15193RE: [tracker2] OT USB Telemetry
- Feb 4, 2013
My OT-3M has been reporting 0.3 volts low for about a year now.
I could change the telemetry by sending a message if I can remember the format, but that won’t help the comment field.
So – is there an adjustment for this?
Joe Della Barba
I have an OT USB that I am using for telemetry. It seems that the telemetry inputs on CN-4 are a bit skewed. CN-4 pin 5 is connected directly to my battery. Measured voltage is 13.1 but the telemetry value reported is 164. I expected the telemetry value to be 131. I also noticed my reported battery voltage in the comment field is 16.4V.
Firmware version 55871 installed.
CN4 pin 1 should be directly connected to the +5 volt supply according to the schematic. The voltage on this pin measures 4.23V. I measured the output on the +5V regulator and it is 4.99V. The 1 wire temperature pin 2 seems to be ok. I have a light sensor and moisture sensors connected to the CN4 header also.
I have EXTTEMP on, and voltage and temperature reporting in the comment section. Here is a link to my telemetry page : http://aprs.fi/telemetry/a/N9TKF-4
Has anyone encountered this problem and have a solution?
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