4 layers127.5 × 51.5 mm
EMIsniffer
evabits/EMI_sniffer_beursgadget_WOTS_2026
Schematics. Layout and Firmware of the WOTS2026 beursgadget.
174 parts7MIT
2 layers108 × 97.4 mm
Esp32-midi processor
andymann/esp32-midi-processor-pcb1- Size
- 108 × 97.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 76
- Pads
- 203
- Tracks, vias
- 568, 93
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Sep 2025
- Updated
- 4 Jan 2026
Overview
Esp32-midi processor is an open-source printed circuit board by andymann, from the andymann/esp32-midi-processor-pcb repository on GitHub. It is a 2-layer board of 108 × 97.4 mm with 51 parts on 76 nets, routed with 568 tracks and 93 vias.
It is built around the WS2812B and 1N4148WT. Its parts include 16 resistors, 12 connectors, 7 capacitors, 7 diodes and 5 switches. It belongs with the audio and music boards and the ESP32 boards of this library.
Main components
2README
README.mdesp32-midi-processor
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1µ | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C6, C7 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R12, R13, R14, R15, R16 |
| 5 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D3, D4, D5, D6, D7 |
| 4 | SW_Push | Button_Switch_THT:SW_PUSH-12mm_Wuerth-430476085716 | SW1, SW2, SW3, SW4 |
| 2 | 10 | Resistor_SMD:R_0603_1608Metric | R8, R10 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 1N4148WT | Diode_SMD:D_SOD-523 | D1, D2 |
| 2 | 220 | Resistor_SMD:R_0603_1608Metric | R1, R4 |
| 2 | 33 | Resistor_SMD:R_0603_1608Metric | R7, R9 |
| 2 | 470 | Resistor_SMD:R_0603_1608Metric | R2, R5 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric | R3, R6 |
| 2 | 6N138 | Package_SO:SOP-8_6.605x9.655mm_P2.54mm | U1, U2 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | Cut trace on Shield when bridged | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | Display | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J12 |
| 1 | ESP32 left | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J6 |
| 1 | ESP32 right | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J5 |
| 1 | Input Voltage | TerminalBlock_RND:TerminalBlock_RND_205-00001_1x02_P5.00mm_Horizontal | J7 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U3 |
| 1 | Midi IN 1 | Connector_Audio:Jack_3.5mm_CUI_SJ-3523-SMT_Horizontal | J1 |
| 1 | Midi IN 2 | Connector_Audio:Jack_3.5mm_CUI_SJ-3523-SMT_Horizontal | J2 |
| 1 | Midi OUT 1 | Connector_Audio:Jack_3.5mm_CUI_SJ-3523-SMT_Horizontal | J3 |
| 1 | Midi OUT 2 | Connector_Audio:Jack_3.5mm_CUI_SJ-3523-SMT_Horizontal | J4 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW5 |
| 1 | Spare | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J13 |
| 1 | USB Shield inner right | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J9 |
| 1 | USB Shield left | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J10 |
| 1 | USB Shield outer right | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J8 |
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Questions
How big is the Esp32-midi processor PCB?
It measures 108 × 97.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Esp32-midi processor use?
51 parts, built around the WS2812B and 1N4148WT. 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 Esp32-midi processor KiCad files?
From the andymann/esp32-midi-processor-pcb repository on GitHub, at the commit this page was made from: the board is esp32-midi-processor/esp32-midi-processor.kicad_pcb and its schematic esp32-midi-processor/esp32-midi-processor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32-midi processor design in my own project?
Its repository states no licence, so its author keeps all rights: ask andymann before reusing the design.