Quote:
Originally Posted by Alan Anderson
It's more like two Spike modules stuck together, but paradoxically less integrated. A single Spike already has two relays, with one LED that indicates combinations of state. The David has individual LEDs for each of its four relays.
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Of course, you're correct. I've never bothered differentiating the spikes from a normal relay, other than to explain that they are a relay that allows on/off/forward/back. I think that's something I'll explain more in depth to my students this year.