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Ptt signal to control accesories

Carlo Piga All Messages By This Member #111528 Hello, Has someone an elegant solution to extract a ptt signal to control accesories on the antenna side of sbitx (power amp, antenna switch, qrm eliminator, etc.). I read about a USB serial adapter where get the RTS signal when transmitting... Has it be implemented at SW level? I can try if necessary... I read also about GPIO signal on the rpi and on Q9 on the board... Has someone solved? Thanks Carlo IS0HLX
HA3HZ All Messages By This Member #111531 Carlo, Gordon KX4Z dealt with the topic, you can find his description here. Make sure the disconnection is correct. -- Gyula HA3HZ
[email protected] All Messages By This Member #111533 The difference of taking TX from pin 2 to 74LS08 (5v) and exiting Q9 (12V)? makes a delay Q10,Q101 and Q9?
Carlo Piga All Messages By This Member #111534 Very interesting but I prefer to avoid soldering on the board... Js8call has a "ptt command" option that call a script when the ptt state change. In the worse I will use a USB serial adapter with some code and get the ptt from RTS. Do you know if sbitx main software has an analogous "ptt command" option, it could be very useful. If it is not present I can only run js8call with accessories... Thanks Carlo toggle quoted message Show quoted text Il 1 Giugno 2024 09:09:00 CEST, HA3HZ <gyula@...> ha scritto: Carlo, Gordon KX4Z dealt with the topic, you can find his description here. Make sure the disconnection is correct.
Jeff Duce All Messages By This Member #111541 开云体育 I have been thinking on this and I have a basic design completed, but I need to think on it some more.? It would require you to solder a single wire to the board, but the rest would use existing headers.? But I don't have an external amp and I'm not sure what the requirement is.? I'm assuming you just want a 12v digital I/O that goes high on PTT.? I was planning on limiting current to ~10mA.? Let me know if that is something that would work for you.?? toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of Carlo Piga <cpiga@...> Sent: Saturday, June 1, 2024 1:17:31 AM To: [email protected] <[email protected]> Subject: Re: [BITX20] Ptt signal to control accesories ? Very interesting but I prefer to avoid soldering on the board... Js8call has a "ptt command" option that call a script when the ptt state change. In the worse I will use a USB serial adapter with some code and get the ptt from RTS. Do you know if sbitx main software has an analogous "ptt command" option, it could be very useful. If it is not present I can only run js8call with accessories... Thanks Carlo Il 1 Giugno 2024 09:09:00 CEST, HA3HZ <gyula@...> ha scritto: Carlo, Gordon KX4Z dealt with the topic, you can find his description here. Make sure the disconnection is correct.
[email protected] All Messages By This Member #111546 In practice, I use a module like the one in the photo with separation on the optocoupler and the command from the Q9 output
[email protected] All Messages By This Member #111547 Consumption 4mA per order

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