CHA, CAN-Bus based reliable Home Automation

CAN-Bus based home automation system.

This product is in development.
Planned features include:

• node feedback. Your bulbs tell you when they burn out.
• simple message structure, with 1 (one) msg per switching or sensing unit.
• flexible hardware design to keep the number of minimum node types to a minimum.
• out of the box dimming/switching capabilities of up to 2kw.
• binary switcher maintains state even through power loss.
• simple update possibilities. run firmware update for multiple nodes at the same time.

The project currently consists of 4 node types.

2kw binary actuator.

A CAN-Bus node with a bipolar relay for switching capabilities up to 2kw.
The device includes a crude current sensor for feedback, indicating weather the load is drawing current.
This device is designed to be installed in a wall socket, distribution box, or lighting fixture.

2kw dimmer.

A CAN-Bus node with ZCD, and triac for a maximum of 2kw.
With the same form factor as the 2kw binary actuator, it fits into almost any lighting fixtures imaginable.

4 unit switch.

A CAN-Bus node with up to 4 pairs of pushbuttons and leds.
Each pair of pushbuttons represents a switching element. The buttons are arranged vertically. Tapping the top or bottom button sends the ON 100% or OFF 100% command respectively. Pushing and holding the top or bottom button sends the DIM UP or DIM DOWN command respectively. Releasing the button send the STOP DIMMING command.
Up to 4 switches per node, with an additional 4 using a small expansion board.

Master control unit.

This device is a laptop or mini-server running Linux and Apache for easy administration of the house bus from a web interface. The device supports timed commands, and complicated control logic.