[arm-allstar] arm-allstar Digest, Vol 18, Issue 3

Sat Nov 7 12:00:51 EST 2015

Barry,

 Unless I am missing something here isn't your goal to have the RPi2's PTT turn on the fan. Connected as a repeater controller the PTT would be active whenever the repeater was transmitting.  In that case why not use the PTT line to control the fan (and the repeater PTT) The line goes low on TX.  Use a simple keying circuit to control the fan from that line. A couple of transistors, or a transistor and a FET, or a transistor and a solid state relay is all you would need. 

73 Doug
WA3DSP
http://www.crompton.com/hamradio

Date: Sat, 7 Nov 2015 15:37:48 +0000
From: bjbuelow at yahoo.com
To: arm-allstar at hamvoip.org
Subject: Re: [arm-allstar] arm-allstar Digest, Vol 18, Issue 3

>OK,
 I got a cable made this week and the repeater is now being controlled 
by the Pi. I hooked up GPIO 4 on the URI to be my ctcss enable logic 
line.  > >I
 played around with the event management and finally succeeded in 
getting gpio4 to turn on and off with RPT_RXKEYED. An interesting 
exercise but it >didn’t really accomplish what I was after, since of 
course I can’t hear the node respond to commands with that enabled :😊  This is watching an event in asterisk and doing something external.Is there a reverse function?  Can I write a program and have the external event SET a parameter in asterisk?
Barry w0iy

     On Friday, November 6, 2015 8:50 PM, "arm-allstar-request at hamvoip.org" <arm-allstar-request at hamvoip.org> wrote:     

----- Forwarded Message -----Send arm-allstar mailing list submissions to    arm-allstar at hamvoip.orgTo subscribe or unsubscribe via the World Wide Web, visit    http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstaror, via email, send a message with subject or body 'help' to    arm-allstar-request at hamvoip.orgYou can reach the person managing the list at    arm-allstar-owner at hamvoip.orgWhen replying, please edit your Subject line so it is more specificthan "Re: Contents of arm-allstar digest..."Today's Topics:   1. Re: GPIO control of fan (Jay Freeman)   2. Re: GPIO control of fan (Doug Crompton)   3. Re: GPIO control of fan (Jay Freeman)OK, I got a cable made this week and the repeater is now being controlled by the Pi. I hooked up GPIO 4 on the URI to be my ctcss enable logic line.   I played around with the event management and finally succeeded in getting gpio4 to turn on and off with RPT_RXKEYED. An interesting exercise but it didn’t really accomplish what I was after, since of course I can’t hear the node respond to commands with that enabled :😊  Is there possibly another variable I can check to cause ctcss to drop out sometime during the repeater hangtime?  Thanks,  Jay – WT9S  Sent from Mail for Windows 10    From: Doug CromptonSent: Thursday, October 29, 2015 1:31 PMTo: ARM AllstarSubject: Re: [arm-allstar] GPIO control of fan    Jay, In many cases you can just leave the fan run at reduced speed all the time but if you want to control it simply why not just use the PTT line to turn it on. That would be very easy. The PTT (in most cases) goes to ground when active and it would be high not active. The only thing you have to be careful of if you connect the fan directly to the PTT line is the fan voltage should not be more than the open high state of the radios PTT. You could also build a simple keying circuit to start the fan when the PTT went low and eliminate that problem. Most people get way to carried away with fan circuits but if you want to get fancy here is an example -  http://latinovoip.net/allstar-and-the-gpio-fan-script-for-dmk-engineering-uri/73 DougWA3DSPhttp://www.crompton.com/hamradioTo: arm-allstar at hamvoip.orgFrom: wt9s at me.comDate: Thu, 29 Oct 2015 10:18:55 -0700Subject: [arm-allstar] GPIO control of fanHi folks, I’ve been running my repeater here with an Arcom RC210 controller for years. I have the repeater, an IRLP computer, and the Allstar node (now on a Pi) each connected to a port on the controller. The controller currently switches on a fan for 60 seconds whenever PTT goes active. I am thinking of ditching the IRLP and the Arcom and running my repeater with the Allstar node as the controller. I’m looking for some pointers on how to control the fan with either the URI GPIO, or the USB GPIO described in the How-Tos. I guess using the URI would be simpler. Thanks, Jay – WT9S Sent from Mail for Windows 10_______________________________________________ arm-allstar mailing list arm-allstar at hamvoip.org http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the BBB and RPi2 web page - http://hamvoip.org    

