I purchased some Hall Effect sensors (Honeywell SM353LT) and some neodymium magnets to have a look at motion detection for the rain gauge. I should have realised from the "SM" that these are Surface Mount devices. They are also incredibly small!!
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2 SM353LT HE sensors in a travel pack! |
You can just see the connectors in the pack - 4 on the lower side of the package. Fingertip shows the scale, tiny.
Now to see if I can connect these to anything. How? I have some one-sided copper PCB, some 0.1" pins, a soldering iron and various cutting implements. Go to it, Mr. G!
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Board with holes for pins, and pins |
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Board, pins, device placed for working out location etc. |
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Board with traces cut - I've made it simple, centre pin to centre contact! |
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Truly horrible pic of device ineptly soldered on |
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Finished effort - doesn't look too bad! |
So all I have to do now is power it up and tickle it with some magnets. Wish me luck!
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Simple micro:bit code |
And here's a video of the HE sensor doing some HE sensing. Marv. Might need some epoxy before I stick it outside in the rain...
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