Reply 360 of 381, by SmooBandit
matze79 wrote on 2020-11-25, 14:54:
This is just ISP Programming Header, there should be none onboard.
Don`t be confused.
Ah OK, thanks.
The D1-D3 red yellow and green LEDs? I would guess they are red = power, green = data from mouse, yellow = wheel presence maybe?
Also, this may be of interest for anybody (like me) who does not have a USB power source near the vintage PC. I have been running the board off a standard battery bank, while using a USB Safety Tester to monitor power usage. It is very low. I am using a new and cheap £6 optical mouse, and the power draw from the battery is very low. It is averaging 42mAh/hour. (That sounds like a very stupid unit, but I have run it for 7 hours, and it has used about 300mAh). It generally hovers about 5.09v at 0.03-0.05A. Of course this is a cheap usb tester so those figures are not going to 100% accurate. Still, I have no doubt that I can run this for a couple of days easy on a 5200mAh battery. I will test and report.
I'll have to get some kind of Frankenstein Molex -> USB A -> USB MiniB converter, and then I'll be able to power it off the PSU, but in the interim, a battery bank is going to do nicely given the very low power draw.