4 layers119 × 63.2 mm
OpenChordM1
FugLong/OpenChord
An open-source music device for portable, expressive, and extensible audio creation.
75 parts3MIT
4 layers100.8 × 84 mm
Macropad
stebit/macropad- Size
- 100.8 × 84 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 79
- Nets
- 79
- Pads
- 274
- Tracks, vias
- 511, 74
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Jun 2025
- Updated
- 29 Jun 2025
Overview
Macropad is an open-source printed circuit board by stebit, from the stebit/macropad repository on GitHub. It is a 4-layer board of 100.8 × 84 mm with 79 parts on 79 nets, routed with 511 tracks and 74 vias.
It is built around the RP2040, W25Q32JVSSIQ and SPX3819M5-L-3-3, with the USBLC6-2SC6 and ABM8-272-T3 among its other parts. Its parts include 18 capacitors, 17 switches, 16 diodes, 11 resistors and 4 ICs. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
5
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q32JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 133MHz 1uA 2.7V~3.6V 20 Years 32Mbit 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
SPX3819M5-L-3-3
SOT-23-5-40℃~+85℃@(Ta) 1 20V 3.3V 420mV@(100mA) 500mA 5uA 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | D_Schottky | Diode_SMD:D_SOD-123 | D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 12 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C5, C7, C8, C9, C10, C11, C12, C15, C17 |
| 12 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_Plate | SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14 |
| 8 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad | H1, H2, H3, H4, H5, H6, H7, H8 |
| 3 | 0 | Resistor_SMD:R_0603_1608Metric | R3, R4, R5 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R6, R8, R11 |
| 3 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW15, SW16, SW17 |
| 2 | 10u | Capacitor_SMD:C_0603_1608Metric | C16, C18 |
| 2 | 15p | Capacitor_SMD:C_0603_1608Metric | C13, C14 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C4, C6 |
| 2 | 27.4 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | MountingHole | MountingHole:ToolingHole_1.152mm | H9, H10 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | Reset | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | SPX3819M5-L-3-3 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J2 |
| 1 | W25Q32JVSS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U2 |
Questions
How big is the Macropad PCB?
It measures 100.8 × 84 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Macropad use?
79 parts, built around the RP2040, W25Q32JVSSIQ, SPX3819M5-L-3-3 and USBLC6-2SC6. 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 Macropad KiCad files?
From the stebit/macropad repository on GitHub, at the commit this page was made from: the board is macropad/macropad.kicad_pcb and its schematic macropad/input.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Macropad design in my own project?
Its repository states no licence, so its author keeps all rights: ask stebit before reusing the design.
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