A simple PCB with a Raspberry Pi Pico and some buttons, LEDs for gaming.
This new version have :
- 1 GPIO expander with a MCP23017 chip (I2C communication with the Pico, with configurable jumpers address)
- 4 rotary encoders with a push button
- 4 push buttons, 1 temporary position (0/1)
- 4 push buttons, 1 fix position (0-1)
- 4 toggle switches, 3 fixes positions (1-0-2)
- 6 LEDs for warnings/alerts
This Raspberry Pi Pico use CircuitPython version 9 with external libraries :
-
Adafruit module CircuitPython_MCP230xx
-
Joystick module CircuitPython_JoystickXL
The schematic and PCB are made with KiCad version 8 (kicad folder).
First V2 prototype 8 x 8 cm only, from AISLER manufacturer :
Some useful plugins for KiCad :
- AISLER Push for KiCad : https://github.com/aislerhq
- Interactive Html Bom : https://github.com/openscopeproject/InteractiveHtmlBom
- Board2Pdf : https://gitlab.com/dennevi/Board2Pdf
- Solarized Dark Theme : https://github.com/pointhi/kicad-color-schemes
Many thanks to @Kochise for his help and tips for the PCB 🍻
The first enclosure prototype made with FreeCad version 1. Work is progress !
-
MultiPicoBoxV2_PCB_test is for testing the PCB with all external components
-
MultiPicoBoxV2_JoystickXL_test is for testing everything like a gamepad 🕹️
Look at the code folder for more details.
Bus I2C :
- https://www.i2c-bus.org
- https://learn.adafruit.com/working-with-i2c-devices?view=all 👌
- https://learn.adafruit.com/circuitpython-basics-i2c-and-spi?view=all
- https://learn.sparkfun.com/tutorials/i2c/i2c-at-the-hardware-level
Microchip GPIO expander MCP23017 :
- https://www.microchip.com/en-us/product/mcp23017
- https://learn.adafruit.com/using-mcp23008-mcp23017-with-circuitpython?view=all 👌
- https://www.woolseyworkshop.com/2021/03/18/adding-digital-io-to-your-arduino-part-3-the-mcp23017/
Rotary encoders :
- https://learn.adafruit.com/rotary-encoder?view=all
- https://howtomechatronics.com/tutorials/arduino/rotary-encoder-works-use-arduino/
- Alps EC11E series : https://tech.alpsalpine.com/e/products/category/encorders/sub/01/series/ec11e/
- Bourns PEC11R series : https://www.bourns.com/products/encoders/contacting-encoders
| Reference | Qty | Value | Footprint | Description |
|---|---|---|---|---|
| C1 | 1 | 10uF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | Unpolarized capacitor, small symbol |
| C2 | 1 | 0.1uF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | Unpolarized capacitor, small symbol |
| D1,D2,D3,D4,D5,D6 | 6 | LED | Light emitting diode | |
| J1,J2,J3,J4 | 4 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | Generic connector, single row, 01x03 |
| J5,J6,J7,J8 | 4 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | Generic connector, single row, 01x05 |
| J9 -> J22 | 14 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | Generic connector, single row, 01x02 |
| J26,J27 | 2 | Conn_01x20_Socket | Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical | Generic connector, single row, 01x20 |
| J28 (I2C) | 1 | Conn_02x03_Top_Bottom | MuliPicoBox_V2:PinHeader_2x03_P2.54mm_Vertical_Re-Order-Pins | Generic connector, double row, 02x03 |
| R1,R2,R3,R4 | 4 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | |
| R5,R6,R7,R8,R9,R10 | 6 | 270 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | |
| R11 -> R18 | 8 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | |
| SW1,SW2,SW3,SW4 | 4 | SW_SPDT_MSM | Switch, single pole double throw, center OFF position | |
| SW5,SW6,SW7,SW8 | 4 | RotaryEncoder_Switch | Rotary encoder, dual channel, incremental quadrate outputs, with switch | |
| SW9,SW10,SW11,SW12 | 4 | SW_Push | Push button switch, generic, two pins | |
| SW13,SW14,SW15,SW16 | 4 | SW_SPST | Single Pole Single Throw (SPST) switch | |
| U1 | 1 | MCP23017_I2C | Package_DIP:DIP-28_W7.62mm | 16-bit I/O expander, I2C, interrupts, w pull-ups, SPDIP-28 |
Big thanks to the Adafruit company, the Python and MicroPython communities. ❤️ Happy coding & have fun ! 🥳