It should be possible to set a bit on the parallel port which follows PTT with the events management system. see http://ohnosec.org/drupal/node/176 I've not tried this but something like this might work: In rpt.conf events=events [events] cop 62, PP03 = c|e|${RPT_TXKEYED} A USB node would be needed with a PP03 = out0 in the chan config: In simpleusb.conf or usbradio.conf PP03 = out0 -- Tim :wq On Jan 25, 2012, at 8:20 PM, K&R Yoksh wrote:
Hello all,
I considered doing this on my nodes, but didn't want to have a relay or fan wear out by cycling on each PTT. I tried using the connpgm and discpgm in rpt.conf to enable the fan during connections, and disable afterwards, but it was not very effective.
I'd really like to find a fan control script like what I used on EchoIRLP... Something that activates by PTT, and keeps the fan going for X seconds afterwards..
I have multiple GPIO lines available on my parallel port, and still have the fan control hardware that I built for my EchoIRLP station here. At this point, the fan is just running 24 x 7.
Maybe someone can come up with such a script? My bash is pretty crude.
73
Kyle K0KN
--- Original Message ---
Has anyone used the GPIO lines on a URI to active a 12 volt DC fan when the PTT is active? I have a friend that who wants to implement this on his All-star node to keep his transmitter cool. I guess that we would need to use a relay with the GPIO line to protect the URI? Any thoughts or suggestions? Marshall - ke6pcv
Marshall,
I had the same idea and I contacted David Kramer at DMK Engineering (makers of the URI). He responded with this link on how to do exactly what you want;
http://www.dmkeng.com/images/GPIO_Relay.pdf
I tried it and it works great....
73, Neil WA5JXY
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