It’s time to tackle a fairly ambitious challenge: let’s try to make an LPC810 run off “harvested” energy and use it to periodically send out a wireless packet.
This week will be a short intro into the matter, with more to follow later:
- Picking up magnetic energy – Wed
- Collecting energy into a reservoir – Thu
- First goal: just some blips – Fri
To lift the veil a bit, here’s the energy I’m going to try to harvest:
This is the voltage from a Current Transformer (CT), when unloaded. Such a CT needs to be “clamped” around one of the wires in an AC mains cable, and will then generate a voltage which is proportional to the amount of current flowing in that wire.
Well, maybe, sort of…
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