8ch dimmer

• Video posted
• The link to the video added
• This is the 5th Project Log
• The system design documents: schematic - https://github.com/CrazyChip/dimmer/tree/master/schematic , diagram of the design - https://cdn.hackaday.io/images/5952821408308060049.png
• The repository of the Kicad project: https://github.com/CrazyChip/dimmer
• Licenses - everything under GPLv3

You can see the two channels in action with two halogen lamps. 

Works:

• dimming control with analog inputs

Problems:

• no temperature control
• unable to fit in DIN box

Unfinished:

• Modbus

The prototype is ready for testing:

https://cdn.hackaday.io/images/3407571408536593184.png

The original Zero Crossing Detector developed:

https://cdn.hackaday.io/images/5109501408535937213.jpg

The resistors limit a current and the diodes limit a voltage from the bridge. RC output filter reduces the noise from mains. Both outputs from RC filters must be connected to Atmega's comparator. Such schematic uses two pins of Atmega.

I commited schematic, Kicad project and gerbers to Github. Block diagram created with Google docs. Looks good with transparent background ;)