User`s manual

Telemetry/Control Header
• The RTrak-HAB employs a full telemetry and controls package as part of the tracker
payload. All ADC raw values are reported in the payload of the APRS packet.
• The ADC (Analog to Digital Converter) channels can accept any analog voltage
between 0-5VDC. These channels have on-board 3.3K pull-up resistors and 0.1uF
decoupling capacitors.
• The GPO (General Purpose Output) channels can control numerous devices during
flight. GPO 0-2 switches ground. GPO 3 switches +5VDC
Important! As of writing this document (4/15/2011) the GPO’s are not yet implemented
in firmware. This will be added soon and this document will be updated to reflect that
change.
Telemetry/Control Header Pinout