Building a battery analyzer 

This channel should have milions of views god dang it youtube is just recomending junk with someone fakely restoring something not good videos like this one i freaking love this kind of videos keep it up and im thinking of building this tester as well :)

This is my very first time ever using the "Thanks Button" on RU-vid. And I do it, because I really appreciate your work developing this device and making it available to us. So: THANK YOU!

I am watching all of your videos, chronologically, from the beginning. Giving me so much nostalgia! You are the best electronics channel for me. So honest, so passionate, so authentic. Your stile and humour is unmatched, and your cat is amazing. My favourite videos are the ones in which you go back to basics. Since you have such a huge experience, your takes are always so rich and detailed, nicely explained, nicely drawn on paper, like good old times. I may suggest some cool and useful video ideas: - Video on DIY inductors, ferrite cores types and how to measure/calculate inductors and all the intuition. - Maybe the same with all the types of capacitors, their application, their construction, losses etc. - Video series on a DRSSTC, since you made the SSTC one! With all the experience on resonance circuits you may give the best interpretation of the coupling coefficient, frequency splitting, proper tuning, etc. - Video series on an even more bloody complex QCW DRSSTC! You would be able to simplify it so much. This would be the ultimate dream haha :D Keep it up man, you are a true inspiration.

You are absolutely awesome 😎👍👍👍👍

Massive effort! Most interesting with a lot of information to take in. I appreciate how you explain what components can be used and the danger of using incorrect components. Cheers to the Cat. 😻💯

Your post-apocalyptic style combined with your good explanations makes your videos very charming. Also good to know that beryllium oxide helps in coping with the news!

It takes about one quarter of a kilowatt hour to boil off (completely) a coke can full of water. Given this, when making a dummy load (many years ago) I soldered the load transistors to a coke can and filled the can with water. 😂It gave my co-workers great amusement, but it worked really well. Best to use devices with Tj_max = 175degC though. Of course, I had to use luminimum solder (Multicore "Alusol" - it's fantastic stuff, well worth buying a roll).

You are 5 years too late for me I built one from Scullcom Hobby Electronics channel here on YT. Although I did build your coil tester last year and love it. Works like a charm...

This can not come at a better time than now that I eagerly need an analysizer that will monitor my battery at all time. Thank you my friend!

The schematic description is definitely one of my favorite parts of your uploads. They don't put me to sleep I really appreciate them.

Last year I was inspired by your original design and made my own battery tested that I can also use as an constant current load (in this mode it doesn't turn off when the voltage drops). Mine is tho quite different. On the outside I have a rotary encoder instead of push buttons and my display is only 3 digits. On the inside is even more different. I used and arduino nano and lm358 op-amp. It doesn't have the offset null function but that's mostly okay bacause I feed the voltage of the shunt back to the arduino so I have an accurate measurement even if the current is not set properly. It's especially helpful at low voltages when the taster can't sinc the set current because I am using a darlington and the op-amp can't go to vcc. For the ADC voltage reference I use the built-in 1.1V reference so at full current I still get 9 bits of resolution (0.5V / 1.1V), which I think is plenty because the resolution of the PWM is only 8 bits. Another major difference is a 2nd transistor that I added in series to the collector of the first one, which follows the voltage of the battery and splits it in half between the 2 transistors so the dissipation is shared. I've found a very sensitive MOSFET on AliExpress, it's IRLB3034 (turns on at about 2V), I don't remember if it's specified for DC. I am using it as the 2nd transistor. I haven't used the tester much but looks like it works fine for now.

Amazing. Yesterday I was looking if you already made a video about this because I want to build my own

Neat! The most versatile discharger and on top of it still the prettiest cat!

Great material! Can't wait for the next episode.

