2 layers80 × 80 mm
Kubisat main
gredzikk/kubisat
Hardware and software of cubesat model for engineering thesis
37 parts2MIT
2 layers80 × 80 mm
Kubisat power v2
gredzikk/kubisat2Hardware and software of cubesat model for engineering thesis
- Size
- 80 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 82
- Nets
- 62
- Pads
- 238
- Tracks, vias
- 769, 52
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 20 Aug 2024
- Updated
- 20 Oct 2026
Overview
Kubisat power v2 is an open-source printed circuit board by gredzikk, from the gredzikk/kubisat repository on GitHub, published under the MIT licence. It is a 2-layer board of 80 × 80 mm with 82 parts on 62 nets, routed with 769 tracks and 52 vias.
It is built around the LN2220PAR, CN3791 and DW01A, with the FS8205, TP4056 and SS14 among its other parts. Its parts include 35 resistors, 16 capacitors, 12 diodes, 7 ICs and 3 connectors.
Main components
9
LN2220PAR
SOT-23-6L-40℃~+80℃@(TA) 1 1.2MHz 100uA 2.5V~28V 2A 2V~24V Adjustable Boost Boost Built-in SOT-23-6L DC-DC Converters ROHSNATLINEARDC-DC Converters
CN3791
SSOP-10-150mil-40℃~+85℃ 1 15uA 4.2V 4.5V~28V 4A Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定、过压保护 SSOP-10-150mil Battery Management ROHSShangHai Consonance ElecBattery ManagementDW01A
SOT-23-6L-40℃~+85℃ 1 2.5V 300mV~10V 3uA 4.3V Protection IC Support SOT-23-6L Battery Management ROHSPUOLOPBattery ManagementFS8205
SOT-23-6-55℃~+150℃ 1.2V 1W 2 N-Channel 20V 37mΩ@2.5V 6A N-Channel SOT-23-6 MOSFETs ROHSFORTUNEMOSFETs
TP4056
ESOP-8-40℃~+85℃ 1 1A 35uA 4.2V 4V~6.5V Charging IC Lithium Battery Support Support 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 ESOP-8 Battery Management ROHSUMWBattery Management
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
BK-18650-PC4
插件插件 Button And Strip Battery Connector ROHSMPDButton And Strip Battery ConnectorSS54
SMA(DO-214AC)-55℃~+125℃ 1mA@40V 40V 550mV@5A 5A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
SI2305
SOT-23-55℃~+150℃ 1 P-Channel 12V 15nC@4.5V 290pF 350mW 4.1A 45mΩ@4.5V 740pF 900mV SOT-23 MOSFETs ROHSGuangdong HottechMOSFETs
README
README.mdKubiSat: An Open-Source Pico-Satellite Project
Welcome to the KubiSat project! This repository contains all the necessary files to build your own small satellite based on the Raspberry Pi Pico, along with the corresponding ground station firmware. This project was originally conceived as an engineering thesis and has been open-sourced to be useful to a wider community.
Project Structure
The repository is organized into several key directories:
software/: Firmware, shared protocol/radio code, and host tooling.kubisat_firmware/: Satellite firmware. See the firmware README.ground_firmware/: Ground station LoRa↔UART bridge. See the ground README.common/: Shared LoRa driver and protocol helpers (CRC, frame markers, sync word).kubisat_operator/: Avalonia/.NET operator GUI for talking to the ground station over serial.- Status:
software/FIRMWARE_STATUS.md, protocol:software/commands.md.
hardware/: KiCad project files for the satellite's printed circuit boards (PCBs), including the main board, power board, and sensor board.case_stl/: Contains the STL files for the 3D-printable satellite chassis.doc/: A collection of datasheets for the main components used in the project.
Features
Satellite (kubisat_firmware)
- Modular Architecture: Code is organized into libraries for communications, sensors, power management, and data logging.
- Data Logging: Uses the
pico-vfslibrary to log telemetry and events to an SD card. - LoRa Communication: Sends and receives data frames using a LoRa module for long-range communication.
- Remote Commands: Supports a command protocol for remote operation and diagnostics.
- Automated Build: Uses CMake for a managed build process with automatic versioning.
Ground Station (ground_firmware)
- LoRa-UART Bridge: Relays messages between a host computer (via USB/Serial) and the satellite (via LoRa).
- Simple Addressing: Ensures messages are correctly routed between the ground station and the satellite.
- Signal Strength Reporting: Can be triggered to report the RSSI and SNR of received packets.
Getting Started
To get started with building and flashing the firmware, please refer to the detailed instructions in the README files for each respective firmware:
- For the satellite: kubisat_firmware/readme.md
- For the ground station: ground_firmware/readme.md
The hardware can be manufactured using the KiCad files in the hardware/ directory, and the case can be 3D printed using the files in case_stl/.
