Qbkit edu

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_power_P	1	CAN_H
Payload_power_P	2	O3.3	Converter 1 V+ 3V3
Payload_power_P	2	O3.3	Converter 1 V+ 3V3
Payload_power_P	2	O3.3	Converter 1 V+ 3V3
Payload_power_P	2	O3.3	Converter 1 V+ 3V3
Payload_power_P	2	O3.3	Converter 1 V+ 3V3