The mainboard features:
- RP2350A MCU
- W25Q128JVPIQ flash memory
- Waveshare 23721 for GPS signal
- RFM98W 433MHz LoRa module
- MPU-6050 gyroscope and accelerometer
- BMP 280 barometer and thermometer
- USB-C connector
- BOOTSEL and RESET buttons
- Status LED
- Buzzer for easier recovery
Schematics in PDF file
PCB schematic in PDF file
| Id | Designator | Footprint | Quantity | Designation |
|---|---|---|---|---|
| 1 | R5,R24,R12,R1,R21,R23,R22 | R_0805_2012Metric | 7 | 10K |
| 2 | R26,R25 | R_0402_1005Metric | 2 | 4.7K |
| 3 | C25 | C_0805_2012Metric | 1 | 10nF |
| 4 | R4,R3 | R_0805_2012Metric | 2 | 27 |
| 5 | J8 | PinHeader_1x02_P2.00mm_Vertical | 1 | Conn_01x02_Pin |
| 6 | L1 | AOTAB201610S3R3101T | 1 | 3.3u |
| 7 | D2 | LED_0402_1005Metric | 1 | RED |
| 8 | U5 | RP2350-QFN-60-1EP_7x7_P0.4mm_EP3.4x3.4mm_ThermalVias | 1 | RP2350_60QFN |
| 9 | C16,C9,C8,C11 | C_0402_1005Metric | 4 | 4.7uF |
| 10 | C20,C3,C4,C10,C22,C12,C7,C1,C5,C6,C2 | C_0402_1005Metric | 11 | 100nF |
| 11 | C24,C23 | C_0402_1005Metric | 2 | 15pF |
| 12 | C30,C15,C17,C32,C27,C28,C19 | C_0805_2012Metric | 7 | 100nF |
| 13 | BZ1 | CMT-4023S | 1 | Buzzer |
| 14 | J1 | USB_C_Receptacle_Amphenol_12401610E4-2A | 1 | USB_C_Receptacle |
| 15 | C31 | C_0805_2012Metric | 1 | 22u |
| 16 | SW2,SW1,SW3 | SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | 3 | SW_Push |
| 17 | IC1 | SON127P600X500X80-9N-D | 1 | W25Q128JVPIQ |
| 18 | C21,C13 | C_0805_2012Metric | 2 | 1uF |
| 19 | D1 | MMBT2907AM3T5G | 1 | ESD7L5.0DT5G |
| 20 | D4,D3 | D_SOD-123 | 2 | MBR0530T1G |
| 21 | R11,R10 | R_0805_2012Metric | 2 | 5.1K |
| 22 | J10 | PinHeader_1x04_P2.00mm_Vertical | 1 | Conn_01x04_Pin |
| 23 | R18 | R_0805_2012Metric | 1 | 100 |
| 24 | J2 | SMA_Amphenol_901-144_Vertical | 1 | Conn_Coaxial |
| 25 | R17 | R_0402_1005Metric | 1 | 10K |
| 26 | R20 | R_0402_1005Metric | 1 | 33 |
| 27 | U3 | PinHeader_1x05_P1.00mm_Vertical | 1 | Waveshare23721 |
| 28 | C18 | C_0805_2012Metric | 1 | 2.2nF |
| 29 | U8 | Bosch_LGA-8_2x2.5mm_P0.65mm_ClockwisePinNumbering | 1 | BMP280 |
| 30 | R2,R14,R13 | R_0805_2012Metric | 3 | 1K |
| 31 | Y1 | ABM8272T3 | 1 | ABM8272T3 |
| 32 | C29 | C_0805_2012Metric | 1 | 2.2uF |
| 33 | Q1 | SOT-23 | 1 | BSS138 |
| 34 | U9 | PSON50P200X300X50-9N | 1 | APS6404L-3SQR-ZR |
| 35 | J6 | PinHeader_2x03_P1.00mm_Vertical | 1 | Conn_01x06_Pin |
| 36 | R15 | R_0805_2012Metric | 1 | 220 |
| 37 | J7 | JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical | 1 | Conn_01x03_Pin |
| 38 | R16 | R_0805_2012Metric | 1 | DNC |
| 39 | J5 | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | 1 | Screw_Terminal_01x02 |
| 40 | J9 | JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical | 1 | Conn_01x02_Pin |
| 41 | J11 | JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | 1 | Conn_01x03_Socket |
| 42 | J3 | JST_SH_BM06B-SRSS-TB_1x06-1MP_P1.00mm_Vertical | 1 | Conn_01x06_Socket |
| 43 | U4 | HOPERF_RFM9XW_SMD | 1 | RFM98W-433S2 |
| 44 | C14 | C_0805_2012Metric | 1 | DNP |
| 45 | U1 | InvenSense_QFN-24_4x4mm_P0.5mm | 1 | MPU-6050 |
| 46 | J4 | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | 1 | Conn_01x02_Pin |
| 47 | R19 | R_0402_1005Metric | 1 | 1K |