Re: Suitable relays
Reply #5 –
I was also thinking of using solid state relays for controlling my outlets in my workspace here, but I decided to use relays.
If you want you can use my relay board:


With this board you can drive the relays directly with TTL or with I2C.
Partslist:
PCA9554
ULN2803A
LP2985-33
and standard relays that fit this footprint with 5V oder 12V DC. I use these boards with a webplatform (my own board but quite similar to the DP one from software point of view) and software I2C.
If you are interested, I can give you the software needed for I2C to work. ;)
Best regards.
EDIT: Forgot the eagle files: http://mega-bug.net/relay_board.zip
EDIT2: The vreg, port expander and darlington array can be sampled from TI... just FYI. :)