Debugging a 921600 baud USART problem on the ATtiny1614 while porting code from Arduino and megaTinyCore to plain C.

Testing the PICkit 5 with the UCMOD-0, moving from Arduino to plain C with MPLAB, and disappearing down a couple of 8-bit microcontroller rabbit holes.

Software testing the ATtiny1614-based UCMOD-0, configuring its clock and brown-out detection, measuring RS485 bus voltages and sending data to a Raspberry Pi Pico.

Programming and performing the first software tests on the ATtiny1614-based UCMOD-0 using Arduino, megaTinyCore and an UPDI Friend.

Testing the Rev C Isolated RS485 Building Block Board and the first ATtiny1614-based UCMOD-0 microcontroller module.

Sending the first UCMOD microcontroller module and the latest revision of the Isolated RS485 Building Block Board off for manufacture.

Completing communications testing of the Rev A Isolated RS485 Building Block Board and planning a revised eFuse-based input protection circuit for Rev B.

Initial testing of the Rev A Isolated RS485 Building Block Board, including its isolated power supply, reverse-polarity protection, overvoltage protection and RS485 driver outputs.

Designing an isolated RS485 building block board with isolated power, input protection, configurable termination and biasing, and separate logic-side and bus-side grounds.

Planning a new revision of the workshop weather station project, with ideas for ESP32-C3 integration, USB-to-serial, RS485, micro SD logging, exposed SPI and I2C buses, and a small online dashboard demo.