If you are really concerned that a relay will "wear out" in your lifetime, then just buy an adjustable fan switch (close on rise) from Grainger. They have different models with different temperature ranges, but I suggest an adjustable one. They are $8.00 You can control a 12v or 110v fan with these. Stick it to the heatsink of the PA and it will come on when it gets hot, and shut off when it has cooled down. If you insist on trying to control a fan via GPIO (on with PTT and off when no PTT) then your heatsink will never cool down if your repeater is popular. If you build the recommended circuit from DMK, you can add a 555 timer to it to give it some shut off delay if you want. But then, it's gonna cost you more than the cheap fan switch from Grainger. But wait, there are no hobbyists anymore that build anything from their parts bins. Sorry I suggested that! Go get one from Grainger..... You only have to splice it into one wire...how hard can that be? On Thu, Jan 26, 2012 at 9:00 AM, <app_rpt-users-request@ohnosec.org> wrote:

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Today's Topics:

1. WebTransceiver stopped working (Michael J. Wolthuis) 2. Re: WebTransceiver stopped working (Jim Duuuude) 3. Figured it out with web transceiver (Michael J. Wolthuis) 4. Re: GPIO fan control (K&R Yoksh) 5. Re: GPIO fan control (Tim Sawyer)

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Message: 1 Date: Wed, 25 Jan 2012 17:33:52 -0500 From: "Michael J. Wolthuis" <wolthui3@msu.edu> To: app_rpt-users@ohnosec.org Subject: [App_rpt-users] WebTransceiver stopped working Message-ID: <4F208350.9080204@msu.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I have not made any changes to my node recently, but suddenly WebTransceiver has stopped connection. It was working fine, and the rest of the node seems ok.

This is for node ast28241. The config files are downloaded from the portal and have Webtransceiver enabled. I confirmed UDP port 4569 open though my firewall to the system.

Any other suggestions where to look?

I can connect with iaxrpt fine via the gui user.

Mike kb8zgl

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Message: 2 Date: Wed, 25 Jan 2012 15:55:56 -0800 From: Jim Duuuude <telesistant@hotmail.com> To: <wolthui3@msu.edu>, app_rpt mailing list <app_rpt-users@ohnosec.org> Subject: Re: [App_rpt-users] WebTransceiver stopped working Message-ID: <BLU155-W2432EA5FC9C1E5206E7C5B1880@phx.gbl> Content-Type: text/plain; charset="iso-8859-1"

works fine for me

...

Date: Wed, 25 Jan 2012 17:33:52 -0500 From: wolthui3@msu.edu To: app_rpt-users@ohnosec.org Subject: [App_rpt-users] WebTransceiver stopped working

I have not made any changes to my node recently, but suddenly WebTransceiver has stopped connection. It was working fine, and the rest of the node seems ok.

This is for node ast28241. The config files are downloaded from the portal and have Webtransceiver enabled. I confirmed UDP port 4569 open though my firewall to the system.

Any other suggestions where to look?

I can connect with iaxrpt fine via the gui user.

Mike kb8zgl

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