LowPowerLab Forum

Hardware support => ATXRaspi => Topic started by: kwalkerk on March 19, 2017, 11:00:44 AM

Title: Sound coming from Raspberry Pi
Post by: kwalkerk on March 19, 2017, 11:00:44 AM
When I power my raspi from the ATX, I get background noise from the headphone jack.  Since my project converts the analog signals to digital and runs servos based upon the conversion, this causes havoc with my servos.

Any suggestions?
Title: Re: Sound coming from Raspberry Pi
Post by: Felix on March 19, 2017, 05:13:05 PM
And it doesn't do that when you power your Pi with the same supply but without the ATXRaspi in between?
Title: Re: Sound coming from Raspberry Pi
Post by: kwalkerk on March 19, 2017, 10:04:26 PM
No it does not.  I've tried it with a few different power supplies as well.  Same result.
Title: Re: Sound coming from Raspberry Pi
Post by: Felix on March 20, 2017, 04:43:16 PM
Well that's a first!

What kind of wires are you using? Any chance you could try beefy short wiring if not already? Possibly soldered rather than jumpered?
A photo of the setup?
Title: Re: Sound coming from Raspberry Pi
Post by: kwalkerk on March 22, 2017, 04:43:26 PM
I'm using jumpers.  I'll try to switch to beefier, shorter wires and solder them in place to see if that makes a difference.

It will be a couple of days before I can get back to this project.  Prepping for a triathlon on Saturday :)
Title: Re: Sound coming from Raspberry Pi
Post by: Felix on March 23, 2017, 09:40:41 AM
I'm interested to find out where that noise is coming from, I'd like to help in whatever way. Let me know what you find.