be a bit more dangerous and naughty.

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30 сен 2024

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Комментарии : 353   
@jansenart0
@jansenart0 3 года назад
Say what you want about these LED lamps, they're head and shoulders above what you could get for 20x the price 30 years ago.
@dfpguitar
@dfpguitar 3 года назад
thorium lanterns though
@jansenart0
@jansenart0 3 года назад
@@dfpguitar mmmmmm, frontal lobe cancer
@MuscarV2
@MuscarV2 3 года назад
@Joachim Shekelberg which isn't a fault with the lights. It's the manufacturing that's bad, you can just resolder.
@YourAverageReviews
@YourAverageReviews Год назад
@Gazr Gazr I don't think that's why, it's because they didn't use LEDs.
@AsymptoteInverse
@AsymptoteInverse 3 года назад
Ever since I started watching this channel and Ashens, I've been really curious to see a direct or semi-direct comparison between products from Poundland and ones from various American dollar stores. Even taking into account that ₤1 = $1.31 (at the time of this comment, anyway), the stuff in Poundland seems to be slightly but noticeably better than anything I see in my local dollar stores. Of course, it might just be that the items worth reviewing are the best and the worst, which might be distorting things. Having never been to Poundland myself, I couldn't say. Or it might be that, when you're selling things so cheap, that extra $0.31 makes a big difference. And I'm sure it depends on the store itself. I don't remember the point I was trying to make, but it's just an interesting regional difference that I've noticed.
@SimonLanghof
@SimonLanghof 3 года назад
7 linear COBs and the round one and you have a seven segment display (with dot)
@RawTopShot
@RawTopShot 3 года назад
That round cob looks to be a decent size and output to replace the paltry 5w G4 halogen setup in the lid of a ReefOne 15L BiOrb. Obviously it's not a straight swap, but it'd fit the available space. Just need to convert the 13v AC that the wall plug puts out, into a 13-12v DC ( or less ) , but that can be done in-line away from the tank head. Hmmm I love Clive's videos 😁👍
@eDoc2020
@eDoc2020 3 года назад
@@RawTopShot I'd look at using a capacitive dropper, probably with bipolar electrolytics. The original 5w bulb would draw around 400mA which should be a decent current for these COBs.
@DrGreenGiant
@DrGreenGiant 3 года назад
Looks like you could almost fit an 18650 in the shaft of the first one
@chrisrogers2848
@chrisrogers2848 3 года назад
Just opened the comments to post that myself!
@Will-sc3hw
@Will-sc3hw 3 года назад
Won't work. The internal space is far too less. I tried
@Yrouel86
@Yrouel86 3 года назад
If that doesn't fit even after dremeling out part of the original battery compartment you can perhaps use a rectangular cell in place of the original battery compartment (removing as much plastic as possible to make room but keeping the ability to retain the cover) and then stuff a tp4056 in the base (above the magnet) with a small hole for the micro usb port
@Will-sc3hw
@Will-sc3hw 3 года назад
@@Yrouel86 I managed to fit a rectangular pouch cell and a tp4056 in the battery compartment without any dremelling. Although its a bit tight
@Yrouel86
@Yrouel86 3 года назад
@@Will-sc3hw Yeah there are indeed small pouch or cellphone cells that can fit in there without any modification but if you remove as much plastic as possible you can likely fit a slightly larger cell so it'll last longer. I prefer not to have the TP4056 in close quarters with the cell if possible because the chip does get hot when charging, especially if you can use the full 1A charge current, so I usually avoid risking to cook the battery. Also speaking of charging current remember that the module is set by default to charge at 1A but if you use a small cell you should adjust the current accordingly by changing R3 to the appropriate value (refer to the datasheet for that). I usually set it to charge at around half C or even less for the really small cells
@dfpguitar
@dfpguitar 3 года назад
oh how I despise torches that use 3xAAA 's!
@TheNiteNinja19
@TheNiteNinja19 3 года назад
It feels so antiquated now that I discovered 18650 flashlights. I even have one with a 26650 battery. Way more convenient.
@licensetodrive9930
@licensetodrive9930 3 года назад
I'm glad I'm not alone in this thought! Torches shouldn't use AAAs! You can make a useful, bright floodlight by hacking parts from Poundland purchases and a 3D printer, notably salvaging those two COB LEDs from the lightswitch light thing, and the 18650+charging board from one of their cheap USB power banks.
@vgamesx1
@vgamesx1 3 года назад
Regardless of the size of cells, I love products that three A type cells, makes them perfect for hacking in a tp4056 + lithium cell or 5v like Clive did here.
@TheSpotify95
@TheSpotify95 3 года назад
@@TheNiteNinja19 Trouble is, you now can't buy Li-Ion 18650 batteries on eBay because eBay have banned the sale of such cells!
