How do you properly connect the Arduino-based potentiostat to a DIY three-electrode electrochemical cell (working, counter, and reference electrodes)?
I wasn’t able to find a local supplier for ready-made electrochemical cells in my area, so I’ll need to make my own. Has anyone here done this before? If yes, I would really appreciate any advice or step-by-step guidance on how you built and connected yours.
Hi @jamesco. Are you working on this project with @ayaaashi? I ask because they asked about the same subject only yesterday:
If you are working together, please coordinate your use of Arduino Forum. If you both create redundant posts here requesting assistance, that can waste the time of the forum helpers, and it will also waste your time.
I don't see that schematic in that paper, where did you get it from?
The bit on the very left side showing a PC USB being connected to pins 0 and 1 is not how to connect the Arduino to a PC. The PC needs to be connected to the USB Socket on the Arduino.
The operation amplifiers require what's called a split supply. That is a three pin power supply with +5V, Ground, and -5V. That schematic has a mixture +/- 6.5V and a -5V. There is a technical name for that, we call it rubbish, or to be more polite un-rationilised .
I also notice that the operational amplifiers have no part numbers on them.
So get a proper circuit would be my first advice on how to make this.
