MOTOR RF HAT
About the MOTOR RF HAT
MOTOR RF HAT is an open source RP2040/RP2350 PCB design by Just4Stan, published on GitHub. It is a 6-layer board measuring 56 × 65 mm, with 131 components from 59 distinct parts.
Its main chip is the SC0915, from the RP2040/RP2350 family. Other key parts include the XT30PW-M, LMR51420YFDDCR, CC1200RHBR and A4950ELJTR-T. By type, the board carries 71 capacitors, 17 inductors, 14 resistors, 7 ICs, 7 connectors and 6 test points.
It belongs with the rf & radio and dev boards & breakouts designs in this gallery.
From the project
RP2040-based AZ/EL rotator controller for SatNOGS-compatible satellite ground stations. Custom PCB, PID motor control, EasyComm/hamlib protocol over USB.
Portable, SatNOGS-compatible ground station for the AetherSpace CubeSat at 433 MHz. Built as a joint Master's thesis at KU Leuven (Campus Geel), 2025–2026.
This project is a deliberate alternative to the canonical SatNOGS receive stack. A fully capable SatNOGS ground station can be built with a Raspberry Pi 3, the official satnogs-client, an RTL-SDR dongle, and any hamlib-compatible rotator — and for receiving arbitrary amateur satellites that is the right choice. We built this station instead because:
Main components on the MOTOR RF HAT
MOTOR RF HAT bill of materials (BOM)
131 components, 59 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | XT30PW-M | AMASS_XT30PW-M_1x02_P2.50mm_Horizontal | U1 |
| 1 | LMR51420YFDDCR | SOT-23-6_L2.9-W1.6-P0.95-LS2.9-BL | U2 |
| 2 | CC1200RHBR | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U3, U5 |
| 1 | SC0915 RaspberryPi_Pico | RaspberryPi_Pico_SMD | U4 |
| 2 | A4950ELJTR-T A4950E | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm | U6, U7 |
| 1 | BSS138 | SOT-23 | Q1 |
| 2 | 40MHZ 40MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y2 |
| 2 | CONN_01X01 Conn_01x01 | PinHeader_1x01_P2.00mm_Vertical | J1, J2 |
| 1 | RASPBERRY_PI_2_3 Raspberry_Pi_2_3 | PinHeader_2x20_P2.54mm_Vertical | J3 |
| 2 | SMA | SMA_Amphenol_132289_EdgeMount | J4, J5 |
| 1 | C157919 JST_AZ | CONN-TH_S6B-XH-A-LF-SN | J6 |
| 1 | C157919 JST_EL | CONN-TH_S6B-XH-A-LF-SN | J7 |
| 1 | MISO | smallpad | TP1 |
| 1 | MOSI | smallpad | TP2 |
| 1 | CLK | smallpad | TP3 |
| 1 | CS | smallpad | TP4 |
| 1 | 3.3V | smallpad | TP5 |
| 1 | GND | smallpad | TP6 |
| 1 | C3759853 D_Schottky | D_0603_1608Metric | D1 |
| 4 | WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D2, D4, D5, D6 |
Show 39 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1N4148WS | D_SOD-323 | D3 |
| 1 | XRTC303020D4R7MBCA | IND-SMD_L3.0-W3.0_AFE303020S | L1 |
| 3 | 100NH 100nH | L_0603_1608Metric | L2, L3, L5 |
| 1 | 47NH 47nH | L_0603_1608Metric | L4 |
| 2 | 27NH 27nH | L_0603_1608Metric | L6, L9 |
| 2 | 56NH 56nH | L_0603_1608Metric | L7, L11 |
| 2 | 15NH 15nH | L_0603_1608Metric | L8, L15 |
| 1 | 270NH 270nH | L_0603_1608Metric | L10 |
| 2 | 22NH 22nH | L_0603_1608Metric | L12, L17 |
| 1 | 120NH 120nH | L_0603_1608Metric | L13 |
| 1 | 82NH 82nH | L_0603_1608Metric | L14 |
| 1 | 43NH 43nH | L_0603_1608Metric | L16 |
| 1 | C98192 4.7uF 50v | C_1206_3216Metric | C1 |
| 1 | 100N 100n | C_0603_1608Metric | C2 |
| 1 | 22UF 22uF | C_0805_2012Metric | C3 |
| 6 | 220NF 220nF | C_0603_1608Metric | C4, C5, C6, C7, C28, C36 |
| 8 | 15PF 15pF | C_0603_1608Metric | C8, C9, C10, C12, C16, C23, C48, C52 |
| 1 | 1.8NF 1.8nF | C_0603_1608Metric | C11 |
| 1 | 1.5NF 1.5nF | C_0603_1608Metric | C13 |
| 22 | 47NF 47nF | C_0603_1608Metric | C14, C15, C17, C18, C19, C20, C22, C25 +14 |
| 4 | 10NF 10nF | C_0603_1608Metric | C21, C31, C41, C51 |
| 3 | 5.1PF 5.1pF | C_0603_1608Metric | C24, C33, C57 |
| 5 | 100PF 100pF | C_0603_1608Metric | C37, C39, C44, C54, C56 |
| 1 | 1.5PF 1.5pF | C_0603_1608Metric | C45 |
| 1 | 56PF 56pF | C_0603_1608Metric | C47 |
| 1 | 39PF 39pF | C_0603_1608Metric | C49 |
| 1 | 2.2PF 2.2pF | C_0603_1608Metric | C55 |
| 1 | 6.2PF 6.2pF | C_0603_1608Metric | C58 |
| 1 | 1NF 1nF | C_0603_1608Metric | C59 |
| 6 | CL10A106KP8NNNC 10uF | C_0805_2012Metric | C60, C61, C62, C64, C65, C66 |
| 2 | CC0603KRX7R9BB104 100nF | C_0603_1608Metric | C63, C67 |
| 4 | CL10C101JB8NNNC 100pF | C_0603_1608Metric | C68, C69, C70, C71 |
| 1 | 100K 100k | R_0603_1608Metric | R1 |
| 1 | 13.7K 13.7k | R_0603_1608Metric | R2 |
| 4 | 10K 10k | R_0603_1608Metric | R3, R4, R5, R7 |
| 2 | 56K 56k | R_0603_1608Metric | R6, R8 |
| 1 | 22R | R_0603_1608Metric | R9 |
| 1 | 18R | R_0603_1608Metric | R10 |
| 4 | 0603WAF1000T5E 100R | R_0603_1608Metric | R11, R12, R13, R14 |
MOTOR RF HAT design files
The KiCad project lives in the Just4Stan/SatNOGS-Basestation repository on GitHub; these links point at the commit this page was built from.
MOTOR RF HAT: common questions
What microcontroller does the MOTOR RF HAT use?
The MOTOR RF HAT is built around the SC0915, from the RP2040/RP2350 family.
How big is the MOTOR RF HAT?
The MOTOR RF HAT measures 56 × 65 mm, has 6 copper layers and is 1.0278 mm thick.
How many components are on the MOTOR RF HAT?
131 components, from 59 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the MOTOR RF HAT design files?
From the Just4Stan/SatNOGS-Basestation repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the MOTOR RF HAT design in my own project?
The repository has no license, so all rights stay with Just4Stan. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MOTOR RF HAT without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.
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