@horacewonghy
@horacewonghy 3 года назад
I use single AA/AAA with joule thief
@ZaneDaMagicPufferDragon
@ZaneDaMagicPufferDragon 3 года назад
Hey I’ve had those exact cheap digital calipers now for 3+ years and they’re awesome 😎 for the cost!!!
@idontwantachannelimjustcom7745
@idontwantachannelimjustcom7745 3 года назад
Thank you for being your entertaining self. The world needs more of you.
@VorpalGun
@VorpalGun 3 года назад
Why do lamps even have those blinking modes? What is the use cases supposed to be? I just find it annoying having to cycle through to reach the mode I use.
@nogravitas7585
@nogravitas7585 3 года назад
The supposed use case is as an SOS without the person in need of help (who may be injured) to actually swing the light up and down. Its pretty doubtful that anyone would ever use a cheap torch to signal for help when hiking but my guess is the only companies who can afford R&D on fancy new integrated circuits are the ones selling to the mountain climbing crowd for $$$ and the cheapie ebay specials use the same chips one generation back for other benefits (lower quiescent current?) and to save costs.
@snakezdewiggle6084
@snakezdewiggle6084 3 года назад
It's a leftover from thousands of years ago, when fires were used for signaling. Semaphore.
@AndyGraceMedia
@AndyGraceMedia 3 года назад
They are primarily for breakdowns on highways. Just placing one or two a few hundred metres up from an accident or breakdown at night alerts drivers something is amiss up ahead so slow down. The red and blue strobing LED ones are especially effective as people think it's the police and immediately slow down.
@Lizlodude
@Lizlodude 3 года назад
*attempts to short a thing with a screwdriver specifically designed not to short things* I guess it's doing its job then
@Jmixup
@Jmixup 3 года назад
Heh, always scavenging LED's and LED COBs out of anything and everything. OK, I may scavenge just about anything electronic lol. Got fed up of my LED moon always needing batteries so now it's USB or battery powered, yay!
@sandordugalin8951
@sandordugalin8951 3 года назад
That thumbnail be like "Today we're tearing apart a Large Hadron Collider." Everyone: "Where... where did you get that? Clive? Clive. Clive?"
@ToWhom
@ToWhom 3 года назад
Poundland
@ToWhom
@ToWhom 3 года назад
Ebay. Here are the key words to search for...
@ericbell5272
@ericbell5272 3 года назад
I thought it was the electrocution of an egg
@IrishSkruffles
@IrishSkruffles 3 года назад
The digital calipers that are in Aldi/Lidl from time to time are quite good, all metal, good repeatability and low quiescent current all for about €12 if I remember correctly
@AAAyyyGGG
@AAAyyyGGG 3 года назад
I bought one and it seemed to have sand in the mechanism - made a grating noise when sliding. Took it back and didn't want to risk another!
@snakezdewiggle6084
@snakezdewiggle6084 3 года назад
Yeah, cos we all want more Metal/Conductive tools while poking around live components. ;)
@IrishSkruffles
@IrishSkruffles 3 года назад
@@snakezdewiggle6084 Sure that just makes it more interesting!
@snowflakemelter1172
@snowflakemelter1172 3 года назад
@@AAAyyyGGG they are rough as a goats knee but they're cheap .
@budmartin3344
@budmartin3344 3 года назад
9:24 You can put Schotky in parallel with those two 22 Ohms resistors, Anode on battery +, so you waste less power when you are on battery mode due to low Vf of the diode, this will also allow you to set the charging current by selecting other value than 11 Ohms.
@ianide2480
@ianide2480 3 года назад
They claim that the "suggested videos" is from a complex algorithm. I'm seeing bigclive comments all over the videos that I watch. I can only assume that clive is the algorithm and I am being stalked. Been enjoying your channel for a while bud, stay safe my friend and thanks for the content thus far =)
@Herr_Bone
@Herr_Bone 3 года назад
Same here... so it‘s not only you who is that important. :-)
@ianide2480
@ianide2480 3 года назад
@@Herr_Bone Stalking us all, and here I thought we followed his channel. The whole time its been reversed.
@Will-sc3hw
@Will-sc3hw 3 года назад
Those worklights are great bought three of them. However I modified mines differently. I managed to squeeze in a small lithium pouch cell and a tp4056 into the battery compartment. Wanted to go with a 18650 or a smaller cylindrical cell however there's not much space inside the housing.
@covishen
@covishen 3 года назад
I got tired of putting AAA cells in the PIR module on my led strip I use in my cat feeding area, so I installed a dimmer switch and usb lead for them. Now I don't worry if the batteries are dead. It was this channel that taught me how to do that.
@malcolmclements9254
@malcolmclements9254 3 года назад
I bought the flat one the other day, got me through the woods on the way home, good torch.
