TTGO board with audio out

Other Hardware Audio
1

Hi,

Newbie here. Got a TTGO board with a web audio player. Everything works great when connect to USB power from my Imac. When i power the TTGo board from and 220v to usb brick i get a lot of low noise on the speaker. Why is that and how can i fix it?

Thanks!

2

It could be interference cause by a noisy power brick.

You could try a different one, look at the supply voltage with a scope,
or power the module from a battery, at least for a test.

3

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.