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OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › OpenSprinkler Pi Interfacing with relay board

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  • August 19, 2014 at 7:12 pm #23118

    sfyffe
    Participant

    Hello Ray,

    I am interested in using the Pi version of opensprinkler to drive 12VAC landscape lighting and then integrating this into my home automation system.

    I found this post:

    http://rayshobby.net/?p=4717

    which does what I want. My question is whether or not the current version of opensprinkler pi has the drill-outs for the fly-back diodes and NPN transistor? Is there someone who has done this mod who can share how they did it?

    Thanks & Best Regards,

    Stephen

    August 21, 2014 at 5:10 pm #27880

    Ray
    Keymaster

    The current version of OSPi has per-station bidirectional TVS, which is used to suppress transient voltages. So you don’t need additional flyback diode anymore.

    The post you referred to uses a relay board, which has built-in flyback diodes.

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OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › OpenSprinkler Pi Interfacing with relay board