2 layers31.6 × 25.2 mm
4 layers95.9 × 90.2 mm
Hab1 flight
barcklay/Cube_SATBuilding Sattelite part time
- Size
- 95.9 × 90.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 80
- Pads
- 265
- Tracks, vias
- 694, 167
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Sep 2026
- Updated
- 23 Oct 2026
Overview
Hab1 flight is an open-source printed circuit board by barcklay, from the barcklay/Cube_SAT repository on GitHub. It is a 4-layer board of 95.9 × 90.2 mm with 75 parts on 80 nets, routed with 694 tracks and 167 vias.
It is built around the STM32G474RET6, E22-400M22S and LDL1117S33R, with the 1N4148W, AO3400A and AO3401A among its other parts. Its parts include 23 resistors, 15 capacitors, 11 connectors, 3 ICs and 3 diodes. It belongs with the STM32 boards of this library.
Main components
6
STM32G474RET6
LQFP-64(10x10)-40℃~+85℃ 1.71V~3.6V 128KB 12bit 12bit 170MHz 32 Bit 512KB 52 ARM Cortex-M4F Built-in FLASH LQFP-64(10x10) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
E22-400M22S
SMD,20x14mm-147dBm 1.8V~3.7V 100mA 22.3dBm 6.5mA 7km Continuous frequency coverage LoRa SPI Stamp Hole Antenna、IPEX interface SMD,20x14mm LoRa Modules ROHSChengdu Ebyte Elec TechLoRa Modules
LDL1117S33R
SOT-223-4-40℃~+125℃@(Tj) 1 1.2A 18V 3.3V 500uA 600mV@(1.2A) 60uVrms 87dB@(120Hz) Fixed Over Current Protection、Thermal Shutdown Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsAO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
hardware/lora_adapter/README.mdE22-400M22S breakout board
The Ebyte E22-400M22S LoRa module has castellated pads at 1.27 mm pitch: it fits neither a breadboard nor jumper wires, and no ready adapter with 2.54 mm pins is sold for it. This small board (31.6 x 25.2 mm, 2 layers) brings every pin out to two rows of ordinary pins 0.8 inch (20.32 mm) apart, so it plugs into a breadboard. It is for the bench and the ground station; the flight board carries the module itself.
| Left row, top to bottom | Right row, top to bottom |
|---|---|
| GND | GND |
| DIO1 | 3V3 (the module allows 3.7 V at most) |
| BUSY | DIO2 |
| NRST | TXEN |
| MISO | RXEN |
| MOSI | GND |
| SCK | GND |
| NSS | GND |
On the board: the module, 4.7 uF + 100 nF at its supply pin, ground pours on both sides, no tracks under the module on the top side. The antenna goes on the module's own IPX connector.
Files
python3 gen_adapter.py (KiCad's Python) builds everything: e22_adapter.kicad_pcb and, in
fab/, the gerber zip, BOM and CPL for JLCPCB. JLCPCB solders the module (LCSC C411291) and the
two capacitors; the two 1x8 pin rows are soldered by hand, pins pointing down.
Checked: DRC without errors (one cosmetic silkscreen note), 0 unconnected. Not checked: a real order; the rotation of the module in the CPL (look at the placement picture in the order form: the pin-1 dot is at the bottom right, the antenna connector at the bottom left).
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100n | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C7, C8, C9, C12, C13, C15, C16 |
| 8 | 1k | Resistor_SMD:R_0603_1608Metric | R10, R11, R16, R17, R18, R19, R20, R21 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R7, R8, R9, R13 |
| 4 | 4.7k | Resistor_SMD:R_0603_1608Metric | R4, R5, R6, R12 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric | R2, R22, R23 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric | R14, R15 |
| 2 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C10, C14 |
| 1 | +3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 10u 16V | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D3 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 600R@100MHz | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | ALIVE red | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BAROMETER BMP390 | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J6 |
| 1 | BATTERY 4xL91 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | BUZZER (+ / -) | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J11 |
| 1 | DS18B20 probe | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J8 |
| 1 | E22-400M22S | hab1:E22-400M22S | U3 |
| 1 | EXPANSION | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J12 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | GPS FIX yellow | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | GPS MAX-M10S | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J7 |
| 1 | I2C_SCL | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | I2C_SDA | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | IMU GY-601N1 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J5 |
| 1 | LDL1117S33R | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | OLED SSD1306 (bench) | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J10 |
| 1 | POWER SWITCH (on the box) | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | PTC 0.2A 24V | Fuse:Fuse_1206_3216Metric | F2 |
| 1 | PTC 0.5A 24V | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_TL3342 | SW1 |
| 1 | SPI FLASH module | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J4 |
| 1 | SPI1_SCK | TestPoint:TestPoint_Pad_D1.5mm | TP8 |
| 1 | SPI2_SCK | TestPoint:TestPoint_Pad_D1.5mm | TP10 |
| 1 | SPI3_SCK | TestPoint:TestPoint_Pad_D1.5mm | TP9 |
| 1 | STDC14 SWD+VCP | Connector_PinHeader_1.27mm:PinHeader_2x07_P1.27mm_Vertical_SMD | J3 |
| 1 | STM32G474RET6 | Package_QFP:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | USART1_RX | TestPoint:TestPoint_Pad_D1.5mm | TP7 |
| 1 | USART1_TX | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | VBAT_PROT | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
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Questions
How big is the Hab1 flight PCB?
It measures 95.9 × 90.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Hab1 flight use?
75 parts, built around the STM32G474RET6, E22-400M22S, LDL1117S33R and 1N4148W. 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 Hab1 flight KiCad files?
From the barcklay/Cube_SAT repository on GitHub, at the commit this page was made from: the board is hardware/flight_pcb/hab1_flight.kicad_pcb and its schematic hardware/flight_pcb/hab1_flight.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hab1 flight design in my own project?
Its repository states no licence, so its author keeps all rights: ask barcklay before reusing the design.