Enhancement: Relays about johnny-five HOT 9 CLOSED

You have to be ultra careful here. Relays generate a super strong current when the magnetic fields collapse (AWESOME, right?), so hooking them up to an Arduino directly is bad juju.

You'd usually wire them though a set of Transistors, and they'd just be Digitial output devices :)

from johnny-five.

I've done some simple circuits with relays (and transistors, as @paultag mentioned) and just used board.firmata.digitalWrite( ... ) to activate/deactivate the transistor. I'm not sure a generic relay API makes sense, but maybe if you work with the lower-level code, you can share it and it will be more apparent what a relay API might look like.

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Nice, thanks for the warning @paultag , i gonna follow what @rmurphey says, wathever i code, i will let you know guys.

from johnny-five.

Sure thing. I strongly suggest either two transistors set up as a Darlington Pair, or a single package TIP112 :)

from johnny-five.

@rwaldron I see this was marked as a feature, Is there a plan for relays? @rmurphey has a good point here.

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@divanvisagie I was just waiting for the contribution to come in ;)

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Ill start with this when im done with within.

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Working on it here: https://github.com/divanvisagie/johnny-five/tree/relay

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Looks great so far :)

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