Open Source Projects
Hardware kits and open-source firmware for AC power control — built with the community, for the community.
ACRouter — Smart AC Power Router
An open-source solar energy diverter and AC load controller built on RBDimmer hardware. Inspired by the DIY solar router community — redesigned with extended capabilities, remote control, and Home Assistant integration.
- ✓ Solar energy diversion — send excess PV power to water heater or load
- ✓ Home Assistant integration via MQTT or ESPHome
- ✓ Open-source firmware — ESP32-based, fully customisable
- ✓ Available as a ready hardware kit
ESP32
Core controller
MQTT
Home Assistant ready
AC
Dimmer-based control
OSS
Open source
More Projects Coming
We're building open-source versions of popular community projects — with more features, better hardware, and full documentation.
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Reflow Oven Controller
Precise temperature control for PCB soldering with customisable reflow profiles.
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Coffee Roaster
DIY drum roaster with AC dimmer control and real-time temperature curves.
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Temperature Controller
Universal PID-based AC temperature controller for kilns, incubators, and heating systems.
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Floor Heating Control
Smart thermostat replacement with zone control and Home Assistant integration.
From the Project Blog
Community builds and project walkthroughs