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.

Adding a third RS485 node to an EC11 rotary encoder test setup so that the RS485 traffic can be monitored from a PC using a USB serial adapter.

Improving the transmitter and receiver software for an EC11 rotary encoder test setup using RS485, a Digital IO Expander board, Raspberry Pi Pico 2 W boards, and an SH1106 OLED display.

Decoding an EC11 rotary encoder through a Digital IO Expander board, sending direction updates over RS485, and displaying the result on a Raspberry Pi Pico 2 W receiver with an OLED display.

Integration testing the USB-C power input board, RS485 breakout boards, Digital IO Expander board, Raspberry Pi Pico 2W boards, and an EC11 rotary encoder over a 20 m Cat 6 RS485 link.

Testing the simplified RS485 Building Block Board derived from the earlier RS485 and 48 V passthrough design, including baud rate testing over 20 m of Cat 6 cable.

Testing the input side of the Digital I/O Expander building block board, including shift register reads, input-to-output mirroring, and discovering a silkscreen labelling issue.

Receiving and beginning bench testing of the Rev A Digital IO Expander and RS485 building block boards, starting with output testing on the Digital IO Expander using a Raspberry Pi Pico 2W and MicroPython.

Sending the RS485 non-isolated board and revised Digital I/O Expander Board off for fabrication, while also preparing for future USB-C Power Delivery experiments using STM32 Nucleo development boards.