2 layers61 × 50 mm
SlimeVR board
Skaut0071/SlimeVR_Tracker
Cutsom PCB based on SlimeVR project for Full Body Tracking for Virtual Reality without need of expensive base stations.
43 parts1
2 layers201.3 × 67 mm
MidiKeyboard
Skaut0071/MidiKeyboard- Size
- 201.3 × 67 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 161
- Nets
- 110
- Pads
- 669
- Tracks, vias
- 544, 99
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Mar 2026
- Updated
- 5 Apr 2026
Overview
MidiKeyboard is an open-source printed circuit board by Skaut0071, from the Skaut0071/MidiKeyboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 201.3 × 67 mm with 161 parts on 110 nets, routed with 544 tracks and 99 vias.
It is built around the ESP32-C3, TP4056-42-ESOP8 and XC6220B331MR, with the 1N4148W, 1N4007WS and DMP3099L among its other parts. Its parts include 64 diodes, 64 switches, 12 resistors, 11 capacitors and 4 ICs. It belongs with the ESP32 and RISC-V boards of this library.
Main components
7
ESP32-C3
QFN-32-EP(5x5)12bit 160MHz 22 3V~3.6V Others QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (MCU/MPU/SOC)
TP4056-42-ESOP8
ESOP-8-40℃~+85℃ 1 1A 2uA 4.2V 4V~8V Charging IC Lithium Battery Support ESOP-8 Battery Management ROHSTOPPOWERBattery Management
XC6220B331MR
SOT-23-5-40℃~+85℃@(Ta) 1 25uA 3.3V 400mV@(800mA) 5.5V 50dB@(10kHz) 900mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
1N4007WS
SOD-3231.1V@1A 1A 1kV 5uA@1kV Independent SOD-323 Diodes - General Purpose ROHSMDDDiodes - General Purpose
DMP3099L
SOT-23-55℃~+150℃ 1 P-Channel 1.08W 11nC@10V 2.1V 3.8A 30V 41pF 563pF 99mΩ@4.5V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdMidiKeyboard
Kicad project for Midi piano keyboard
How?
- Powered by ESP32C3
- USB or Bluethoot conection
- emulates keyboard sending symbols
- Has 36 white keys and 25 black keys
- Rechargeble battery
- No app requered
Parts
161| Qty | Value | Footprint | References |
|---|---|---|---|
| 62 | 1N4148W | Diode_SMD:D_0402_1005Metric | D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +46 |
| 61 | SW_Push_45deg | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24 +45 |
| 6 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2, C4, C6, C8, C9, C11 |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric | C1, C3, C5, C10 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R8, R12 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2, R11 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R9, R10 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 1 | 1.2k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 1N4007WS | Diode_SMD:D_0402_1005Metric | D2 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C7 |
| 1 | 20k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | Bat | Connector_JST:JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical | J2 |
| 1 | CK_KMS2xxG | Button_Switch_SMD:SW_SPST_CK_KMS2xxGP | SW1 |
| 1 | DMP3099L | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ESP32-C3 | RF_Module:ESP32-C3-WROOM-02 | U1 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_CK_KMS2xxGP | SW66 |
| 1 | SW_Push_45deg | Button_Switch_SMD:SW_SPST_CK_KMS2xxGP | SW63_BL1 |
| 1 | TCA8418RTWR | MidiKey:QFN50P400X400X80-25N | U4 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U3 |
| 1 | USB_C_Receptacle_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J1 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1 |
| 1 | XC6220B331MR | Package_TO_SOT_SMD:SOT-23-5 | U2 |
The 158 most common of 161 parts.
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Questions
How big is the MidiKeyboard PCB?
It measures 201.3 × 67 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MidiKeyboard use?
161 parts, built around the ESP32-C3, TP4056-42-ESOP8, XC6220B331MR and 1N4148W. 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 MidiKeyboard KiCad files?
From the Skaut0071/MidiKeyboard repository on GitHub, at the commit this page was made from: the board is Board/MidiKeyboard.kicad_pcb and its schematic Board/MidiKeyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MidiKeyboard 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).