[arm-allstar] Fan control via GPIO and control circuit you can get from Amazon

[James R. Pilgram]

Amazon sells them for about $9 and you can get them in a couple days.  On the  Motorola CDM series radios I wedge the temperature sensor in the fins under the finals with some heat transfer paste and throw some RTV over it to hold in the heat so the fan doesn't falsely cool it. The fan shuts off when the heatsink is at setpoint. 

I use 12 volt computer fans. 12 volt from the radio Power supply to +12 plus and ground. Jumper from +12 to K1, the fan + lead go to K0 and - to ground Gound too easy. 
Jim 





	  Original Message  



From: arm-allstar at hamvoip.org
Sent: October 27, 2018 07:26
To: arm-allstar at hamvoip.org
Reply-to: arm-allstar at hamvoip.org
Cc: wa3dsp at gmail.com
Subject: Re: [arm-allstar] Fan control via GPIO and control circuit you can get from Amazon


Jim,

 That looks really neat and so cheap. Even though I don't need one I would
 order a couple just to have.

 Doug


 On Sat, Oct 27, 2018 at 1:21 PM "James R. Pilgram via ARM-allstar" <
 arm-allstar at hamvoip.org> wrote:

 > Try checking this out. Works great and cheap!  Jim
 >
 >
 > https://www.ebay.com/itm/50-110-12V-W1209-Digital-thermostat-Temperature-Switch-Control-Sensor-Case-US-/302622490963?skus=Model:W1209%20Temperature%20Control%20Case&varId=601463544181
 >
 > On Sat, Oct 27, 2018, 6:49 AM "Arthur Putnam via ARM-allstar" <
 > arm-allstar at hamvoip.org> wrote:
 >
 > > I would like to turn it on via PTT of pi for a time period. Then shut
 > > down. Not sure if CPU temp could also be monitored and activate as same
 > as
 > > PTT .  Once a temp range was reached?
 > > Too many bun fans running all the time here in the shack.
 > >
 > >
 > > Sent from Yahoo Mail on Android
 > >
 > >   On Sat, Oct 27, 2018 at 8:22 AM, Doug Crompton via ARM-allstar<
 > > arm-allstar at hamvoip.org> wrote:   Arthur,
 > >
 > >  Yes, that module will control a 120V fan from an I/O bit on the Pi fine.
 > > But decide what you want to do regarding controlling it. Leave it on, in
 > > which case you don't need the module, turn it on on TX, turn it on on TX
 > > with delay, Control it with a temperature sensor?
 > >
 > >
 > > *73 Doug*
 > >
 > > *WA3DSP*
 > >
 > > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
 > >
 > > On Sat, Oct 27, 2018 at 11:18 AM "Arthur Putnam via ARM-allstar" <
 > > arm-allstar at hamvoip.org> wrote:
 > >
 > > > You can find more details on Amazon about the Sunfounder relay module.
 > > >
 > > > Sent from Yahoo Mail on Android
 > > >
 > > >  On Sat, Oct 27, 2018 at 8:02 AM, Arthur Putnam via ARM-allstar<
 > > > arm-allstar at hamvoip.org> wrote:  I would like to use the following
 > > > control circuit, to control a bun fan to cool radio.
 > > > SunFounder Relay Module for Arduino and Raspberry Pi 5V DC Trigger by
 > > > HIGHLO (HIGH Trigger)
 > > >
 > > > I am looking for script to use this control circuit and how to apply it
 > > to
 > > > the Rpi 3+ I am using.
 > > > Any ideas or feedback would be much appreciated.
 > > >
 > > >
 > > >
 > > >
 > > > Arthur Putnamemail:n7mnk at yahoo.com
 > > >
 > > >
 > > > _______________________________________________
 > > >
 > > > ARM-allstar mailing list
 > > > ARM-allstar at hamvoip.org
 > > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
 > > >
 > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
 > > > _______________________________________________
 > > >
 > > > ARM-allstar mailing list
 > > > ARM-allstar at hamvoip.org
 > > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
 > > >
 > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
 > > _______________________________________________
 > >
 > > ARM-allstar mailing list
 > > ARM-allstar at hamvoip.org
 > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
 > >
 > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
 > >
 > > _______________________________________________
 > >
 > > ARM-allstar mailing list
 > > ARM-allstar at hamvoip.org
 > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
 > >
 > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
 > _______________________________________________
 >
 > ARM-allstar mailing list
 > ARM-allstar at hamvoip.org
 > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
 >
 > Visit the BBB and RPi2/3 web page - http://hamvoip.org
 >
 _______________________________________________

 ARM-allstar mailing list
 ARM-allstar at hamvoip.org
 http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar

 Visit the BBB and RPi2/3 web page - http://hamvoip.org