Jay, Did you look at this link -http://latinovoip.net/allstar-and-the-gpio-fan-script-for-dmk-engineering-uri/I thought I had sent that before. Lots of good info there as well as other links.73 DougWA3DSPhttp://www.crompton.com/hamradioTo: doug at crompton.com; arm-allstar at hamvoip.orgFrom: wt9s at me.comSubject: RE: [arm-allstar] GPIO control of fanDate: Fri, 6 Nov 2015 14:35:59 -0700OK, I got a cable made this week and the repeater is now being controlled by the Pi. I hooked up GPIO 4 on the URI to be my ctcss enable logic line.  I played around with the event management and finally succeeded in getting gpio4 to turn on and off with RPT_RXKEYED. An interesting exercise but it didn’t really accomplish what I was after, since of course I can’t hear the node respond to commands with that enabled : Is there possibly another variable I can check to cause ctcss to drop out sometime during the repeater hangtime? Thanks, Jay – WT9S Sent from Mail for Windows 10  From: Doug CromptonSent: Thursday, October 29, 2015 1:31 PMTo: ARM AllstarSubject: Re: [arm-allstar] GPIO control of fan  Jay, In many cases you can just leave the fan run at reduced speed all the time but if you want to control it simply why not just use the PTT line to turn it on. That would be very easy. The PTT (in most cases) goes to ground when active and it would be high not active. The only thing you have to be careful of if you connect the fan directly to the PTT line is the fan voltage should not be more than the open high state of the radios PTT. You could also build a simple keying circuit to start the fan when the PTT went low and eliminate that problem. Most people get way to carried away with fan circuits but if you want to get fancy here is an example -  http://latinovoip.net/allstar-and-the-gpio-fan-script-for-dmk-engineering-uri/73 DougWA3DSPhttp://www.crompton.com/hamradioTo: arm-allstar at hamvoip.orgFrom: wt9s at me.comDate: Thu, 29 Oct 2015 10:18:55 -0700Subject: [arm-allstar] GPIO control of fanHi folks, I’ve been running my repeater here with an Arcom RC210 controller for years. I have the repeater, an IRLP computer, and the Allstar node (now on a Pi) each connected to a port on the controller. The controller currently switches on a fan for 60 seconds whenever PTT goes active. I am thinking of ditching the IRLP and the Arcom and running my repeater with the Allstar node as the controller. I’m looking for some pointers on how to control the fan with either the URI GPIO, or the USB GPIO described in the How-Tos. I guess using the URI would be simpler. Thanks, Jay – WT9S Sent from Mail for Windows 10_______________________________________________ arm-allstar mailing list arm-allstar at hamvoip.org http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the BBB and RPi2 web page - http://hamvoip.org   		 	   		  
Yes, I have looked at it, but I haven’t gotten around to fan control yet. I have one blowing full time for now.  Sent from Mail for Windows 10    From: Doug CromptonSent: Friday, November 6, 2015 3:46 PMTo: Jay Freeman;ARM AllstarSubject: RE: [arm-allstar] GPIO control of fan    Jay, Did you look at this link -http://latinovoip.net/allstar-and-the-gpio-fan-script-for-dmk-engineering-uri/I thought I had sent that before. Lots of good info there as well as other links.73 DougWA3DSPhttp://www.crompton.com/hamradioTo: doug at crompton.com; arm-allstar at hamvoip.orgFrom: wt9s at me.comSubject: RE: [arm-allstar] GPIO control of fanDate: Fri, 6 Nov 2015 14:35:59 -0700OK, I got a cable made this week and the repeater is now being controlled by the Pi. I hooked up GPIO 4 on the URI to be my ctcss enable logic line.  I played around with the event management and finally succeeded in getting gpio4 to turn on and off with RPT_RXKEYED. An interesting exercise but it didn’t really accomplish what I was after, since of course I can’t hear the node respond to commands with that enabled : Is there possibly another variable I can check to cause ctcss to drop out sometime during the repeater hangtime? Thanks, Jay – WT9S Sent from Mail for Windows 10  From: Doug CromptonSent: Thursday, October 29, 2015 1:31 PMTo: ARM AllstarSubject: Re: [arm-allstar] GPIO control of fan  Jay, In many cases you can just leave the fan run at reduced speed all the time but if you want to control it simply why not just use the PTT line to turn it on. That would be very easy. The PTT (in most cases) goes to ground when active and it would be high not active. The only thing you have to be careful of if you connect the fan directly to the PTT line is the fan voltage should not be more than the open high state of the radios PTT. You could also build a simple keying circuit to start the fan when the PTT went low and eliminate that problem. Most people get way to carried away with fan circuits but if you want to get fancy here is an example -  http://latinovoip.net/allstar-and-the-gpio-fan-script-for-dmk-engineering-uri/73 DougWA3DSPhttp://www.crompton.com/hamradioTo: arm-allstar at hamvoip.orgFrom: wt9s at me.comDate: Thu, 29 Oct 2015 10:18:55 -0700Subject: [arm-allstar] GPIO control of fanHi folks, I’ve been running my repeater here with an Arcom RC210 controller for years. I have the repeater, an IRLP computer, and the Allstar node (now on a Pi) each connected to a port on the controller. The controller currently switches on a fan for 60 seconds whenever PTT goes active. I am thinking of ditching the IRLP and the Arcom and running my repeater with the Allstar node as the controller. I’m looking for some pointers on how to control the fan with either the URI GPIO, or the USB GPIO described in the How-Tos. I guess using the URI would be simpler. Thanks, Jay – WT9S Sent from Mail for Windows 10_______________________________________________ arm-allstar mailing list arm-allstar at hamvoip.org http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the BBB and RPi2 web page - http://hamvoip.org      _______________________________________________arm-allstar mailing listarm-allstar at hamvoip.orghttp://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar     
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