lanyonconrad/liboard

liboard

This repository contains the hardware and firmware files for the liboard. For the app that connects the liboard to lichess see limin.

PCB

Single layer pcb designed with DesignSpark PCB.

Features:

• Microchip BM71 bluetooth module
• TI MSP430 microcontroller (Spi-By-Wire pins are available on the usb port for programming)
• Battery Management
• 3.3V LDO Voltage Regulator
• 81 Reverse Mount LEDs
• 3 8-bit shift registers
• 1 8:1 MUX
• Over 80 0-ohm resistor jumpers due to the single layer constraint...

Firmware

Code is written in C, compiled with msp430 GCC, and programmed to chip with MSPDebug using the MSP430G2 LaunchPad (MSP-EXP430G2).

Todo

Add full bill of materials

Assembly

This PCB is essentially one side of a membrane switch panel. A base with 8 conductive strips must be attached appropriately.