Week 11: Networking and Communications

Documentation for this week is still being written. More details coming soon.

Final Project Experiments

Alongside the networking assignments this week, I also built two new boards to experiment with ideas for my final project.

The first board connects to a Pico W and has two functions: a capacitive touch sensor using the step response method (one pin, one electrode, a voltage step that tells you whether a finger is nearby), and a speaker for audio feedback. The idea is to use touch input to trigger audio as part of the final project interface.

The second board pairs a SAMD11C14A microcontroller with a XIAO ESP32-S3 that has a display and EEG electrodes connected to it. The SAMD11C14A handles low-level signal acquisition while the XIAO ESP32-S3 manages the display and wireless communication.

The two boards communicate with each other over WiFi, the Pico W posting touch and audio state to the XIAO ESP32-S3 and receiving commands back.