Working on a simple device that can automate watering my plant.
The first version is just simple box that controlling a bunch of valves to control waterflow, quickly learn my mistake that i have to route every wires into that box(at least 2 for power), the bigger your garden, the more wires you use.
Now the current version use Modbus over RS485 so that i can daisy chain the valves, and can extend more valves without compiling new FW.
The master node uses esp32 and the slave node uses the cheapest mcu i can find(Puya py32)
Sometimes i just want a simple device like that, no home assistant or anything, have been bitten in the past.
The first version is just simple box that controlling a bunch of valves to control waterflow, quickly learn my mistake that i have to route every wires into that box(at least 2 for power), the bigger your garden, the more wires you use.
Now the current version use Modbus over RS485 so that i can daisy chain the valves, and can extend more valves without compiling new FW.
The master node uses esp32 and the slave node uses the cheapest mcu i can find(Puya py32)
Sometimes i just want a simple device like that, no home assistant or anything, have been bitten in the past.