michael_l wrote:Well, I guess to me it is not clear what 'usb to work properly" means. But that's just me..
I agree with you, it is not clear, so i changed the wiki to this if @Roger agree
Code: Select all
The USB standard require a 1.5k pullup resistor on D+, but this board is known to have a wrong value (R10 on the board). It ships with either a 10K resistor or a 4.7k resistor, but it should be replaced with a 1.5k resistor, or put an appropriate resistor value (e.g 1.8k) in between PA12 and 3.3V. It is also true that most of the board will also work with the wrong resistance, so it always pays to first try the smooth operation without changing anything.