Tell us about yourself!
Try asking on a construction/building kind of DIY forum.
Why only four channels? The UNO has 26 IO pins, right? I have a PC keyboard I'd like to add two switches to so I want to see what positions in the matrix are not occupied and I was hoping I could use an Arduino to do that. The keyboard matrix consists of 16 rows and 8 columns (or vice versa) so I think I need a 24-channel analyzer to make that as easy as possible to find out which spaces in the matrix are vacant. I have no idea what I'm doing!
Given that it isn't for long-term use, wouldn't halogen lamps be more cost-effective? You can get 10 20W halogen lamps (equivalent to ~5W LEDs) delivered off AliExpress for just £0.91 (a little over a dollar, I guess).It would need more current so maybe a capacitor to charge between flashes?
Turn a Broken Laptop Screen Into a Portable Light Table for Drawing
I got about 15 free laptop screens of different sizes via Freecycle or Freegle in various states of disassembly and I've extracted the CCFLs from all of them. I'm hoping to assemble them all into a particularly bright light. I also have one from a broken scanner.
A (very) Simple LCD Backlight Fix
I think no tint; just silver mirror film with as high a visible light transmission (VLT) as possible. I'd rather use plain glass since it's hard to get high VLT mirror film. It looks like the person who wrote this instructable has a pretty low VLT film and that reduces the light that gets to the camera. I guess that's ideal for shooting in full daylight though. For indoors use, I'd suggest trying the glass on its own first.
I think no tint; just silver mirror film with as high a visible light transmission (VLT) as possible. I'd rather use clear glass or plastic since it's hard to get high VLT mirror film. There person who wrote this instructable doesn't seem to care about the low VLT and how much they're reducing the light that gets to the camera. I guess that's ideal for shooting in full daylight though
I read that silicone sealant cures by reacting with water coming from the air so if you put desiccant in the zip-lock bag, that should also reduce the rate at which it cures, if not stop it from curing altogether.
Why is the Arduino required? Can't the ESP8266 handle those sensors just as well on its own?
What is code 201 cocoa powder?
Build LED Glow Tubing