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Help on I2C question

clem57

Looking for a method/device to address as I2C to turn on/off 12+ volts. It needs to be very small and can have an address set. I will have around 50 different addresses to control 3 lights.

 

Thanks

Clem

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    Clem,

              Not I2C but SPI.  Have a look at Majenko.co.uk  he does a 32 port IO expander board and up to 4 can be used on 4 wires from the Arduino i.e. 128 IO!   I use these to drive banks of 8 relays via opto couplers, these come as ready made boards.  The realys can switch any voltage you like.

     

    The Majenko stuff is very good quality and he produces a library to drive the boards.

     

    Bob

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    Clem,

              Not I2C but SPI.  Have a look at Majenko.co.uk  he does a 32 port IO expander board and up to 4 can be used on 4 wires from the Arduino i.e. 128 IO!   I use these to drive banks of 8 relays via opto couplers, these come as ready made boards.  The realys can switch any voltage you like.

     

    The Majenko stuff is very good quality and he produces a library to drive the boards.

     

    Bob

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