Note: Puck.js has one available I2C, SPI and USART (and infinite software SPI and I2C). Unlike STM32-based Espruino boards, these peripherals can be used on any pin. Information There's an API reference here Circuit Diagram (v1) Circuit Diagram (v2) Board Layout (v1) Eagle CAD files (v1) 3D Case design files nRF52832 Datasheet MDBT42 Datasheet Certifications: Puck.js 1/2 CE certification Puck.js 1