Prea,
When I took my QY100 out of it's box for the first time after being there for decades, I realized the lighting problem too. That's why we briefly talked about it in the QY700 forum.
I went out and took notes on all current available in the QY ports, and ended up with a non invasive method of a light for a QY70 and QY100:
1) In the "to host" port, between pins 4 (GND) and 8 (RxD+) you get 3.61V and 107.3mA, that's 383 mW!
? ?That is enough power to light 20 conventional LEDs!
2) Have you seen a USB gooseneck lamp? well, we can built one but instead of USB, an 8 pin mini din.
? ?The 8 pin mini din jack is $1 USD or less. The mini din jack has enough strength to hold a gooseneck lamp.
3) Many USB lamps can be canibalized to remove the lamp and neck section.
4) USB lamps are set for 5V 500mA, but depending on the USB lamp we could see internal resistors for that voltage in the lamp section.
? ?We could fit/change the lamp casing board with a 3 Ohms 50mW resistor, and that would be enough to support up to 20 parallel LEDs in the lamp
? ?(assuming they are standard). Or if they are not standard, built a little circuit tablet with the LEDs and the resistor.
What do you think?
