First I want to say that my knowledge about electricity and physics is on 8th grade level maybe. During this lock down I've got an idea - add light in my backpack and in the same time charge my phone. Currently I have power bank ANKER PowerCore II 10000 with the following specifications
Input: 5V⎓2A, 9V⎓2A (Compatible with Quick Charge / AFC / PowerIQ 2.0) Output: 5V⎓3A, 9V⎓2A, 12V⎓1.5A (PowerIQ 2.0)
I bought a usb cable, cut it and connect it(black-black red-red, but also tried black-red) to led strip lights (cut again the strip and used 4 diods) with the following specifications:
Power - 14.4Watt/m 12 V DC 400mA
but the LED didn't light up. I checked the V/A from the battery and found out that it works on the 5V, so maybe this was the case. From here I see two action points - add a boost converter or buy led module that works on 5V if there's such (way more simpler) I have few questions, maybe really easy ones, but I don't know what I don't know, so it's really hard to me to find information and ideas:
- Is it possible to charge a phone and power up few led lights from one battery and if yes, how can I achieve that?
- Any ideas for a switch that triggers the led light when I open the bag and turn them off when I close it?
- Is it possible to add a small switch to make it permanent stop?
- Is it possible to make the light turn off after certain time when the bag is open, so it doesn't drain the battery or this includes something like arduino? (i prefer to keep it simple and not invest too much)