DIY touch-activated LED lantern

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This is my new nightlight. This touch-sensitive LED lantern is activated when you place your palm on its top. It is made of wood and paper.
Read my instructable for pictures and more details: www.instructables.com/id/Touc...
Affiliate shopping links:
Blank PCB kit:
s.click.aliexpress.com/e/8mufXBi
Warm white LED strip:
s.click.aliexpress.com/e/byPhiztW
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Опубликовано:

21 июл 2024

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Комментарии : 69

@cellogirl11rw55 5 лет назад

You are an artist! Beautiful job!

@GrandadTinkerer 2 месяца назад

Lovely job Sir!

@Telliria 6 лет назад

Love this build, I will try to make my own.

@RATANKUMARRateria 4 года назад

Excellent workmanship...👍👍

@voidos8490 5 лет назад

Thanks for the cool video man you just gave me an awesome idea for touch lighting in my bedroom.

@krzysztofwaleska 4 месяца назад

I like yourrr ,,rrr'' letterrr in yourrr accent. Grrreat :-) Can't be forrrgoten :-) Nice chip that pcf8883. I didn't knew it. Although can be replaced by 3-4 transistors forming dc amplifier and latch. Also simple circuit. But pcf8883 gives some kind of elegance over discrete one. That aluminium foil will loose contact overt time due to oxidization and electrolytic metal dissimilarity, better to use copper foil or part of tin can and solder.

@treceh 3 года назад

This is gorgeous! I have to try making this, haha.

@seanscon 6 лет назад

how did you make a hole in the jar?

@sachinrathnayake504 3 года назад

3:37, if I want to make it less sensitive, would it be fine to use a lower capacitance?

@mdani76 4 года назад

Fan Tas Tic !!! I will make a lantern like yours... love it!

@petergomez9919 3 года назад

Where do you buy the components? Cause I cant find the exact parts

@Toolboxdiva 6 лет назад

This is so cool looking

@RATANKUMARRateria 4 года назад

Your working is superfine boss...Can I get this circuit readymade with components in the market...?

@ShivamSharma-vq7tl 4 года назад

the idea is exceptionally awesome, but i couldn't help to notice that the light went on even before you touch it... check at 6:07 at 0.25x speed.

@Copeland1211 4 года назад

I noticed that as well here's why: the PCF8883 is a capacitive touch/proximity switch that works through capacitive coupling, so it really only needs your hand to be as close as the sensitivity is set to, according to the capacitor on pin3 :)

@veljaycopalmes506 4 года назад

do you sell this lamp?

@markpanganiban8951 5 лет назад

how about Pcb designing

@pangestudiy7183 3 года назад

Wow kerennn bang😍😍😍 Sngat menginspirasi👍👍 From 🇲🇨

@luisadrianferrecovantes3865 5 лет назад

It would be possible to replace the PCF883 with a NE555 on bistable mode?

@LeftyMaker 5 лет назад

It depends on what you want to achieve. The PCF8883 senses changes in capacitance to detect your palm. This triggers the switch. With an NE555, you'll have to use actual, physical buttons.

@nerdy3740 5 лет назад

wow Thanks!

@ideaguyinks 2 года назад

Is it possible to make a touch-sensitive LED circuit using a flat watch battery? I need something that can run on a flat watch battery because it will be used very infrequently and needs to be as small as possible.

@LeftyMaker 2 года назад

Not impossible, but possibly impractical and inefficient. The voltage won't be enough, so you'll need a booster or two batteries in series

@aynizrh 6 лет назад

Is it fine if I'm not using the exact transistor as you used ? Will it still work ?

@LeftyMaker 6 лет назад

Yes, you can use a different transistor, as long as it can handle the current of the LEDs

@sachinrathnayake504 4 года назад

hi was just wondering if any programing was needed for the chip

@LeftyMaker 4 года назад

Hey, no programming needed!

@maanrajpoot150 2 года назад

How to made a friendships lamps

@trioabs2166 3 года назад

Can any one please give me a link for the components I’m from the uk

@LeftyMaker 3 года назад

Hi. Unfortunately, the 8883 chip is listed as discontinued at Farnell. I've been thinking of making a v2.0 of the lamp with newer parts but I just don't have the time. They still have it at AliExpress though m.aliexpress.com/item/4000358502683.html

@tomb3526 4 года назад

Very nice, I will try if I can find the part - is there an alternative to the PCF8883? I'm unable to find the chip on aliexpress and you've stated below that the TTP223 won't work with this design.

@LeftyMaker 4 года назад

Hey Tom. I *guess* the TTP223 might work if you're okay with leaving it exposed. Or maybe it will still work if it is covered by a thin piece of veneer. But again, I've never used that module.