@piconano
@piconano 3 года назад
Make it bigger, move the 18650 into the handle, use an adjustable voltage booster to regulate the voltage to the LED via a pot, and I'd buy a light like that. But not a bubblegum machine toy like this one. It's breaking as I'm looking at it! I bought power switches from AliExpress like the one in the handheld model. I think some Chinese entrepreneur (maker) made the plastic mold cheaply, and started building these in his basement! Smart.
@SigEpBlue
@SigEpBlue 3 года назад
Are zinc-chloride cells really less expensive to manufacture in 2020 than standard alkaline cells?
@nyetloki
@nyetloki 3 года назад
Sunk costs. The factories already exist and the machinery processes set. Retooling would be too expensive plus labor costs.
@idontwantachannelimjustcom7745
@idontwantachannelimjustcom7745 3 года назад
Nothing ever shorts out when you want it to...
@loddude5706
@loddude5706 3 года назад
Igor's Law . . .
@magnets1000
@magnets1000 3 года назад
The plastic cage on that worklight is pointless as the LEDs are recessed anyway, it just causes those annoying shadows 🤔
@Alexander_l322
@Alexander_l322 3 года назад
I thought the same when I saw it too.
@michaelthibault7930
@michaelthibault7930 3 года назад
Snips… where are my snips? One moment, please. (Snip the cage off _near_ the body, not flush with it, angled so as not to create small hooks and to hold the light bay off of a flat surface…
@TheAncientOneYT
@TheAncientOneYT 3 года назад
lol, got a laugh when you pulled out the same calipers I purchased a few months ago :D
@Dime_Bar
@Dime_Bar 3 года назад
What cob was it that you really like Clive? Me personally i like a cheese and onion cob.
@watsoft70
@watsoft70 3 года назад
Love the hack and the fact you show how it's done, but £2 for the light and a fiver for the components to make it rechargeable, lol.
@FurryKovu
@FurryKovu 3 года назад
LOOOOoovvee that little USB tester. little dude has done so much work for gizmo battery analysis and proving (or disproving) capacities!
@TheNiteNinja19
@TheNiteNinja19 3 года назад
I just recently fixed my tactfire LED headlamp that runs on dual 18650 batteries. I only got it for $10 like 3 years ago, but I use it nightly at work and it's like my little buddy that lets me see at night. Lasts weeks on a charge. The wire routing was weird, the conduit goes from the battery, to the front where the switch is at, then goes back to the battery circuit board, where it then goes to the front light. Wire that goes from the circuit board to the front light broke it's solder, so I fired up my iron and resoldered all the wires. Should be good for another 3+ years. Simple fix but I was extremely happy.
@Jan-yc2lr
@Jan-yc2lr 3 года назад
I have those callipers. They feel like it's ordinary plastic.
@licensetodrive9930
@licensetodrive9930 3 года назад
Poundland COB lights are crap....because they run off AAA batteries, but they're much better when you tear them apart and hack in a USB recharging board from one of their USB battery banks and a lipo/lion, then you've got a very useful USB rechargeable light source. Using those Amazon Echo Dot powerbanks from Poundland they had for £5 each (bargain even for their two 4000mAh cells inside) I hacked on the COBs from those lightswitches, plus voltage regulators, ending up with two very bright USB rechargable floodlights.
@Opel_Guy
@Opel_Guy 3 года назад
I've converted a work light that originally took three AA batteries in a holder. I used an 18650 battery and charge circuit PCB from a Poundland power bank. Tight squeeze but it all fits in and have the added bonus it can still be used as a power bank! Sockets are protected as.they are under the battery compartment cover which unscrews. As a waterproof light, this retains this ability.
@coondogtheman
@coondogtheman 3 года назад
I've USB-ified some of my flashlights because they drain batteries quick. Most of the time the lights have resistors built in so I just solder the USB lead onto the battery terminals. I have this tiny bendy light that ran on LR44 button cells and I put a short USB lead and I use it on a power bank. It even makes the power bank turn on when you press the button on the light. I have a worklight like the one here and it's very bright. I don't plan on modding it.
@OneBoysDreamFilm
@OneBoysDreamFilm 3 года назад
Hi big clive.... are you the guy the Amazon show, “truth seekers” is based on ??? 😁
@W4BIN
@W4BIN 3 года назад
Since the Cob won't burn you throw the grill in the round file. Ron W4BIN
@yearls
@yearls 3 года назад
I learn a lot from your videos, I am also a bit of a tinkerer, I would often find myself opening things up and learning something new. Those are quite roomy inside, I'm sure they can be modified to be so much better. You pay a couple of pounds for the housing, and have fun with the modifications. :D
@ntsecrets
@ntsecrets 3 года назад
They sell that exact same light (the one with the handle) with batteries for I think $3 USD in New England at a place called “Ocean State Job Lot” which sounds like the NE version of Poundland. My kid uses it and the grille broke off and the switch is touchy but still works.
