Mushroom Environment Control - Arduino Powered

Step 6 Mains Relays and connection to Powerboard

***MAINS WIRING HERE SO BE CAREFUL***

Solder the four Mains relays to some Veraboard. 
My relays had marked on them "+" "-" and two load pins. The - pins are connected to Arduino ground, each + is connected to the arduino digital pins 3, 11 ,12 ,13. 
The load is what switches the mains active signal, and I used this to switch each individual active within the powerboard.

Opening up the power board I removed the copper strip connecting the actives, and cut them into four separate peices. Soldered onto each peice was one of four wires which were soldered back onto one of the load pins of each of the relays. 
The active wire from the mains was then connected to the other load on the relay. 

I put hot glue where normally the gromit would go on the powerboard outlet, and I also put hot glue around the mains wires near the relays, just to give it some extra strength.

Comments

[StaggarLee]

I was thinking the same thing. I am building a similar project, and base my relay sircuits from this guide http://www.glacialwanderer.com/hobbyrobotics/?p=9

[tehjrow]

Don't you need diodes to protect the arduino?

[anthony_p1234]

How so, do you mean on the power supply to the Arduino?