How to use the system:

• The network name and password are in the net_config.txt file.
• The IP address to point your browser to is displayed as the system boots, assuming a display is attached.
• The web connection is http, not https.
• Changes to configuration can be done by editing the timer_config.txt configuration file, or by using the web interface.
• The changes made via web also are saved and will persist after a power cycle.
• Each cable must connect an A outlet to a B outlet.
  • This is to accomodate the TX/RX crossover
• There should be 1 A port and 1 B port left disconnected when complete.
  • This is because all messages are forwarded, and it would create an infinite loop.
• The order of modules is gererally unimportant, but the 5VDC should only be injected at one point.
• The core processor is a Pi Pico W. All other modules can be normal Pico microcontrollers.

Technical details

• Each module has a Pi Pico in it. The wiring details are in the pin_connection.html file.
• The entire system runs on a message bususing UART over CAT-5.
• This is using the microdot and utemplate frameworks for simpler web serving and easier maintenance.
• As this is all Micropython, very little effort would be required (changing pin numbers) to port this to other microcontrollers.