v1.1 "Rigel" (a star in Orion's constellation)
The board includes:
- Adafruit BMP388 Barometric and Pressure Sensor
- Hitlego MPU-6050 Accelerometer and Gyroscope
- Adafruit Ultimate GPS
- Digi XBee-PRO XSC S3B
- Sparkfun XBee Adapter
- Teensy 4.1
- Linear Regulator (9V -> 5V)
Communication Protocols Used:
| Component | Communication Protocol |
|---|---|
| BMP388 | SPI |
| ECU 1.5 "Orion" | I2C (Wire) |
| GPS | UART (Serial 2) |
| MPU-6050 | I2C (Wire 1) |
| SD Module | SPI |
| XBEE | UART (Serial 6) |
Pinouts:
BMP
- CS -> 10 CS
- SDI -> 11 MOSI
- SDO -> 12 MISO
- SCK -> 13 SCK
ECU 1.5 "Orion"
- SDA2 -> 18 SDA
- SCL2 -> 19 SCL
GPS (Serial2 port in Teensy 4.1)
- TX -> 7 RX2
- RX -> 8 TX2
MPU (Wire1 port in Teensy 4.1)
- SDA -> 17 SDA1
- SCL -> 16 SCL1
SD Module
- MISO -> 39 MISO1
- MOSI -> 26 MOSI1
- SCK -> 27 SCK1
- CS -> 38 CS1
XBEE (Serial6 port in Teensy 4.1)
- DOUT -> 25 RX6
- DIN -> 24 TX6
- The board requires an external 9V battery to power sensors and the Teensy. The onboard regulator will step down to 5V and provide stable 5V power.
- The GPS uses an optional "CR1220 coin cell to keep the RTC running and allow warm starts"
- The XBee module (not on AFS PCB) mounts on top of the XBee USB adapter. The USB adapter board has power and serial pass-through to the XBee module
- The board was renamed from "Avionics Test Payload (ATP)" to "Avionics Flight Sensor (AFS)"
- Changed Adafruit XBee USB Adapter to Sparkfun XBee Adapter
- XBee receives 5V from regulator, instead of 3.3V from Teensy. During testing we found out that Teensy did not supply enough power for Xbee communication and after sending 1 or 2 packages of data, the Teensy would stop working.
- Regulator is flipped, so we can attach a heat sink