Different programmable logic controllers (PLCs) handle PID control loops in ... to the controlled device-a heating element in this example-in the form of a 4-20 mA or 0-10 VDC signal. As the control ...

The dual-channel PID controller was originally meant as a humidity and temperature controller and was based on existing software for an ATmega328. But after years of tinkering, adding new features ...

The problem is that it takes time for the heat generated in the slow cooker’s heating element to reach ... [Aaron] instead created a PID controller that uses temperature feedback over time ...