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Portsdown 4 band decoder board ptt
Posted: Mon May 10, 2021 7:22 am
by M0dsr
I have just bit and fitted the 4 band decoder board but it has a issue.
All the band switching works fine and switches as should, but the ptt line does not switch I've tested all the way back to pin 40 from decoder board trough breakout board so I know connections are good.
Does the ptt line need to be set up in the software? Or has anyone got any ideas.
Thanks
Re: Portsdown 4 band decoder board ptt
Posted: Mon May 10, 2021 7:45 am
by G8GKQ
Hi
Does pin 40 go high when you select TX? Remember you have to wait 15 seconds in Lime and Pluto modes to allow for the calibration spike to finish.
Dave
Re: Portsdown 4 band decoder board ptt
Posted: Mon May 10, 2021 8:37 am
by M0dsr
I am using a datv express card and I get no voltage on the pin 40
Re: Portsdown 4 band decoder board ptt
Posted: Mon May 10, 2021 11:18 am
by G8GKQ
OK
The PTT signal for the DATV Express card has traditionally been presented on the DATV Express GPIO Connector, not the Raspberry Pi pin 40.
I'm looking at ways to enable the PTT on RPi GPIO pin 40.
Please confirm that it is a Portsdown 4 and you are controlling it from the touchscreen?
Dave, G8GKQ
Re: Portsdown 4 band decoder board ptt
Posted: Mon May 10, 2021 7:33 pm
by M0dsr
Hi Dave
Yes controlling from portsdown 4 touch screen just plugged in my pluto and everything works as should so as you say ill have to use the datv express card for ptt.
Thank you for your help