Return to Question

--- Later edit --- Built the schematic, you can see it in action on youtube http://www.youtube.com/watch?v=BmsdXMbd2vo

• one side has the 220v mains coming in
• one side has the push buttons that work on 220v
• one side has the output to the light bulb The 220v is an on/off relay. Each time any button is pushed, it toggles it's state, as long as you press a button more than 0.1 seconds (so it said in the relay manual).

My electrician installed the 220v relay, it is not 'normally open' or 'normally closed'. If powers goes down and then comes back the lights return to their previous states.

As for pricing I am sourcing arduino+ethernet or mega+ethernet (and a few other arduino replicas) at around 15-25$ per pair, so the cost is relatively low. In the main controller software I estimate 40 hours of work, and then a few hundreds of hours over a few years refining the user interface and adding events and so on.

• one side has the 220v mains coming in
• one side has the push buttons that work on 220v
• one side has the output to the light bulb

The 220v is an on/off relay. Each time any button is pushed, it toggles it's state, as long as you press a button more than 0.1 seconds (so it said in the relay manual).

My electrician installed the 220v relay, it is not 'normally open' or 'normally closed'. If powers goes down and then comes back the lights return to their previous states.

As for pricing I am sourcing arduino+ethernet or mega+ethernet (and a few other arduino replicas) at around 15-25$ per pair, so the cost is relatively low. In the main controller software I estimate 40 hours of work, and then a few hundreds of hours over a few years refining the user interface and adding events and so on.

All the items will be placed in 2 boxes inside the house, one for each floor, and a third box will be controlling the garden,patio and watering.

• one side has the 220v mains coming in
• one side has the push buttons that work on 220v
• one side has the output to the light bulb The 220v is an on/off relay. Each time any button is pushed, it toggles it's state.

To trigger the 220v mains relay all i have to do is use a normally-open arduino-relay and trigger the closed state for more than 0.1 seconds. I just need to send a 220v "pulse" to the 220v relay.

• one side has the 220v mains coming in
• one side has the push buttons that work on 220v
• one side has the output to the light bulb The 220v is an on/off relay. Each time any button is pushed, it toggles it's state, as long as you press a button more than 0.1 seconds (so it said in the relay manual).

My electrician installed the 220v relay, it is not 'normally open' or 'normally closed'. If powers goes down and then comes back the lights return to their previous states.

To trigger the 220v mains relay all i have to do is use a normally-open arduino-relay and trigger the closed state for more than 0.1 seconds. I just need to send a 220v "pulse" to the 220v relay. This is the main reason that the lights will still work as long as power is kepy. All the arduino can fail and the normal lights will work as usual, I will only lose the remote-controll posibility and advanced scheduling/scripting.

As for pricing I am sourcing arduino+ethernet or mega+ethernet (and a few other arduino replicas) at around 15-25$ per pair, so the cost is relatively low. In the main controller software I estimate 40 hours of work, and then a few hundreds of hours over a few years refining the user interface and adding events and so on.