4 layers61 × 85.1 mm
4 layers29.5 × 34.2 mm
Microcouple
georgesleen/microcouple- Size
- 29.5 × 34.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 135
- Nets
- 120
- Pads
- 454
- Tracks, vias
- 930, 205
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Feb 2025
- Updated
- 13 Nov 2025
Overview
Microcouple is an open-source printed circuit board by georgesleen, from the georgesleen/microcouple repository on GitHub, published under the MIT licence. It is a 4-layer board of 29.5 × 34.2 mm with 135 parts on 120 nets, routed with 930 tracks and 205 vias.
It is built around the RP2040, W25Q128JVSIQ and IRM-V838M3-C/TR1, with the MCP73831, USBLC6-2P6-MS and AO3415 among its other parts. Its parts include 69 diodes, 28 capacitors, 15 resistors, 8 ICs and 3 connectors. It belongs with the RP2040 boards of this library.
Main components
7
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
IRM-V838M3-C/TR1
SMD-4P,6.6x3mm-20℃~+85℃ 2.7V~5.5V 20m 320uA 38kHz SMD-4P,6.6x3mm Infrared Remote Receiver (IRM) ROHSEverlight ElectronicsInfrared Remote Receiver (IRM)
MCP73831
UncategorisedMicrochip Technology
USBLC6-2P6-MS
SOT-666SOT-666 ESD and Surge Protection (TVS/ESD) ROHSMSKSEMIUncategorised
AO3415
SOT-23-55℃~+150℃ 1 P-Channel 1.2W 1.45nF 160pF 17.2nC@4.5V 1V 205pF 20V 4A 50mΩ@4.5V P-Channel SOT-23 MOSFETs ROHSGOODWORKMOSFETs
MSK12CO2-BDM
SMD,8x2.8mm-25℃~+70℃ 1.4mm 10,000 Cycles 12V 2.8mm 50mA 8mm Rectangular Columnar SMD(SMT) Tab SPDT Surface Mount, Right Angle White SMD,8x2.8mm Slide Switches ROHSSHOU HANSlide Switches
README
README.mdmicrocouple
Parts
135| Qty | Value | Footprint | References |
|---|---|---|---|
| 65 | Red | GS_Optoelectronics:LED_0402_1005Metric | D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +49 |
| 18 | 100nF | GS_Capacitors:C_0402_1005Metric | C2, C5, C10, C12, C16, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28 +2 |
| 8 | 4.7uF | GS_Capacitors:C_0402_1005Metric | C1, C8, C9, C11, C13, C14, C15, C17 |
| 5 | 5.1k | GS_Resistors:R_0402_1005Metric | R1, R2, R6, R7, R8 |
| 3 | 100k | GS_Resistors:R_0402_1005Metric | R9, R14, R16 |
| 3 | 10k | GS_Resistors:R_0402_1005Metric | R10, R13, R15 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H1, H2, H3 |
| 2 | 1.5k | GS_Resistors:R_0402_1005Metric | R11, R12 |
| 2 | 14pF | GS_Capacitors:C_0402_1005Metric | C3, C4 |
| 2 | Green | GS_Optoelectronics:LED_0402_1005Metric | D1, D4 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 120R @ 100MHz | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | 12MHz 12pF | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | 1k | GS_Resistors:R_0402_1005Metric | R3 |
| 1 | 2.2uH | Inductor_SMD:L_1008_2520Metric | L1 |
| 1 | 330R | GS_Resistors:R_0402_1005Metric | R17 |
| 1 | 40V 1A | Diode_SMD:D_SOD-123 | D2 |
| 1 | AO3415 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | AP63203WU-7 | Package_TO_SOT_SMD:TSOT-23-6 | U4 |
| 1 | Battery_Cell | Connector_PinSocket_1.27mm:PinSocket_2x01_P1.27mm_Vertical | BT1 |
| 1 | CAP1188 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U6 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x03_P1.27mm_Vertical | J4 |
| 1 | Conn_ARM_SWD_TagConnect_TC2030-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
| 1 | IR | GS_Optoelectronics:LED_SMD_L3.0-W2.7-RD | D69 |
| 1 | IRM-V838M3-C/TR1 | GS_Optoelectronics:IRM-V8__M3-C-TR1 | U7 |
| 1 | IS31FL3729 | Package_DFN_QFN:QFN-32-1EP_4x4mm_P0.4mm_EP2.65x2.65mm | U5 |
| 1 | MCP73831 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | MSK12CO2 | GS_Switches:MSK12CO2 | SW2 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | USBLC6-2P6-MS | Package_TO_SOT_SMD:SOT-666 | U1 |
| 1 | USB_C_Socket | GS_Connectors:USB-C-SMD | J2 |
| 1 | W25Q128JVSIQ | GS_SO:SOIC-8_5.3x5.3mm_P1.27mm | U8 |
Questions
How big is the Microcouple PCB?
It measures 29.5 × 34.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Microcouple use?
135 parts, built around the RP2040, W25Q128JVSIQ, IRM-V838M3-C/TR1 and MCP73831. 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 Microcouple KiCad files?
From the georgesleen/microcouple repository on GitHub, at the commit this page was made from: the board is pcb/microcouple.kicad_pcb and its schematic pcb/battery-management.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microcouple design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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