2 layers40 × 79.6 mm
ESP32 Transmitter and Receiver
hackclub/OnBoard
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48 parts915
2 layers304.7 × 113.6 mm
Synth pcb
goallthepath/synthThe TouchedOut Polysynth is a polyphonic capacitive touch synth on a PCB, using the Daisy Seed. Two Adafruit MPR121 capacitive touch modules are used for keys and buttons.
- Size
- 304.7 × 113.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 80
- Pads
- 181
- Tracks, vias
- 284, 28
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Feb 2026
- Updated
- 12 Feb 2026
Overview
Synth pcb is an open-source printed circuit board by goallthepath, from the goallthepath/synth repository on GitHub, published under the MIT licence. It is a 2-layer board of 304.7 × 113.6 mm with 48 parts on 80 nets, routed with 284 tracks and 28 vias.
Its parts include 5 connectors, 3 resistors, 3 switches and 1 diode. It belongs with the audio and music boards of this library.
README
README.mdTouchedOut PolySynth
The TouchedOut Polysynth is a polyphonic capacitive touch synth on a PCB, using the Daisy Seed. Two Adafruit MPR121 capacitive touch modules are used for keys and buttons. The firmware was designed and built using Arduino IDE with DaisyDuino. See Electrosmith's tutorials for setting up the DaisyDuino environment with Arduino IDE. This repo also includes the KiCad schematic and pcb files for ordering your own from a PCB manufacturer (JLCPcb gerbers provided).
Follow this tutorial to set up DaisyDuino in Arduino IDE: How to Add Daisy Support to Arduino IDE
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | ~ | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | Pad0, Pad1, Pad2, Pad10, Pad11, Pad12, Pad13, Pad14, Pad15, Pad16, Pad17, Pad18, Pad19, Pad20, Pad21, Pad22 +8 |
| 5 | 10K | CustomFootprints:Potentiometer_Bourns_PRS11R | POT5, POT6, POT7, POT8, POT9 |
| 4 | 10K | Adafruit:Slide_Potentiometer_35mm | POT1, POT2, POT3, POT4 |
| 3 | SW_SPDT | Toggle_SPDT:SW_Toggle_SPDT_lugs | SW1, SW2, SW3 |
| 2 | Adafruit MPR121 Breakout | Adafruit:Adafruit_MPR121 | A1, A2 |
| 1 | 10K | Adafruit:Adafruit_2ax_joystick | Joystick1 |
| 1 | 10R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R18 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 33R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R19 |
| 1 | Audio Jack | Adafruit:Audio_TRRS-PJ-320A | J2 |
| 1 | Barrel_Jack_Switch | CustomFootprints:Generic_PowerJack | J1 |
| 1 | Conn_01x20_Socket | CustomFootprints:PinSocket1x20_P2.54mm_Vertical_JLCPCB | J4 |
| 1 | Conn_01x20_Socket | CustomFootprints2:PinSocket1x20_P2.54mm_Vertical_JLCPCB | J5 |
| 1 | LED_1 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | LED1 |
| 1 | MIDI OUT JACK | Adafruit:Audio_TRRS-PJ-320A | J3 |
Questions
How big is the Synth pcb PCB?
It measures 304.7 × 113.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Synth pcb use?
48 parts. 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 Synth pcb KiCad files?
From the goallthepath/synth repository on GitHub, at the commit this page was made from: the board is pcb/synth_pcb.kicad_pcb and its schematic pcb/synth_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Synth pcb 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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