2 layers134 × 88 mm
Tulipcc
shorepine/tulipcc
The Tulip Creative Computer and AMYboard - portable Python synthesizers
103 parts978
2 layers200 × 160 mm
Polykit x controlboard
polykit/polykit-x-controlboard3Control board schematics and PCB for my polyphonic synthesizer
- Size
- 200 × 160 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 155
- Nets
- 57
- Pads
- 280
- Tracks, vias
- 522, 51
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 7 Feb 2024
- Updated
- 9 May 2025
Overview
Polykit x controlboard is an open-source printed circuit board by polykit, from the polykit/polykit-x-controlboard repository on GitHub. It is a 2-layer board of 200 × 160 mm with 155 parts on 57 nets, routed with 522 tracks and 51 vias.
It is built around the 1N4148WS. Its parts include 34 resistors, 22 switches, 4 diodes, 4 connectors and 2 capacitors. It belongs with the audio and music boards of this library.
Main components
1README
README.mdPolykit X8 Controlboard
THIS IS NOT A FINISHED PRODUCT IN ANY WAY AND STILL UNDER HEAVY DEVELOPMENT - USE AT YOUR OWN RISK!
This repository contains Kicad schematics and PCB layout of a control board for a polyphonic synthesizer.
There is a video playlist on the design process https://makertube.net/w/p/3N2fRjXwT2SfAUv2VkMy3e
Related repositories:
- Voice Card: https://github.com/polykit/polykit-x-voice-card
- Main Board: https://github.com/polykit/polykit-x-mainboard
- Input Board: soon
- Software: soon
- Power Supply: https://github.com/polykit/eurorack-psu
BOM
| Reference | Value | Footprint | Comment | Qty |
|---|---|---|---|---|
| C1, C2 | 100n | Capacitor_SMD:C_1206_3216Metric | 2 | |
| D1-D4 | 1N4148WS | Diode_SMD:D_SOD-323 | 4 | |
| J1 | MCU_BOARD | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | optional, when used as MIDI controller | 1 |
| J2 | X8_I2C_POWER | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | 1 | |
| J3 | X8_EXT_DIGITAL | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | 1 | |
| J4 | DISPLAY | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | 1 | |
| R1-R34 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | 34 | |
| SW1-SW6 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H13mm | 6 | |
| SW7-SW22 | RotaryEncoder | Rotary_Encoder:RotaryEncoder_Bourns_Vertical_PEC12R-3xxxF-Nxxxx | without switch | 16 |
| U1, U2 | MCP23017_SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | 2 |
References
https://www.ti.com/lit/an/slva704/slva704.pdf
https://github.com/horfee/kicad-packages3D/tree/master/Rotary_Encoder.3dshapes
Parts
155| Qty | Value | Footprint | References |
|---|---|---|---|
| 84 | LOGO | Polykit:star-silk-tiny | G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** +68 |
| 34 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +18 |
| 16 | RotaryEncoder | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm | SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22 |
| 6 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H13mm | SW1, SW2, SW3, SW4, SW5, SW6 |
| 4 | 1N4148WS | Diode_SMD:D_SOD-323 | D1, D2, D3, D4 |
| 2 | 100n | Capacitor_SMD:C_1206_3216Metric | C1, C2 |
| 2 | MCP23017_SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U1, U2 |
| 1 | DISPLAY | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | LOGO | Polykit:bär | G*** |
| 1 | LOGO | Polykit:logo-3.5cm | G*** |
| 1 | LOGO | LOGO | G*** |
| 1 | MCU_BOARD | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | J1 |
| 1 | X8_EXT_DIGITAL | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J3 |
| 1 | X8_I2C_POWER | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J2 |
Questions
How big is the Polykit x controlboard PCB?
It measures 200 × 160 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Polykit x controlboard use?
155 parts, built around the 1N4148WS. 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 Polykit x controlboard KiCad files?
From the polykit/polykit-x-controlboard repository on GitHub, at the commit this page was made from: the board is polykit-x-controlboard.kicad_pcb and its schematic io.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Polykit x controlboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask polykit before reusing the design.
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