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$5 IoT Pill Bottle
Mine still works.
It is a mac.I don't know how much current you can draw, but it is enought to power the usb drive and the inverter circuit.
Me neither, I added all the extra power supply stuff like the zener and the cap and diodes and hoped that it didn't go POP!
Cool!Il give this a try...
The Joule Blinker
Yeah, i kinda forgot about that. :(Yes you can, just solder the 5v, Gnd, D+, D- lines to to the usb drive.If i do it, ill add another step.
If I find a usb drive with one of those blinking lights i could hook it up to blink the neon...........
Neon Stick (USB Neon Inverter)
Neon Stick (USB Neon Inverter)View Instructable »
Solar Powered WiFi Weather Station
Safe Capacitor Discharge Tool
Laser Box Music Laser Light Show
Password Manager, Typer, Macro, Payload ... All in ONE!
ionization chamber made of aluminum can
Pocket Arduino kit.
9V battery case for projects
uhm... uhmm.... .... .. ....suspense?
Ultimately you can just use a 9v Battery and a resistor....
I did know about the LM317 as a constant current source but I did not happen to have any laying around and wanted an instant solution, no waiting for shipping.....I do agree that that would make a good led tester but if you only have basic parts then I think this is the closest you can get.
IoT Pill Bottle
Battery Hand Warmer In Sweet Box
IoT Development With Mobile Directly
Tea light cup warmer
I tried measuring the current but accidentally blew my 200ma multimeter fuse.....I did not have proper resistors and so I played around until I got something decent. The current changes a bit with voltage it goes from 10-20mA.If you want a more accurate current then you can calculate a resistor value and use a slightly modified circuit...
You cant see it in the photos but my power supply amp meter keeps switching to 0.001A to 0.002A in the video
Yeah had some fun dancing
Luv the dancing!
Best mini audio amplifier with TDA2822
TimeFrame - A time portal to put on your desk.
Golf Ball Puzzle
LED Tester (20ma Constant C...View Instructable »
I pluged in my led and it went POP!
Working Sonic Screwdriver - Version 3.0
Sonic Screwdriver 2.0
I just had an idea....You could add a 2nd jack connected straight to the buzzer...Then you play the sonic sounds on your mp3/laptop and it sounds it....I guess it would not be portable anymore..... (facepalm)
how to make a simple sonic screwdriver
Cool!Mini Sonic Screwdriver!Might give ti a try if i find charged batteries.....
Lego Mini Sonic Screwdriver
Doctor Who TARDIS Laser Cut Money Box
Doctor Who Tardis Sneakers
Doctor Who Gallifreyan Clock
DIY functional Sonic Screwdriver
Metal Doctor Who Sonic Screwdriver with Arduino
PasswordKeeper on Aruino Pro Micro or why keep it simple when elaborate way exists!
LM386 tube amp [homage]
Small solar rechargeable led flash light with no solar panel/cell. (uses the led to charge!)
Make a Professional OTG Cable From Scratch!
Mini Speaker Tester using Cheap Chip (Unique sound!)
Neon Goofy Lite
LOL. I tried your apple script prank on one of my friends, he had no idea was was going on...
Making a Multiboot USB drive (All-In-One).
Cool!I looked at the thumbnail and thought it was necklace sized, with SMD leds, XD
DIY Parts and Crafts Infinity Mirror
Electromagnetic levitation device
Simple Tesla Coil
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