Re: PiRLP Suddenly Not Working

David Cameron - IRLP
 

Something is dragging either the 5v or 3.3v rail on the pi towards ground. 

Are you sure you are orienting the red line on the gpio cable onto the pi correctly?

Also have you checked the gpio db25 connector for broken wires?

When the pi is running, check the voltage to the 3.3v jumper. 

Dave Cameron 


-------- Original message --------
From: Russ Woodman <k5tux@...>
Date: 2/12/20 4:15 AM (GMT-08:00)
To: IRLP@irlp.groups.io
Subject: [IRLP] PiRLP Suddenly Not Working

Hope someone can help me with this. Have an IRLP board pre-modded to run on 3.3v coming off a Raspberry Pi 2 (wired only). Finally got it hooked up and working earlier but after firing it up a second time, Pi will not boot with the PiRLP board connected. Disconnect ribbon cable, Pi boots fine. Re-connect, nothing. Disconnected 3.3v jumper on PiRLP board and Pi boots fine, presumably because it is not getting power. Ribbon cables are connected correctly and this was working (one time) before bringing it home to power on again. Any help would be appreciated.

73 de Russ, K5TUX
Linux in the Ham Shack
https://lhspodcast.info

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