Contributing
Contributions are welcome! Please read our contributing guidelines to get started. You can report bugs, suggest features, or submit pull requests.
License
This project is licensed under the MIT License. See the LICENSE file for details.
Parts
82| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 1k | Resistor_SMD:R_0805_2012Metric | R15, R16, R19, R23, R24, R33, R34, R35, R36, R37 |
| 6 | 100n | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5, C6, C11, C13 |
| 6 | 10R | Resistor_SMD:R_0805_2012Metric | R3, R4, R6, R7, R9, R10 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric | R27, R28, R29, R30, R31, R32 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 3 | 0R01 | Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R5, R8, R11 |
| 2 | 10u | Capacitor_SMD:CP_Elec_4x5.4 | C2, C8 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C12, C15 |
| 2 | 5k1 | Resistor_SMD:R_0805_2012Metric | R17, R18 |
| 2 | SS14 | Diode_SMD:D_SMA | D1, D12 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric | R20 |
| 1 | 100 | Inductor_SMD:L_Bourns_SRP7028A_7.3x6.6mm | L2 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric | C9 |
| 1 | 10u/25V | Capacitor_SMD:C_1210_3225Metric | C16 |
| 1 | 120 | Resistor_SMD:R_0805_2012Metric | R26 |
| 1 | 13k3 | Resistor_SMD:R_0805_2012Metric | R13 |
| 1 | 1k5 | Resistor_SMD:R_0805_2012Metric | R14 |
| 1 | 1u | Capacitor_SMD:CP_Elec_4x5.4 | C7 |
| 1 | 220n | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 22u | Capacitor_SMD:C_1206_3216Metric | C10 |
| 1 | 27k | Resistor_SMD:R_0805_2012Metric | R21 |
| 1 | 3.3.uH | Inductor_SMD:L_Cenker_CKCS5040 | L1 |
| 1 | 47/50V | Capacitor_SMD:C_Elec_6.3x5.8 | C14 |
| 1 | 5V_OK | LED_SMD:LED_0805_2012Metric | D11 |
| 1 | 6k8 | Resistor_SMD:R_0805_2012Metric | R22 |
| 1 | B2B-PH-SM4-TB_LF__SN_ | kubisat:B2B-PH-SM4-TB_LF__SN_ | J2 |
| 1 | BK-18650-PC4 | Library:BAT_BK-18650-PC4 | BT1 |
| 1 | CN3791 | Package_SO:SSOP-10-1EP_3.9x4.9mm_P1mm_EP2.1x3.3mm | U4 |
| 1 | CRIT | LED_SMD:LED_0805_2012Metric | D9 |
| 1 | Conn_01x06_MountingPin | Connector_JST:JST_PH_S6B-PH-SM4-TB_1x06-1MP_P2.00mm_Horizontal | J3 |
| 1 | DW01A | Package_TO_SOT_SMD:SOT-23-6 | U6 |
| 1 | FS8205 | Package_SO:TSSOP-8_3x3mm_P0.65mm | U7 |
| 1 | INA3221 | Package_DFN_QFN:Texas_RGV0016A_VQFN-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mm | U2 |
| 1 | LN2220 | Package_TO_SOT_SMD:TSOT-23-6_HandSoldering | U3 |
| 1 | PV | LED_SMD:LED_0805_2012Metric | D10 |
| 1 | R050 | Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R25 |
| 1 | SS54 | Diode_SMD:D_SMA | D6 |
| 1 | S_CHG | LED_SMD:LED_0805_2012Metric | D5 |
| 1 | S_DONE | LED_SMD:LED_0805_2012Metric | D4 |
| 1 | Si2305 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | TC | LED_SMD:LED_0805_2012Metric | D7 |
| 1 | TP4056 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U5 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:GCT_USB4140-GF-0230-C_REV0.4 | J1 |
| 1 | U_CHG | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | U_DONE | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | WARN | LED_SMD:LED_0805_2012Metric | D8 |
| 1 | ~ | Package_TO_SOT_SMD:SOT-23-5 | U1 |
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Questions
How big is the Kubisat power v2 PCB?
It measures 80 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kubisat power v2 use?
82 parts, built around the LN2220PAR, CN3791, DW01A and FS8205. 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 Kubisat power v2 KiCad files?
From the gredzikk/kubisat repository on GitHub, at the commit this page was made from: the board is hardware/kubisat_power/kubisat_power_v2.kicad_pcb and its schematic hardware/kubisat_main/comms.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kubisat power v2 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).