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From: | Luke Ionno |
Subject: | Re: [Paparazzi-devel] using |
Date: | Tue, 13 Sep 2011 18:14:53 -0400 |
Hi! I’ve actually done just what you’re talking about (a switching circuit) for the telemetry modem… I used a MOSFET, with the gate attached to the AUX pin on the TWOG, which allowed the telemetry to be switched off (not on, obviously) via the GCS, by calling a flight-plan block. (I used a flight plan stage timer to bring it back on after a set time.) In your case, though, I think the easiest solution would be to connect the MOSFET gate to a dedicated PIC chip (or similar, a SMT version would be idea) programmed to take the gate pin low for a second or two every 5 minutes, to avoid having to tie the timer into the actual Paparazzi flight plan. Be aware that people have reported problems with powering XBees up with data on the serial line in, though I’ve never experienced this personally. (Apparently it can brick the XBee, requiring a reviving procedure to bring it back to life.) Hope this helps! ~Luke From: address@hidden [mailto:address@hidden On Behalf Of limaiem imed Hi all, |
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