Using an ESP32, relays, a water pump and a TDS sensor to monitor an hydroponics tower
It's a work in progress and will be updated regularly with more documentation on how to set it up.
1x Lolin32 https://www.aliexpress.com/item/4000340140634.html
1x keyestudio TDS Meter https://www.aliexpress.com/item/33050818416.html
1x MOSFET D4184 modules https://www.aliexpress.com/item/33038728761.html
1x temperature sensor https://www.aliexpress.com/item/4000048728075.html
1x submersible pump 12V 280L/h JT-1020 https://www.aliexpress.com/item/32676666232.html
Optional: A battery and a solar panel.
The tower I'm using can be 3D printed from these files here:
https://www.thingiverse.com/thing:3405964
Currently my tower is still small as I'm testing the viability first.
Tower is connected to a 100W solar panel connected to a battery.
I also designed a small system to start your seedlings directly into the standard pots of the original project: