10-12-2021, 08:21 PM
Hi
I don't know if you have overcome this problem as you haven't given any updates, but there maybe another cause of this problem.
If it doesn't help you, it may help others in the future, so I thought I's mention it here.
You are using different power supplies for your outputs (Ports/LEDs). Have you 'commoned' all the grounds?
Each power supply ( e.g. 5v is referenced to ground - Potential Difference - not necessarily 5v to 0volts, it could be 6v to 1v etc.).
It is normal practice in electronics to ensure that all parts of a circuit are linked to the same ground, this is more so when it comes to connecting other circuit boards together. What that means is that every voltage in the circuits are referenced to the same ground (hope that makes sense!)
Anyway. Hope your display goes well
REgards
Sandy
Your symptoms really indicate the problem is due to my first response, as normally I would expect your pixels to be very erratic and possibly freeze if it was down to your grounds being at different potentials.
I don't know if you have overcome this problem as you haven't given any updates, but there maybe another cause of this problem.
If it doesn't help you, it may help others in the future, so I thought I's mention it here.
You are using different power supplies for your outputs (Ports/LEDs). Have you 'commoned' all the grounds?
Each power supply ( e.g. 5v is referenced to ground - Potential Difference - not necessarily 5v to 0volts, it could be 6v to 1v etc.).
It is normal practice in electronics to ensure that all parts of a circuit are linked to the same ground, this is more so when it comes to connecting other circuit boards together. What that means is that every voltage in the circuits are referenced to the same ground (hope that makes sense!)
Anyway. Hope your display goes well
REgards
Sandy
Your symptoms really indicate the problem is due to my first response, as normally I would expect your pixels to be very erratic and possibly freeze if it was down to your grounds being at different potentials.