@stevetobias4890
@stevetobias4890 3 года назад
I would have used a pouch style lithium battery and also included a female USB port to plug the cable into. Great video however, very good indeed.
@davidfalconer8913
@davidfalconer8913 2 года назад
Take a new lamp ( as above ) and fit a diode bridge rectifier across the COB + a 10 microfarad electrolytic ... then supply the AC side of the bridge via a MAINS RATED 100nF capacitor and 220 Ohm resistor or use a 100nF snubber ( neutral to other AC input of bridge ) connect other side of 100nF to mains live ( ! ) = super efficient " night light " that will last forever ( my version has been continuously connected for 10 years ( or more ! ) hint : X2 100nF motor noise suppressors are ideal !
@frankhovis
@frankhovis 3 года назад
They do a rectangular light with a big on/off switch in the middle and 2x COB LEDs behind a diffuser - they are two COB lights very similar (maybe identical) to the LEDs in that worklight. They also do a blue COB headlight (worn on the head..) which has a smaller COB on a heatsink/PCB controlled by a the usual On/Low/Flash controller.
@chrispwilliams6297
@chrispwilliams6297 3 года назад
Stupid question, at 8:30 why didn’t you just put 2 resistors before the switch instead of 2x2?
@annoloki
@annoloki 3 года назад
I use the circuit board from poundland's £1 mini USB powerbank, connected to a small mobile phone battery that exactly fits in the battery compartment for 3 x AAA... then you can take power directly from the battery to have 3.7-4.2V that doesn't turn off if the power gets low, or take the fixed 5V from the charger board, which is much brighter (and gets hot without resistors) and turns the power off for undercharge protection. Very easy way to make something USB chargeable + use lithium ion battery for £1 :-)
@FIXDIY
@FIXDIY 3 года назад
I am confused as to who buys a pocket lamp 🔦at this time, is the flash of a phone not enough! Or a spark plug Or a candle 😌
@P25AES
@P25AES 3 года назад
Thanks for reminding me that I need to order a new set of calipers!
@bigclivedotcom
@bigclivedotcom 3 года назад
I use mine a lot. They're a very useful tool. Especially for 3D printing object design.
@ZeedijkMike
@ZeedijkMike 3 года назад
I have just received my caliper (metal/digital) version. Does help quite a bit as my eyes can't read the analog one very well without glasses (that are never in the place I need them)
@P25AES
@P25AES 3 года назад
@@ZeedijkMike when 100% precision is not needed. These cheaper ebay/Amazon options are not to shabby.
@horrovac
@horrovac 3 года назад
Mind, though, AvE has done a review of these shitty chinese calipers and found that the quiescent current is quite high (more or less the same whether they're turned on or off). In my case that would mean that whenever I need them, the battery would be flat. That's why I haven't ordered one. I have contemplated bodging a hardware switch onto them, to physically separate the battery when not in use. As long as one remembers to zero them out (as you always should, really), it should be ok. Also, I'd go for the metal ones (even if it's pure chinesium) instead of plastic or composite. You need hard(ish) measuring surfaces, and it would be easy to wear/nick them and have false readings. I use standard vernier calipers. Always works. And I have no trouble reading off them (yet... my sight is going...).
@MattyEngland
@MattyEngland 3 года назад
@@horrovac I have a set of those cheap metal calipers, and as said, the battery will be completely flat every time you come to use them. Useless.
@Ghosthuntert1
@Ghosthuntert1 3 года назад
It Seems Clive has his spies everywhere. Whenever I visit my local el cheapo store ( Otherwise known as The Reject Shop here in Australia ) looking for items to experiment with/on , The items I purchase are debunked on Clive's channel.. Usually only a couple of weeks before but then again, some have been well over a year.. I take great pleasure in debunking some of the more dangerous items I have found . From USB chargers with mains potential across them, Mains Power sockets where the on off switch is in the Neutral wire on both outlets, Power saver plugs which do nothing and lots of cheap chinese rechargeable batteries with unholy capacities printed on them. I even found the LED lamps that Clive has studied and modified plus I rebuilt the solar LED PIR outside lamps with better batteries and a much better solar charging regulator... Clive, Keep up with the videos please, you are legend among Aussie Electronic and electrical enthusiasts..
@electroniquepassion
@electroniquepassion 3 года назад
👍👋😉🇫🇷
@boblewis5558
@boblewis5558 3 года назад
Sod USB Clive, those are ideal for fixed wiring under the car bonnet as fixed position worklights at night. Simple, cheap buck converter to drive them off the car battery. Or car boot lights, or car footwell lights, or rear passenger, under seat footwell lights. 👍👍👍
@JayH7745
@JayH7745 3 года назад
Hey Clive, very nice modification to that small "super cute" work light. Being here in the midwest of the United States, it's difficult sometimes to find neat little LED lights like those two you showed in this video. Missouri, where I live has a lousy selection of these types of LED lights. It's like living out in the middle of nowhere. LOL Stay safe and stay healthy Clive. As always, I'm looking forward to your Saturday live stream.
