2 layers85 × 85 mm
EPS v1
Migsster/StormSat-CubeSat
1U CubeSat avionics prototype with custom OBC/EPS/Payload PCBs, STM32 embedded firmware, LoRa TT&C, GNSS and Python mission analysis.
40 parts3
2 layers90.1 × 95.3 mm
On board computer for cubesatellite
- Size
- 90.1 × 95.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 73
- Pads
- 134
- Tracks, vias
- 108, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Feb 2025
- Updated
- 14 Feb 2025
Overview
Onboard is an open-source printed circuit board by prasannan-robots, from the prasannan-robots/On-Board-Computer repository on GitHub. It is a 2-layer board of 90.1 × 95.3 mm with 16 parts on 73 nets, routed with 108 tracks and 0 vias.
It is built around the DS18B20, MPU-6050 and RFM95W-915S2, with the TPS27081ADDCR-TP among its other parts. Its parts include 6 ICs, 3 resistors, 2 connectors and 1 capacitor. It belongs with the RP2040 boards of this library.
Main components
4
DS18B20
TO-92-55℃~+125℃ 12bit 3V~5.5V 750ms Single-bus ±0.4℃ TO-92 Temperature Sensors ROHSUMWTemperature Sensors
MPU-6050
QFN-24-EP(4x4)-40℃~+85℃ 16bit 1KB 2.375V~3.46V 5uA Accelerometer Gyroscope I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24-EP(4x4) Accelerometers ROHSTDK InvenSenseAccelerometers
RFM95W-915S2
LCC-16_16X16mmLCC-16_16X16mm New Arrivals ROHSHopeRF Micro-electronicsUncategorised
TPS27081ADDCR-TP
SOT-23-6-55℃~+150℃ 1 1.8V~8V 3A 80mΩ Load Switch SOT-23-6 Power Distribution Switches ROHSTECH PUBLICPower Distribution Switches
README
README.mdLow Cost Onboard pcb for cubesat
Features:
- Redundant Control
- i2c external communication
- Power via 5v 3.3v
- Inbuilt temperature Monitoring
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 100k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 4.4k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 1 | Conn_01x05 | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J2-I/O |
| 1 | DS18B20 | Package_TO_SOT_THT:TO-92_Inline | U4 |
| 1 | MPU-6050 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | U3 |
| 1 | NEO-6M-GPS | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | U2 |
| 1 | RASPBERRY_PI_PICO | Module:RaspberryPi_Pico_Common_THT | U7 |
| 1 | RFM95W-915S2 | RF_Module:HOPERF_RFM9XW_THT | U1 |
| 1 | Raspberry_Pi_2_3 | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J1 |
| 1 | TPS27081ADDCR | TPS27081A:SOT95P280X110-6N | U5 |
The 12 most common of 16 parts.
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Questions
How big is the Onboard PCB?
It measures 90.1 × 95.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Onboard use?
16 parts, built around the DS18B20, MPU-6050, RFM95W-915S2 and TPS27081ADDCR-TP. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Onboard KiCad files?
From the prasannan-robots/On-Board-Computer repository on GitHub, at the commit this page was made from: the board is onboard/onboard.kicad_pcb and its schematic onboard/onboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Onboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask prasannan-robots before reusing the design.