4 layers45 × 38 mm
MerlynCAM
YeetTheAnson/MerlynCAM
An action camera that records at 1080p@90, 1440p@60 and 4k@20 (With I2S microphone and gyro logging @ 150Hz)
150 parts1
2 layers100 × 80 mm
Pcb design
piyush3i2/Custom-Dev-BoardThis project focuses on designing and building a custom development board that combines the strengths of the Raspberry Pi RP2040 microcontroller and an Espressif Systems ESP32 Wi-Fi/Bluetooth module on a single PCB. The goal is to create a compact, flexible, and cost-effective devboard suitable for IoT, embedded systems.
- Size
- 100 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 125
- Nets
- 174
- Pads
- 550
- Tracks, vias
- 135, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Jan 2026
- Updated
- 10 Jan 2026
Overview
Pcb design is an open-source printed circuit board by piyush3i2, from the piyush3i2/Custom-Dev-Board repository on GitHub. It is a 2-layer board of 100 × 80 mm with 125 parts on 174 nets, routed with 135 tracks and 0 vias.
It is built around the RP2040, W25Q128JVSIQ and INMP441. Its parts include 65 diodes, 27 capacitors, 18 resistors, 6 ICs and 4 connectors. It belongs with the microcontroller boards and radio and wireless boards and the ESP32 and RP2040 boards of this library.
Main components
3
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
INMP441
SMD-960Hz~15kHz SMD-9 MEMS Microphones ROHSTDK InvenSenseMEMS Microphones
README
README.mdCustom-Dev-Board
This project focuses on designing and building a custom development board that combines the strengths of the Raspberry Pi RP2040 microcontroller and an Espressif Systems ESP32 Wi-Fi/Bluetooth module on a single PCB. The goal is to create a compact, flexible, and cost-effective devboard suitable for IoT, embedded systems.
Parts
125| Qty | Value | Footprint | References |
|---|---|---|---|
| 65 | LED | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +49 |
| 14 | 0.1uf | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8, C10, C11, C18, C22, C23, C27 |
| 5 | 10uf | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C13, C14, C19, C20, C21 |
| 4 | 5.1K | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R1, R2, R12, R13 |
| 3 | 10K | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R14, R15, R17 |
| 3 | 10k | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R8, R9, R10 |
| 3 | 1uf | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C9, C12, C26 |
| 3 | SW_Push | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | SW1, SW2, SW3 |
| 2 | 1nf | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C24, C25 |
| 2 | 27 | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R3, R4 |
| 2 | 33pf | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C15, C16 |
| 2 | Conn_01x20_Socket | Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical | J2, J3 |
| 2 | MCP1700x-330xxTT | Package_TO_SOT_SMD:SOT-23 | U2, U6 |
| 2 | R | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R6, R7 |
| 1 | 100k | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R18 |
| 1 | 1k | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R5 |
| 1 | 75 | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R16 |
| 1 | 9.53K | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R11 |
| 1 | C | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C17 |
| 1 | Conn_01x03_Socket | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J4 |
| 1 | Conn_01x14_Socket | Connector_PinSocket_2.54mm:PinSocket_1x14_P2.54mm_Vertical | J5 |
| 1 | Crystal_12MHz | Crystal:Crystal_DS10_D1.0mm_L4.3mm_Horizontal_1EP_style1 | Y1 |
| 1 | ESP32-S3-WROOM-2 | RF_Module:ESP32-S3-WROOM-2 | U4 |
| 1 | INMP441 | INMP441:MIC_INMP441 | MK1 |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U7 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
Questions
How big is the Pcb design PCB?
It measures 100 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pcb design use?
125 parts, built around the RP2040, W25Q128JVSIQ and INMP441. 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 Pcb design KiCad files?
From the piyush3i2/Custom-Dev-Board repository on GitHub, at the commit this page was made from: the board is Pcb_design/PCB.kicad_pcb and its schematic Pcb_design/PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcb design design in my own project?
Its repository states no licence, so its author keeps all rights: ask piyush3i2 before reusing the design.
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