They use a PIC processor and a TI CC1050 transmitter chip, and
operate in the ham radio 70cm band.
-One weekend while attending a conference together, We got to wondering if
+One weekend while attending a conference together, we got to wondering if
we couldn't adapt one to use as a downlink for the
[AltusMetrum](../AltusMetrum/) altimeter board in addition to direction
finding after flight. That caused us to start thinking about other things
* SPI interface
* Various Sensors
* Freescale MP3H6115A pressure sensor
- * Freescale MMA2202 50g accelerometer
+ * Freescale MMA2202EG 50g accelerometer. Can use 40-200g variants!
* Microchip MCP9700A temperature sensor
-* Software Features
+* Software Features (planned)
* Written mostly in C with some 8051 assembler
* Runs from on-chip flash, uses on-chip RAM, stores flight data to
serial EEPROM chip
* USB serial emulation for "console" interface
+ * USB mass storate emulation for data recovery
* Uses the SDCC compiler and FreeRTOS
* Licenses
* The hardware is licensed under the TAPR OHL