This project sounds simple from the ground up but has me stuck being thrown in halfway i.e. with an already written complex sketch (attached).
We have a vessel which has liquid in which we want to monitor (temp and pH) over time. The vessel currently has:
a) A heat jacket- which wraps around the vessel which the user can set the temperature of using buttons on the front a “control box” – which gets feedback from b) the NTC probe
b) NTC (Temperature probe) – which measures the temperature of the liquid in the vessel and currently outputs to an LCD screen (and provides feedback for the heat jacket to turn on/off)
c) pH probe – which measures the pH of the liquid in the vessel and which can be calibrated using the buttons on the front and currently outputs to an LCD screen. (and provides input for a pump to pump acid/base into the vessel to turn on/off)
All this is working fine…
All I need to do is data log the pH and temperature of the liquid over time (every 30sec or so- using a RTC3231) onto an SD card shield.
Im also not sure if an Uno will have all the necessary I/O for this.
It sounds simple! But dont know what code to put in where, and frankly what extra wires to put in where… This is where I shout HELP! HELP, please!
BRcurrent.ino (25 KB)