@tomb3526 4 года назад

@@LeftyMaker I would like to make as in the video, I will search for another chip....

@sachinrathnayake504 4 года назад

hi another question what power supply are you using

@LeftyMaker 4 года назад

Just a regular 12v 1a power supply. It really depends on how many LEDs you want to drive

@landlockedviking 5 лет назад

Very cool, I need to make something like this but battery powered!

@LeftyMaker 5 лет назад

Thanks! I've been thinking the same too since I saw the Casper Glow light.

@sachinrathnayake504 3 года назад

@@LeftyMaker couldn't we just use a 9v battery to power this?

@davishabelbonibangari6738 5 лет назад

Can multiple part of the lamp be touch sensitive (as switch) ?? I'm doing a lamp for my Design & Tech Project, and this touch sensitive switch idea is very interesting . That's why I'm asking .😄

@LeftyMaker 5 лет назад

Yes, but be careful. Having more touch-sensitive areas means using more aluminum foil, which increases the area and capacitance of the sensing plate you're essentially making. This could make the switch too sensitive and activate from stuff like the static electricity in your clothes. You can try using much thinner wood over the foil and a smaller value for the capacitor that sets the circuit's sensitivity. Or you can use multiple 8883 chips and an Arduino.

@davishabelbonibangari6738 5 лет назад

LeftyMaker ok, thank you very much 😄

@williamstorey5024 6 лет назад

Maybe I missed something. But how does the touch transfer through the wood. Wood is not conductive ?

@LeftyMaker 6 лет назад

The circuit is very, very sensitive. Practically, it detects the presence of your palm, not touch, and it can sense it from a distance, even though the wood.

@tilakdp 5 лет назад

Woah.. that is nice. Its almost like an RF touch

@flytingtomato13 4 года назад

Do we need to do coding??

@LeftyMaker 4 года назад

Nope

@pannagaballal5018 5 лет назад

What is the theory / principle behind it??

@sdKA_garia 6 лет назад

do more please and can you write the components please

@LeftyMaker 6 лет назад

Hey Ahmed! All the component numbers and values are at 3:20 into the video. The power supply is just an ordinary wall brick. Do let me know if there's anything unclear.

@trioabs2166 3 года назад

Hi I can see a resistor on the real life circuit but it’s not on the circuit diagram, does that mean that I do not need it?

@LeftyMaker 3 года назад

Hi, good observation. I wasn't sure myself at the time, but I've since learned that a resistor to the gate is good having. There is a small capacitance the mosfet has. If you have something like an Arduino connected to the gate, having no resistor may damage the chip because for a fraction of a second, the chip will be seeing very little resistance, therefore passing too much current. Hope this helps.

@trioabs2166 3 года назад

LeftyMaker does that mean that I wouldn’t need one if I’m using a direct 12v from a battery pack. If I do what is the resistance

@LeftyMaker 3 года назад

@@trioabs2166 Can you give me more details? What exactly are you making?

@trioabs2166 3 года назад

LeftyMaker I’m making a touch sensitive lamp powered by 8 AA batteries

@LeftyMaker 3 года назад

What chip are you using to detect the touch? I'm asking because the pcf8883 I used works with 9V maximum. Other than that, the mosfet should be able to handle 12V, I think.

@user-zq9wp6lf3o 6 лет назад

I don’t understand how it works because the Aluminium foil is glued to wood (non consecutive) Besides that what is the ic part name And great video. I enjoyed

@LeftyMaker 6 лет назад

It is a PCF8883, and it makes a circuit so sensitive that it will detect your hand even from a distance and through the wood. Cool, right?

@user-zq9wp6lf3o 6 лет назад

LeftyMaker yes very cool, as you mentioned that the capacitor it a sensitivity indicator so if I’ll use a variable capacitor I’ll be able to change the sensitivity but the variable capacity should be in which range of values

@LeftyMaker 6 лет назад

www.nxp.com/docs/en/data-sheet/PCF8883.pdf This is the datasheet for the chip. It will probably answer a lot of your questions. The value for the sensitivity cap should be between 90nF and 2500nF. 470nF is the recommended value. Not sure how well the variable capacitor will perform, but do let us know if it works well! :)

@asmarkhan8102 6 лет назад

I have tested this but it not working with the wood... I mean the touch part.. Please help I used 5 100kpf capacitor in series

@user-zq9wp6lf3o 6 лет назад

Asmar Khan try to change the capacitor value to what the Leftymaker told me at the comments up And check if the circuit works on a breadboard and then try it with the wood case