This is a replacement for the commercial PID unit he used on the original build. That monitored the temperature in the smoker, using predictive algorithms to maintain just the right heat level.

PID temperature control 4 Articles See A Cheap Smoker Get An Automation Power Up September 24, 2016 by Donald Papp 11 Comments ...

The PID controller can be remotely controlled by a programmable logic controller (PLC). According to the company, hundreds of different brands of I/O sensors, outputs, relays, and PLCs can be ...

Significant research work has been carried out to improve the performance of closed loop response with PID controller so that it can be used for real time temperature control system using SCADA ...

The result is an extremely capable yet simple control architecture suitable for a wide range of applications. Since the standard PID control algorithm is far from ideal for many types of controls, ...