I am currently finishing my PhD thesis in experimental physics, focusing on quantum nanoelectronics. I have extensive experience programming Arduino boards, including using their PID library. I have also written digital PID algorithms from scratch, and can do so for you if this is for any reason necessary.
I am an expert in PID control. Over the past six years I have assembled, maintained, and operated four scientific quality cryostats whose temperature control systems included over twenty independent thermometers and heaters, each of which was controlled with a PID loop. I can tune the PID parameters to optimize settling time and minimize oscillations for your particular application.
I'm new on this site, so I'm offering a competitive price in hopes of building an excellent reputation.