Coil Winder
About the Coil Winder PCB
Coil Winder is an open source AVR/Arduino PCB design by bmgxyz, published on GitHub. It is a 2-layer board measuring 48 × 48 mm, with 7 components from 7 distinct parts.
Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the Pololu_Breakout_A4988. By type, the board carries 3 modules, 2 switches, 1 connector and 1 capacitor.
From the project
A machine that presses piano keys to make music
Main components on the Coil Winder
Coil Winder bill of materials (BOM)
7 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Arduino_Nano_v3.x | Arduino_Nano | A1 |
| 1 | Pololu_Breakout_A4988 | Pololu_Breakout-16_15.2x20.3mm | A2 |
| 1 | Stepper_Motor_bipolar | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical_Double | M1 |
| 1 | Conn_01x02_Socket | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | Forward | SW_PUSH_6mm | SW1 |
| 1 | Backward | SW_PUSH_6mm | SW2 |
| 1 | 100u | CP_Radial_D5.0mm_P2.50mm | C1 |
Coil Winder design files
The KiCad project lives in the bmgxyz/self-playing-piano repository on GitHub; these links point at the commit this page was built from.
Coil Winder: common questions
What microcontroller does the Coil Winder use?
The Coil Winder is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.
How big is the Coil Winder PCB?
The Coil Winder measures 48 × 48 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Coil Winder?
7 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Coil Winder design files?
From the bmgxyz/self-playing-piano repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Coil Winder design in my own project?
The repository has no license, so all rights stay with bmgxyz. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Coil Winder without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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