I just love your cat! Veritaska and her comments are always excellent! 😸

Very nice! I think I might build this later as it's very nice to be able to measure battery capacity - also for matching cells when using them in a battery pack

I just got my hands on a sodium ion cell, thank you for this, exacly what i needed 👍

love the simplicity

Needs more battery testeeeeeers ❤

Thanks for update this module 👍🏼

Long time I miss your videos so much

You're awesome I'm following you since you're Chanel was 17k 👍

Good job my friend, i follow you since first vids, amazing job! keep it up ! grettings from Mexico !

I've taken a liking to the now quite popular Atorch DL24 electronic load and battery tester. It does everything you need to test the power supply or measure the capacity of virtually any battery. It's a relatively inexpensive toy and easy to upgrade. The software is really unlimited, only the MOSFET it comes with can't make such a P-loss.

My soldering skills are not up to yours and I dont have enough years left to learn so I will create a PCB at sometime. Awesome video as always....cheers.

heyecanlı bir proje olmuş gibi eline sağlık kardeşim böyle şeylere pek gerek kalmamasına rağmen bazı özel şeylere başlangiç olabilme açısından hoş.

I have build these , and its work so fine and great ❤

Day 13 of asking to build a drsstc or a vttc, pls👍 Love your videos

Hi, be careful with these gray thermal pastes. They sometimes contain traces of metal which makes them slightly conductive and might mess up your circuit. I already had problems with it and one of my classmates too 😅

10:05 I really fell asleep and now I just woke up. 😁😁😁

FYI: "This content violates the terms and conditions of Odysee and has been filtered." So I'm watching it here.

This is so nice

I have enjoyed watching your video, nice job! I have two tips for you which will help you increase the accuracy of all 3 measurements of this device. Add 12pF load capacitors to your crystal and either use an opAmp for voltage and current measurement or decrease the impedance of your measuring circuits. Just trust me on these tips and if you want more details have look at application notes AVR127 and AN2648.

Thank you!

Brilliant video 👍🇮🇪😁

Very good and informative as always :)maybe turn the transistor heating side up, and place is underside of the heatsink, maybe it has a bit better heat dissipation since heat moves up.

IXYS (now Littlefuse) has a series of MOSFETS with extended FBSOA for linear applications, such as electronic loads. I did a design with IXTK90N25L2 some while ago, works nicely.

please make the osilloscope too.

It might be a good idea to run it on battery (Ni-Mh or Lead-Acid to avoid fires). In case the power goes out accidentally.

Thanks!

Hello, thanks for the video! Which program do you use for schematic capture? Thank you :)

I love this channel ❤❤ even more salt😂😂

@DiodeGoneWild where did you buy that transparent back box? I wold have been good for a future project, for me. Thank you in advance.

Maybe AD8628/8629? They do not have offset regulation but the offset is quite low (1uV).

Nice.

Mc33171,2,4 are still in production, i think only SMD as most components today. And i still use them, even in commercial designs. Of course not the most fancy opamp today but knowing a part well is handy if development has to go quick compared to working through cataloges and datasheets...

Could you please do an assembly code video?

Thank you for sharing! In your webpage you describe, how to program avr with parallel port programmer. Any tutorial how to do it with USB programmer? Been programming only arduinos so far.

What program do you use to draw schematics?

Благодарим ви!

Thank you. Instead of EN on the display, I would put more like Pow or W or NRG. EN makes think of enable or english. :-)

is it possible to make a comprehensive clip about assembly program and how to compile that to hex and basically how to program Atmega with these!? I do not have anyidea how it is done!

😅 These are so great videos considering the informational and educational value 👍, comedy value is also priceless when you can all the time imagine Roswaal explaining the schematics and electronics behind the design. (inside joke for weebs, let it pass if you don't know it)😄

Please make a video on building a Geiger counter too

Horribly bodged! Just how I like it!

I hope the third version charging battery with same circuit and can you make the code with C language

Hlw I am from India and I saw you many time you use a your diy watt meter can you explain in detail how is your diy watt meter work and how can I make my self because I like diy tools and it's gives good accuracy better than readymade tools

Ďakujem za toto veľmi pekné video zo stavby merača batérií. Páči sa mi tvoj štýl ako vyrábaš svoje výrobky, že často využívaš staršie suroviny čo máš doma a tým im dávaš novú šancu na život. Taktiež si cením (ale to som ti už myslím písal pod iným videom), že si sa nenechal zlákať Arduinom, ale programuješ holé AVR-ká v Assembleri. Ja osobne som s MCU (AT89C2051) urobil iba jeden projekt a to hodiny s digitrónmi ako maturitnú prácu, potom som už bastlil len s tranzistormi, logickými obvodmi TTL 74XX a CMOS 4XXX, prípadne nejaké tie OZ keď je treba a podobne, väčšinu dosiek navrhujem na PC v programe Eagle, navrhujem ich tak, aby sa dali vyrobiť ako jednostranné a potom ich kreslím fixkou (ako jednostranné) a leptám v chloride železitom, ale niektoré DPS vyrábam tiež ako ty brúsením, nepoužívam ale univerzálne plošné spoje, ale dosky so súvislou meďou, vybrúsim ostrovčeky a prepojujem ich zo strany spojov tenkými drôtikmi. Súčiastky osadzujem normálne navrch a dosky vŕtam tou istou vŕtačkou na plošné spoje akou tie dosky aj brúsim. Tvoje videá, najmä tie z výroby niečoho sú pre mňa inšpiratívne a dodávajú mi chuť aj naďalej bastliť.

Valeu!

Simple enough to diy

Best bit 10:10 :)

Hello, is there a specific reason to fix the body of the external crystal to the board with a piece of wire or is it for decoration purposes only?

How can I build the old one?

Have u ever considered using a bjt and nfet in parallel for the pass element. In normal operation the bjt would be active but as the voltage drops the nfet could supplement it. I know it seems a little contrived but if u did have that set up u could use the nfet in short pulses to measure the esr of the batteries. U could also use them with separate batteries. Lik u could have 2 bjt's 2 nfets and 2 small relays and u could do up to 4 batteries at a time with limitations

I don't like the way how P3 is set. In fact, these inputs are intended to (almost) ZERO the offset of that opamp, which is relatively easy to do. As long as it is biased and is controlled by a negative feedback, the voltage between In+ and In- is proportional to the offset. Zero multiplied by some constant is still zero, so if you set the P3 to obtain zero (or almost zero) voltage measured between In+ (3) and In- (2) pins, you have almost no offset on the opamp. Generally speaking, this is the way how the offset should be adjusted, but I don't think this would lead to any good result in this particular case, because (as far as I got it) P3 is intended to introduce some defined offset into that circuit to counteract the finite voltage swing of the PWM output, which introduces nonlinearity especially when the PWM pulse is short (this is downside of simple PWM implementation), leakage of C7 and who knows what else. This is definitely not a great idea due to introducing non linearity into whole system and it's also bad from the long term stability point of view. PC1 is something I definitely don't understand to. I accept that you need to somehow turn that load off. This is done by introducing relatively big positive voltage to inverting input of the opamp, which forces it into the negative saturation, but this could be easily done by PC5. Furthermore, if you share that ON/OFF pin with LED, the LED would feed at least some voltage to the inverting opamp input in the RESET state when GPIOs are in the HiZ state doing at least some protection. This is why sharing that pin with LED makes much more sense to me. The last thing. That clock crystal needs at least some adjustment, which is hard to do. There is no output that would be somehow tight to some GPIO. If you touch the crystal itself, you detune that thing, which means you need to use some near field probe to adjust that frequency, which is always tricky. It would be great idea to introduce something like a adjustment mode, which could be activated by pressing some key when that thing is turned on, just to give something like full scale to the PWM output and 1024Hz divided from the crystal oscillator to some GPIO just to ease adjusting XO frequency. In fact, this is easy to implement and it would help a lot to everyone, who builds this thing.

