A universal power block based on triac. In essence this is a solid state relay that can be augmented with some bells and whistles.
Bells and whistles:
- Attiyny44 MCU on board
- I2C interface
- Optional filtering
- Optional snubber network
- maximum power - 6kW
- zero crossing detection
- firmware supprots linear output power control
- phase shift dimmer mode
- switch at zero-crossing mode
- “low level” zero-crossing signal output
- “low level” triac trigger signal input
- 4 spare MCU pins available for additional features
- open source hardware and firmware
More info available at: http://wemakethings.net/2013/10/27/triac-bloc/