Portsdown Shut Down Button

Discussion about this major DATV Project. See also https://wiki.batc.org.uk/The_Portsdown_Transmitter
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dc1op
Posts: 7
Joined: Sat Jul 27, 2019 3:35 pm

Portsdown Shut Down Button

Post by dc1op » Mon Apr 20, 2020 8:15 am

Here comes a question to the community: Am using a rpi 3B+ and a 3.5" JOY-IT touch display, which all works fine. Now I wish to connect the
Portsdown shut down button (using rpi pins 13,15, GND) to the devices.

As it looks, the display is also using these pins. -> Can the shut down button arrangement (LED+pushbutton) be connected in parallel to the display?

Thanks for info, 73, Hub

G8GKQ
Site Admin
Posts: 1533
Joined: Sun Mar 22, 2009 1:21 pm

Re: Portsdown Shut Down Button

Post by G8GKQ » Mon Apr 20, 2020 11:34 am

Hi Hub

I very much doubt it. These pins were chosen because they were not used by the recommended Waveshare display. Suggest you stick with using the touchscreen shutdown on Menu 2.

Dave

radiogareth
Posts: 452
Joined: Wed Jan 06, 2016 9:46 am

Re: Portsdown Shut Down Button

Post by radiogareth » Mon Apr 20, 2020 2:08 pm

I used an eBay touchscreen and wired up the shutdown button as per the wiki (I think, it was 18 months ago.....). Works fine, with an LED too.
Its a handy option to have if you need a really 'quick as possible' re-boot (like to initialise something else I just plugged in.....)..
Gareth

dc1op
Posts: 7
Joined: Sat Jul 27, 2019 3:35 pm

Re: Portsdown Shut Down Button

Post by dc1op » Tue May 05, 2020 7:33 pm

Hello,

I had been out on the road therefore the late answer: firstly thanks for your hints, secondly: I checked pin 13 on the Joy-IT Display and it appeared not to be connected. Next I connected a LP LED: is working.
I find it usefull to be able to see when the Raspi halted to safely shut down the power supply.

73, Hub

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