Hi Diode Can you do a battery capacity test of Lidl's new series of Aerocell batteries? They seem to be no longer as good as they used to be. Thanks

What software do you use to draw your schematics?

❤❤❤❤

Would be nice to have battery tester/dummy load that instead of just burning the energy, could charge another battery or do something useful.

Some time ago i've tried to build this one using jellybean components but it didn't want to work at all. Like opamp tl081 and high power mosfets from computer scrap so i put it in the shelf.

Maybe a dumb question, but why are there small knots on the power supply wire of your old battery analyzer? Is this just a convenient way to shorten the wires, or is it meant to provide some kind of very low value filtering inductor?

Day 15 of asking to build a drsstc or a vttc, pls👍

what change needs to do for 21v battery? 5 series lithium used in many power tools

I don't have money but I can send you some electronic or electrical equipment from America if you want

I have all the components listed. I only need the operational amplifier, the same or similar. My next project. Greetings.

Why 32768 hz crystal? Is it critical? Can't discharge time be measured accurately without it? Let's say with 16Mhz crystal?? Why not reduce the burden on the MOSFET & the size of the heatsink and just add a power resistor as dummy load in place of the fuse? Would you test with LM358 Opamp and IRFZ44N / IRLZ44N MOSFETS? Can we use dedicated voltage comparator ics like LM393 in place of OpAmps?

Should ca3140 good for substitute for opamp

Please explain why the silicone pad is required under the MOSFET, when nothing else is connected to the heatsink?

Start a new series Test alot of transistors and pick some winners from them while classifying them for their usage.

Can we also use instead of 32768Hz crystal 16Hz or 12Hz or something close to it.

I'm only here for your funny accent 😘 Never and will never understand electronics

Restrictions on the operation of MOSFETs in the linear region seems to come as a big rude shock to many. I suppose they thought "second breakdown" was a thing of the bipolar past.

Your website is down: Error 429 - Too Many Requests

😮🙏🏻😊😊

i want a educational video about freescale microcontroller and it's programming interface, they have good reliability than PIC and AVR microcontrollers, i didn't find anything usefull on internet, programming devices uses BDM interface and they are too costly for diy purpose, if there's some diy programmer like USBasp it will be better ! thanks.

Hi diode gone wild, I found similar to MC33171, the TL081, can I use it as substitute for MC33171??

You look like Walter White.

Not an expert. Is it be possible to power this device with buck converter? Also is there another way to program the microcontrollers, it seems the method you’re using is very old to be applied now.

Day 16of asking to build a drsstc or a vttc, pls👍

Day 23 of asking to build a drsstc or a vttc, pls👍

Hi sir please can you upload TV MOTHER BOARD

why not using easyEDA or such for producing your pcbs files and then pcbway for providing your pcb...in this way hundreds of your followers using your files and ordering to pcbway you get the percentage. And if you do that for all your projects your are going to have substantial source of income for the forseeable future.

We know what you look like now lol, I thought you were an Indian.

Why not make something a bit more useful? That is an analyzer capable of both charging and discharging with remote control? Just slap on charging circuit, replace MCU with ESP32 and use OLED display instead of 7 segment display.

Would be very nice if you would switch to english in your source codes. Makes no sense to publish them with comments written in czech. It is rather hard to follow for people who are not that familiar with atmel microcontrollers. I asume, that Czech speakers are good with english anyway, since they know microcontroller ASM. Thanks.

Terus berkarya sir,,indonesia hadir.menanti kunjungannya..bosku.di tempat kami..siap menyambut terimakasih tutorialnya..❤❤ Manfaatkan barang bekas..

All inizio non capivo la batteria in PARALLELO al Mosfet .na poi ho capito che in quel modo si controllava meglio. Evitando picchi e spurie

i only have PIC16F microcontrollers here, will this work? ok, ok, i'll show myself the exit. awesome build!

Day 14 of asking to build a drsstc or a vttc, pls👍

Day 17 of asking to build a drsstc or a vttc, pls👍