@eDoc2020
@eDoc2020 3 года назад
The little blue Harbor Freight lights subject to the free coupons in every flyer are fairly similar with a hook and magnets but no handle. The old style had 27 discrete LEDs (and I believe they're still labelled as 27 LED on the shelves) but the newer version has a COB for the main light.
@theskett
@theskett 3 года назад
Damn thing still needs the unnecessary grill-work to be cut off... those shadow bars across the workpiece would drive me nuts :-)
@mueffe1357
@mueffe1357 3 года назад
Feels like a missed opportunity to crammed a joule thief inside. I had to crammed one inside my nephew Chinesium AC powered night light. The circuit has a very nice 3 LEDs capacitive dropper with very questionable tiny slide switch and the life wire very very very close to the board.
@therealjammit
@therealjammit 3 года назад
It looks like the 2824a might be a UIOTEC HSMS-2824. A 3 pin sot schottky diode.
@aurthorthing7403
@aurthorthing7403 3 года назад
This is what I've been doing. Swapping out bulbs for LED's in old flashlights and adding resistors in dollar store lights so they don't blind me and the batteries last a few days. I don't know where this craze for blinding white light has come from? I much rather have a decent light with firefly mode. In fact, I just bought a Klarus headlamp with a very awesome hands free mode. Thanks for the heads up on those.
@procactus9109
@procactus9109 3 года назад
It comes from the shit or non existent electronics found in torches that use 3 batteries
@-yeme-
@-yeme- 3 года назад
blinding white light makes people who buy dirt cheap torches think "wow, thats really bright" and saves the BOM and assembly cost of a resistor.
@twotone3070
@twotone3070 3 года назад
Drawback of the 'always on caliper' is that after a few months it won't come on at all because the cell will be flat, or at least that is my experience of a similar one. I have resorted to taking the cell out which is rather irritating, but slightly irritating than getting new cells.
@devcybiko
@devcybiko 3 года назад
BTW: If you strobed the LEDs - would the batteries last longer? Like 60+hz?
@renyn21
@renyn21 3 года назад
Are those calipers actually carbon fiber? I bought one and the listing was weird, hoped to get metal, got that light one. It says something about carbon fiber components on the back, but I thought it's plastic, because when you open it there's a stick coming out the back for depth measurement I think, and if I hold it by it, the whole thing bends, and I thought carbon fiber is very rigid.
@mcconnellphilip
@mcconnellphilip 3 года назад
What would happen if you put a diode across the two resistor that are limiting the charge to the battery.... so when the unit is not being changed by the USB more current would flow to the COB LED?
@joshuauriarte452
@joshuauriarte452 3 года назад
Chinese products are great to turn into dIy products and make them better. i remember having a chinese product and I paid like 20usd for it. I put some extra components and addons a long with better batteries and turn around and sold it for 80. The guy that bought it was supprised on the DIY work.
@drewanywar15977
@drewanywar15977 3 года назад
Could you not have used an 18650 micro usb charge board then you could have done away with the usb cable sticking out of the light?
@MadHatter764
@MadHatter764 3 года назад
You could put a schottky diode on the left side to bypass the resistors during discharge to avoid going through the 11 ohms, but it would drop 0.3V...would that be less than the voltage drop across the resistors ? Depends on the current I guess.
3 года назад
You did not take your new calipers apart, or hack them in any way. Or is that for another vid? The new 3 function calipers with the fraction capability I will buy next.
@deelkar
@deelkar 3 года назад
would it make sense to put a second schottky diode in parallel to the charging resistors (reversed) so you're getting more brightness from battery operation?
@IncertusetNescio
@IncertusetNescio 3 года назад
My thought as well. Why hamstring the brightness so much? 22 ohms is a lot for that voltage.
@fumthings
@fumthings 3 года назад
i was thinking, why not put the switch closer to the battery instead of at the charge resistors and then to the led resistors, that would still be 22 ohm on usb and 11 ohm on battery...
@AAAyyyGGG
@AAAyyyGGG 3 года назад
@@fumthings Same thought going through my mind... I think you mean put the resistors between the switch and the USB positive? Better go and buy one and check it out!!
@watsoft70
@watsoft70 3 года назад
OK, so I know very little about electronics, but could you not have had 1 set of resistors pre switch on the USB+ and had a more useful light or are the two needed to provide protection when the USB is powered and the lamps turned on?
@tasmedic
@tasmedic 3 года назад
Sorry to hear Ralfie's bike needed fixing. Did he accidentally fill it with diesel after one of his "Malt-mates" videos?
