Hall effect sensor to midi readout

Hi there first post and first dive into the world of arduino so hey to everyone!

So here goes, I've followed a very basic project using an old tutorial:

Everything in the original code makes sense, the pot works without fault according to its intended use. My aim was to now hook up an apem sn1000 video t-bar fader instead of the pot to mimic the same result as a fader.

Problem I'm having is this fader works with a hall effect sensor rather than the simple pot readout. My hope was that there would be some info on converting hall sensor readouts to midi in the same way however I seem to have hit a dead end as mostly these sensors seem to be used as a switch rather than a linear fade and I've not found any info on converting to midi.

Just wondering if anyone has had any experience with these sensors or has any guidance on this and whether the code in the blog above would need much modification to get something like this to work correctly.

Many thanks

Most the SN-series faders just produce a variable voltage output so in that sense they will look exactly like potentiometers connected across 0-5V as shown in the project. It should be a simple replacement.

But I couldn't see an SN1000 anywhere. Do you have link to a specification?

Steve

Hi Steve,

Thats what I was hoping would be possible, I've wired the connections to match the datasheet essentially just replacing like for like but when the fader is moved there isn't any fade occurring. The actual fader is listed here: http://www.ebay.co.uk/itm/232126338072?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT but also seems to match with one on the apem site here: Error Page even though it doesn't list it as sn1000 the 360 spin shows the sn1000 so I'm assuming the specs are correct.

Ok scratch that last message, have just had time to sit back down again and tried re-flashing the board with the code. Seems like for some reason the code had been wiped from the board when I swapped out the pot, since the reflash it is now sending the correct values and just hooked it up to vmix all working correctly!

Cheers Steve.