HeaterMeter is a system for monitoring or control of BBQ smokers and grills in both standalone and Raspberry Pi integrated web-based automation.

Version 4.2 builds on the successful 4.0 platform and adds

• Step-down converter for pure voltage output to blower (PWM also software selectable)
• Integrated servo damper control
• Low-pass filtering on probe inputs for improved noise rejection and accuracy
• Optional thermocouple pit probe support (requires SMD soldering)

HeaterMeter is open source hardware!  Documentation, schematics, and more are available