@magnumopus9631
@magnumopus9631 3 года назад
black birds ravage our yellow grains butchering very good wheat: resistor colour code after 35 years still know my resistor bands lmao teacher always said we would always know it cuz memory aid
@devcybiko
@devcybiko 3 года назад
I recently came across a bevy of these at the Dollar General for $1.00 ea. They are bright as the sun. Ima gonna go back and buy all of 'em!
@peterjensen6844
@peterjensen6844 3 года назад
Have you calibrated those calipers per AvE's percussive maintenance procedure?
@jakp8777
@jakp8777 3 года назад
They should really add a pound sign to the 2 label on the back. Some people may not realize what it means. Seems like deception on the part of pound land.
@RawTopShot
@RawTopShot 3 года назад
They ought to call it Poundsland 😂
@bigclivedotcom
@bigclivedotcom 3 года назад
They also sell in Europe, so it could also mean 2 Euro. Basically the price is two currency units.
@radius.indrawan
@radius.indrawan 3 года назад
Clive, if i mod your circuit by moving the charge resistor (which is next to the battery) up inline with USB IN (+) before the switch, so the battery (+) goes straight to the switch, the LED will lights brighter when powered by the battery, because the current from the battery to the LED only see 1 resistor, not 2, right? is it a good mod or a bad one?
@tinkerbot4148
@tinkerbot4148 3 года назад
You would just be swapping the brightness levels the other way round i.e. dimmer when charging, brighter when on battery power. That would drain the battery quicker.
@radius.indrawan
@radius.indrawan 3 года назад
@@tinkerbot4148 ah yes, i do prefer the battery to last longer.. thank you for point that out.
@michaelthibault7930
@michaelthibault7930 3 года назад
The objective is _to see,_ rather than to preserve the charge in the battery; a brighter light while on battery makes more sense.
@radius.indrawan
@radius.indrawan 3 года назад
@@michaelthibault7930 true. i think we should find the sweet spot between these two factors. bright enough to see while keeping the battery last long, because these AAA batteries don't have plenty of juices.
@Mr.T4LLY-0
@Mr.T4LLY-0 3 года назад
Add some defusing media 'opaque plastic' and those heavy lines should disperse?
@mavos1211
@mavos1211 3 года назад
Clive I just had a quick survey from RU-vid basically asking me if I was happy to have your videos suggested to me and if I click on the happy face it gives me a list of reasons why I was happy like “informative” “calming” ect. I find this strange because I have subscribed to your channel, I “like” all your videos and comment on most of them too.
@bigclivedotcom
@bigclivedotcom 3 года назад
I think they just put them up at random. They may also be checking for automated views.
@tncorgi92
@tncorgi92 3 года назад
I get those on random videos too, including channels I already subscribe to.
@weaselbox6746
@weaselbox6746 3 года назад
Just got one on your last video I gave u a 5 stars and calming and informative !
@ChurchOfTheHolyMho
@ChurchOfTheHolyMho 3 года назад
I often get those questions on sport score recaps... "Yes RU-vid, the game recap from August 15, 2019 was earth shattering and should be recommended to everyone in the future." lol Of course, a BigClive video would be 5 stars by default. :)
@RANDALLOLOGY
@RANDALLOLOGY 3 года назад
Question :. If you wire it from USB through the 11 ohm resistor to the batteries like you have it, but go from the switch directly to the battery should make the light not drop in brightness when you unplug the USB. The voltage from the battery is going through a total series of 22 ohms per your drawing where with USB power it only going through 11 ohms to the COB
@eDoc2020
@eDoc2020 3 года назад
That would work but then the batteries might discharge when it's on and plugged in.
@jccooluser
@jccooluser 3 года назад
i did the hack before i called it usb boost as the batteries did 4.5 and usb does 5 , i am kinda lucky i didnt find out what happens if u leave alcaline batteries charging and luckier that the batteries i used were dead an i didnt use anything else just a broken usb cable on the + and - , glad i didnt try it on the fan i had it didnt had a resistor an died after a week of being on continuesly
@Warracto
@Warracto 3 года назад
I had the same caliper for awhile, seems to work very well, but it drains the battery fast even when not in use
@RawTopShot
@RawTopShot 3 года назад
I take the LR44 out after each use now
@frogz
@frogz 3 года назад
@bigclivedotcom i've been recharging alkalines for years on a nimh charger, better brands usually last 3 or 4 or even 5 charges, cheap dollar store brands tend to leak after 1 or 2 but 1 thing i found out the hard way, do NOT try to charge zinc chloride batteries, they tend to pop rather loudly
@dashingdave2665
@dashingdave2665 3 года назад
Same and same, had to clean the crap off both the wall and my trousers after that lesson. Never been game enough to try a disposable lithium though, cant imagine it would end well. I use an Aldi brand smart charger - it doesn't reject too many.
@dsfghzxc6604
@dsfghzxc6604 3 года назад
am i wrong or are the batteries in the diagram drawn wrong? shouldn't they be reverse: the short sides on top long sides bottom?
@truey90s
@truey90s 3 года назад
Have you seen braniac75's new video about plasma globes that emit UV B . Thought you might like to get your hands on one for the channel
@AAAyyyGGG
@AAAyyyGGG 3 года назад
Here it is in case anyone is wondering: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1ppPrYeXoek.html Very interesting!!
@6laster
@6laster 3 года назад
Should of maybe fitted a mini or micro USB port instead of hard wiring the light for retaining the neatness and originality of the light?
@michaelthibault7930
@michaelthibault7930 3 года назад
Skip all that; if you need a dinky light, you almost certainly don't have AC -- hence, the batteries. So, lose the AA(A)s, lop off the handle, wire a USB lead through a string of a few ball-and-socket joints, and use one of the many external supplies on hand to power the thing. The COB's the thing; the rest (save perhaps the magnet) is window-dressing.
@owenhowever1958
@owenhowever1958 2 года назад
perfect for modification with scavenged dispo vape batteries
@MannyJazzcats
@MannyJazzcats 3 года назад
I have those calipers! Pretty good for the price, about 6 pound odd on amazon presumably considerably cheaper on ebay
@Petertronic
@Petertronic 3 года назад
I bought one on ebay for £4 about a year ago. Works well.
@MannyJazzcats
@MannyJazzcats 3 года назад
@@Okurka. glass fibre reinforced plastic of some kind, I think carbon fibre might have been a slightly dodgy description by Clive since they are most definately the same ones, they are indeed light anyway
@Casey_Schmidt
@Casey_Schmidt 3 года назад
A former employer of mine once gave all the employees a holiday gift. It was a flashlight almost identical to the magnetic one shown here. But it was a putrid green instead of a nice black.
@PicaDelphon
@PicaDelphon 3 года назад
Where you get the Caliper..??.. And Hows the Bloody Weather Around Your little Plot of Land..?
@bigclivedotcom
@bigclivedotcom 3 года назад
Caliper from eBay and stormy here as ever. www.ebay.co.uk/itm/133121340215
@caskwith
@caskwith 3 года назад
I've got those calipers. They aren't carbon fibre they are glass reinforced nylon but that's fine because it means they don't conduct electricity. They work well and are ideal for measuring batteries and magnets. I think I paid £3.
@blg53
@blg53 3 года назад
A slight improvement would be to provide the charging via a micro-USB socket rather than lug the cable with you all the time.
@progressivepondkeeping
@progressivepondkeeping 3 года назад
They're not bad for poundland job's , do you know if they still sell them. Thanks
@TheSpotify95
@TheSpotify95 3 года назад
Nice overview and repurposing :) Personally I'd have gone for slightly lower value resistors, to get a bit more light output at the expense of battery life. You can get decent Ni-MH AAAs (up to 900 or even 1000mAh) nowadays, which would still give a good run time. Also, alkalines would work when on battery power, so long as they are not in the fitting when plugged in to the USB. So you could still use disposable batteries if you have loads laying around. Also, the initial current (with no resistor) is pretty high and would likely burn out the LED COB quite quickly, as well as have poor battery life.
@philmerrifield1163
@philmerrifield1163 3 года назад
@bigclivedotcom I do that very thing with EVERY non rechargeable worklight I buy, I use a cheap power bank (from poundland in fact) to turn them into USB rechargeable ones glad I ain't the only one
@tyttuut
@tyttuut 3 года назад
I found a similar COB in a $15 Husky work light. It also seemed to have two sets of LEDs in parallel, both connected to the driver, but only one actually used. Weird. Also, it has two sets of three AAs in parallel, and it draws over 1 amp from each string... yikes.
@Purple431
@Purple431 3 года назад
Take apart the poundland fantastic fan.
@xxrs2009
@xxrs2009 3 года назад
I love a rechargeble worklight with a basic on off switch, no weird modes. The astro pneumatic dimmer switch is also fine, for around 8 euro's I bought a knockoff from aliexpress. It works good, no grey light but 4000K-ish, even got a battery level indicator. It's a bit too big for electronics tho so I've bought a 10x7cm one with the same switch, even got an usb out for the same price. Guess I'm not the only one with too much worklights..
@marcse7en
@marcse7en 3 года назад
The THUMBNAIL made me HUNGRY! I thought it was a FRIED EGG! 😂😂😂 I love eggs, they're my favourite food!
@thewhizard
@thewhizard 3 года назад
Doesn't the Schottky diode allow more revers currant then the silicon? would discharge through charger.
@bigclivedotcom
@bigclivedotcom 3 года назад
Just low current, and only if left plugged into an unplugged charger.
