Load cell amplifier for Arduino Due

Help & Support Robot Parts
1

Hello my name is Marcel,

I try to set up a circuit with some measurement devices, I want to connect four load cells (0-10kN) with an output signal of 0-10mV to an Arduino Due which works with 3.3V Inputs and Outputs (Correct me if I am wrong). Currently, I am looking for a suitable amplifier board with an adjustable gain factor, but aren’t able to find a suitable one. I came over the Load Cell / Wheatstone Amplifier Shield (2ch) but I am not sure if I could use it properly because it seems that it has to be placed on an Arduino Uno or similar Microcontroller boards.

Hopefully somebody can help me.

Best wishes

Marcel Micheli

3

Hi @Marschl233 and welcome to the forum
you could build your own 4CH amplifier board on a breadboard or prototyping pcb
NE555 or similar analog OP-amplifiers are your best friends…tons of sample circuits you can study and copy for your purpose.
Also you can change (reduce) the analog voltage reference of the Arduino Due by adding a Zener/reference diode to the aref-pin of the Due. I’m afraid, you can’t get as low as 10mV but it can be helpful just in case.