Arduino PH & EC Meter for hydroponics and gardening Using an Arduino NANO or just about any Arduino you can create a very accurate PH & EC/TDS meter for hydroponic and gardening. Connect your Arduino ...

However, I'm using an Arduino Uno R4 which uses the new 32bit ARM arch, so this code did not port well. I've re-written it to be compaitble with the Uno R4 and moved some stuff to the arduino language ...

A lot of people have used ESP8266 to add inexpensive WiFi connectivity to their projects, but [Oscar] decided to take it one step further and program an Arduino over WiFi with the ESP8266. [Oscar] … ...