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Just4Stan
RP2040-based AZ/EL rotator controller for SatNOGS-compatible satellite ground stations. Custom PCB, PID motor control, EasyComm/hamlib protocol over USB.
| Reference | Value | Description |
|---|---|---|
| Q1 | BSS138 | 50V Vds, 0.22A Id, N-Channel MOSFET, SOT-23 |
| U1 | XT30PW-M | |
| U2 | LMR51420YFDDCR | |
| U3,U5 | CC1200RHBR | |
| U4 | RaspberryPi_Pico | |
| U6,U7 | A4950E | Full-Bridge, DMOS PWM, Motor Driver, 40V, 3.5A, -40 to +85C |
| C1 | 4.7uF 50v | Unpolarized capacitor |
| C2 | 100n | |
| C3 | 22uF | Unpolarized capacitor |
| C4-C7,C28,C36 | 220nF | |
| C8-C10,C12,C16,C23,C48,C52 | 15pF | |
| C11 | 1.8nF | |
| C13 | 1.5nF | |
| C14,C15,C17-C20,C22,C25-C27,C29,C30,C32,C34,C35,C38,C40,C42,C43,C46,C50,C53 | 47nF | |
| C21,C31,C41,C51 | 10nF | |
| C24,C33,C57 | 5.1pF | |
| C37,C39,C44,C54,C56,C68-C71 | 100pF | Unpolarized capacitor |
| C45 | 1.5pF | |
| C47 | 56pF | |
| C49 | 39pF | |
| C55 | 2.2pF | |
| C58 | 6.2pF | |
| C59 | 1nF | |
| C60-C62,C64-C66 | 10uF | Unpolarized capacitor |
| C63,C67 | 100nF | Unpolarized capacitor |
| D1 | D_Schottky | Schottky diode |
| D2,D4-D6 | WS2812B-2020 | RGB LED with integrated controller, 2.0 x 2.0 mm, 12 mA |
| D3 | 1N4148WS | 75V 0.15A Fast switching Diode, SOD-323 |
| J1,J2 | Conn_01x01 | Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3 | Raspberry_Pi_2_3 | |
| J4,J5 | SMA | |
| J6 | JST_AZ | |
| J7 | JST_EL | |
| L1 | XRTC303020D4R7MBCA | |
| L2,L3,L5 | 100nH | |
| L4 | 47nH | |
| L6,L9 | 27nH | |
| L7,L11 | 56nH | |
| L8,L15 | 15nH | |
| L10 | 270nH | |
| L12,L17 | 22nH | |
| L13 | 120nH | |
| L14 | 82nH | |
| L16 | 43nH | |
| R1 | 100k | |
| R2 | 13.7k | |
| R3-R5,R7 | 10k | |
| R6,R8 | 56k | |
| R9 | 22R | |
| R10 | 18R | |
| R11-R14 | 100R | Resistor |
| TP1 | MISO | test point |
| TP2 | MOSI | test point |
| TP3 | CLK | test point |
| TP4 | CS | test point |
| TP5 | 3.3V | test point |
| TP6 | GND | test point |
| Y1,Y2 | 40MHz |