

Master PCB
- Size
- 90 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 64
- Pads
- 219
- Tracks, vias
- 159, 9
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Jan 2025
- Updated
- 3 Jan 2025
Overview
Master PCB is an open-source printed circuit board by Metalstream-Org, from the Metalstream-Org/Master-PCB repository on GitHub. It is a 2-layer board of 90 × 100 mm with 49 parts on 64 nets, routed with 159 tracks and 9 vias.
It is built around the ESP32-S3-DEVKITC-1-N8, LM324 and BAT54J. Its parts include 25 resistors, 10 connectors, 3 ICs, 3 diodes and 2 capacitors. It belongs with the ESP32 boards of this library.
Main components
3ESP32-S3-DEVKITC-1-N8
-- WiFi Modules ROHSEspressif SystemsWiFi ModulesLM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational AmplifierBAT54J
SOD-323F1 Independent 200mA 2uA@25V 30V 600mA 800mV@100mA SOD-323F Schottky Diodes ROHSNexperiaSchottky Diodes
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 2k2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 8 | 5k6 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18, R19, R20, R21, R22, R23, R24, R25 |
| 8 | RJ12 | Connector_Molex:950097667 | J2, J3, J4, J5, J6, J7, J8, J9 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopBottom | H1, H2, H3, H4 |
| 2 | 100 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | BAT54J | Diode_SMD:D_SOD-323F | D1, D2 |
| 2 | LM324 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U2, U3 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17 |
| 1 | ESP32-S3-DevKitC | PCM_Espressif:ESP32-S3-DevKitC | U1 |
| 1 | Jack-DC | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D3 |
| 1 | LOGO | MetalStream:MetalStream_Full_Logo_22.1x7.5mm_Silkcreen | G*** |
| 1 | MCF0805B0R50FSTR | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F1 |
| 1 | USB_B | Connector_Molex:Molex-67068-7041-MFG | J10 |
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Questions
How big is the Master PCB PCB?
It measures 90 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Master PCB use?
49 parts, built around the ESP32-S3-DEVKITC-1-N8, LM324 and BAT54J. 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 Master PCB KiCad files?
From the Metalstream-Org/Master-PCB repository on GitHub, at the commit this page was made from: the board is master_pcb.kicad_pcb and its schematic master_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Master PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask Metalstream-Org before reusing the design.