Qbkit edu
From Open Cosmos :: Documentation
Contents
qbkit hardware
qbkit edu emulates the mechanical and electrical interfaces of a nanosatellite mission: power and data interfaces, flexible mechanical interfaces and an Open Source computing platform running Linux OS.
The main components of the qbkit edu are:
- qbkit edu electronics
- Beaglebone Open Source computer. - qbkit power and data interfaces shield for Beaglebone.
- 3d printed structure
qbkit edu electronics
Power buses
Qbkit edu electronics contain:
- Converter 1 and converter 2 step down converters with manually configurable voltage and up to 3A current rating. Factory configuration is the following one:
- Converter 1: 3.3V - Converter 2: 5V
- Converter 3: step up converter with manually configurable voltage. Range: from Vin (12V with adaptor supplied) to 28V. Current rating is limited by the qbkit edu power supply (12V at 2A max).
Each power bus contains a current sensor.
qbkit edu electronics contains another step down converter currently not being used.
Adjustment of power buses voltage
Voltage in each of the 3 power buses can be adjusted
Data buses
qbkit edu electronics contain the following data buses:
- CAN
- I2C
- SPI
- UART
- 2x GPIO
qbkit edu PL interface pinout
The following table shows the pin out of the payload connector on the qbkit edu electronics.
Header | Pin number | Pin name | Comment |
---|---|---|---|
Payload_power_P | 1 | DGN | Ground |
Payload_power_P | 2 | O3.3 | Converter 1 V+ 3V3 |
Payload_power_P | 3 | DGN | Ground |
Payload_power_P | 4 | O5 | Converter 2 V+ 5V |
Payload_power_P | 5 | DGN | Ground |
Payload_power_P | 6 | OH | Converter 3 V+ high power |
Payload_data_P | 1 | CAN_H | |
Payload_data_P | 2 | CAN_L | |
Payload_data_P | 3 | I2C_SCL | |
Payload_data_P | 4 | I2C_SDA | |
Payload_data_P | 5 | SPI_CS0 | |
Payload_data_P | 6 | SPI_SCLK | |
Payload_data_P | 7 | SPI_D0 | |
Payload_data_P | 8 | SPI_D1 | |
Payload_data_P | 9 | UART1_TXD | |
Payload_data_P | 10 | UART1_RXD | |
Payload_data_P | 11 | GPIO1_12 | |
Payload_data_P | 12 | GPIO1_13 |