A3144 Hall Sensor not working as expected

Using Arduino Sensors
1

Hi,

I do have a small controller which uses a 502J potentiometer for a throttle.
It actually gets 3,3v and "returns" the state of throttle. Has 1,65v meaning zero throttle, going up to 3,3v when moving forward and going down to 0v when I push the throttle backwards.

Now I would like to replace this poti with a Hall sensor (to make the whole thing waterproof at the end). So I searched around and found the A3144 Hall sensor which - as far as I understand the description - does exactly what I want.
Unfortunately not.

Whenever I come close with a magnet, it turns on or off, it is not "measuring" the distance and returning a value between 0 and 3,3v - it's all or nothing (there is also a red LED on the small board that turns on when getting close, which I don't need but anyway).

Since I am a bit new to electronics, could someone please show me the way to a working solution? It seems I am using the wrong sensor ... ?

Any help is greatly appreciated.
Cheers
Dan

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2
  • Sounds like you want linear/analog hall effect sensor rather than the 3144. :roll_eyes:
1 Like
3

So if it is the wrong one, what would you suggest?

4

Okay, I have now tried a 49E sensor.
It gives smooth values - yeah - but unfortunately, this one does not go till max.
Throttle at zero gives 1,55v (correct) and goes until 2,5v - but is supposed to return 3,3v at max. Similar for the break, which should be 0v, the sensor only goes till 0,7v but this isn't too bad, because I don't need the break anyway.
Still the wrong sensor?

5

Maybe but 2.5V is the max output from that sensor when supplied with 3.3V

6

If the SS49E sensor is powered with 5V, the output range is 1V - 4V.