@DavisUMRacingFishing
@DavisUMRacingFishing 3 года назад
something that must be in the workshop
@-yeme-
@-yeme- 3 года назад
"this is why I don't approve of the alkaline rechargers..." wait, what? there are alkaline rechargers, as in commercial products?? that's a terrible idea.
@GreenJimll
@GreenJimll 3 года назад
I used to have a load of Rayovac rechargeable alkaline batteries back in the day when digital cameras used AA batteries. They were actually pretty good compared to the NiCd alternatives back in the day.
@TheNiteNinja19
@TheNiteNinja19 3 года назад
I remember as a kid trying to reverse alkaline batteries to get a tiny bit more charge out of them so I could finish the game I was playing on my gameboy color.
@rambo1152
@rambo1152 3 года назад
It's worse than that, there are alkaline batteries that are intended to be recharged. "Pure Energy" alkerlines. They are favoured by manufacturers wishing to preserve their green credentials. Cadmium is the new mercury don't you know. I've used them and guess what? They leak.
@joshwalker5605
@joshwalker5605 3 года назад
i used them all the time through the 80s and 90s. theyre fine, just put them somewhere that when the batteries burst it drains to somewhere safe.
@eDoc2020
@eDoc2020 3 года назад
I've tried charging alkalines myself and they usually work except leaks are easy. Lately I've put maybe 2 or 3 mA into a string of AAAs I use to power my multimeter and I've only had one minor leak.
@seannot-telling9806
@seannot-telling9806 3 года назад
Clive I have a project that is right up you alley. How about making some Christmas lighting with parts of lights you have picked up over the years and if that is not enough then Pound-Land or if in the USA then the Dollar Store.
@ExStaticBass
@ExStaticBass 3 года назад
I'd prefer to do an 18650 conversation myself. This would've been a good candidate for a cellphone battery or a LiPo cell.
@johnjordan3126
@johnjordan3126 3 года назад
More info on the calipers please. My Harbor Freight set is now crunchy and intermittent, and the Mitutoyos are too precious to be tossed about the bench with any degree of reckless abandon - I feel like I'm handling the Holy Hand Grenade. Non-metalic jaws would be nice for measuring battery packs.
@paulblitz
@paulblitz 3 года назад
I bought a similar set of "Workzone" calipers back in January from Aldi, only £7.99, I'm quite impressed with the build quality for that price.... You can get them on eBay for about 3 quid! (although at that price they seem to be plastic! Pay a bit more for metal ones!)
@horrovac
@horrovac 3 года назад
The biggest drawback of the shitty Chinese calipers is the high quiescent draw on the batteries when not in use. If you don't use them all the time, the batteries would be dead whenever you need them. What would be the point of having Mitutoyos if you're not going to use them? Quality tools can take the abuse. I like shiny new tools as much as anyone, but tools are there to be used. Battle scars have their own appeal.
@emilee172
@emilee172 3 года назад
I have one if the work lites but it is a little bigger and you can stick a 18650 in the handle, the LED is also bigger and allows for the 3.7 -4.2 volts without any limiting
@thewrenchjockey4251
@thewrenchjockey4251 3 года назад
Hey big Clive. I have a larger LED dimable ballast that I cant find a replacement for. If I ship it to you, will you repair, maybe a video and send it back?
@MB-st7be
@MB-st7be 3 года назад
I'd like to see a series on "stuff you can make with poundland electronics'. Other channels do it with craft and decor items, we need an electronics version! "Forget that poundland bike light, make this super bright rechargable bike light!" and so on.
@joshm264
@joshm264 3 года назад
At Harbor Freight (Americans will be familiar with this store), they have these worklights that come free with a purchase of however many dollars, and the COB on it is quite good
@TJWhiteStar
@TJWhiteStar 3 года назад
Great video as always Clive. Great that you give Poundland some love 😂 👍🏻👍🏻👍🏻 they have some great things to cannibalise sometimes for their low prices.
@RawTopShot
@RawTopShot 3 года назад
They really need a dedicated "Clive Isle" at this point.
@TJWhiteStar
@TJWhiteStar 3 года назад
@@RawTopShot definitely with a big sign clearly Stating "As Seen on Big Clive" like you see with the As Seen on TV products 😂 😂 😂
@theskett
@theskett 3 года назад
@@RawTopShot That'll work; The Aisle of Clive, brought to you from the Isle Of Man :-)
@systemtim
@systemtim 3 года назад
have you checked the battery drain on the calipers when they are off? they seem to eat batteries very quickly.
@bigclivedotcom
@bigclivedotcom 3 года назад
20uA continuous, display on or off.
@mrbridger5
@mrbridger5 3 года назад
Maybe worth shoving a 18650 in there? With a TP4056
@paulfinney
@paulfinney 3 года назад
taking the guts out of one of those £1 USB battery packs from Poundland, and putting into this would make it very very useful
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