sense rotation hall sensor (switch type)

hello everyone

I'm tryin to know a sense rotation of a wheel.

it is possible detect the sense rotation of a wheel with one magnet and and two sensor hall (switch type)?

if some one can help I will aprecciate the kindness.

BR

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dougw over 1 year ago +2

The KMT32B-TD chip can accurately determine the angle and rotation of a magnetic field. datasheet I used one to control the steering angle of a robot: Sixth Sense - Magnetic Angle Sensor - GraffitiBot…
acdc90 over 1 year ago in reply to hazard +1

Hello are you tring to get to get indication of speed or of direction or both ? are you going to put a magnet on the wheel or on the shaft. ? what would be the maximum RPM ? is this a temporary…
robogary over 1 year ago +1

Yes. You need to know decide on minimum speed you want to detect to decide if its running or stopped so you know how long to wait for a pulse. https://www.automation.com/en-us/articles/june-2021/how…

0 anniel747 over 1 year ago

Yes, it is possible.
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0 hazard over 1 year ago

you can tell me if i need check the time move between the sensores? or with the value of output sensor?
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0 acdc90 over 1 year ago in reply to hazard

Hello

are you tring to get to get indication of speed or of direction or both ?

are you going to put a magnet on the wheel or on the shaft. ?

what would be the maximum RPM ?

is this a temporary build or long time ?

is it covered or in a wet environment ?
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0 robogary over 1 year ago

Yes. You need to know decide on minimum speed you want to detect to decide if its running or stopped so you know how long to wait for a pulse.

https://www.automation.com/en-us/articles/june-2021/how-encoders-provide-motor-speed-position-control

When a gearbox is used, its better to detect the motor shaft position and speed because you get more pulses on the high rpm side of a gearbox or pulley.
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0 hazard over 1 year ago in reply to acdc90

speed, RPM and grequency.

yes, put one magnet on the wheel

100Hz max freq.

longe time build

covered environment.

thanks
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0 acdc90 over 1 year ago in reply to hazard

do you what an off the shelf sensor that just screws to what ever frame there is and has 3 wires +v end and out put

or 2 wires and that needs a pull up resister to +v

or is this on a budget where you want a TO92 package on some vero board

is there already some dc v near by ?

what out put of sensor is required eg 0 to 5v

how stable is the environment for screwing a sensor to

is the wheel only going 1 direction
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0 hazard over 1 year ago in reply to acdc90

the sensor are pull push output, and they works on 5v. the wheel go to CW and CCW.
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0 hazard over 1 year ago in reply to robogary

the sytem is basic like this operation: the wheel rotate CW maybe 5 ou 6 times, than return to original position on CCW.

the movement have around 25hz , some time 10, other 15 or 25.

the time is between this values.
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0 acdc90 over 1 year ago in reply to hazard

if you want to no which direction the wheel is turning who will need 2 sensors
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0 acdc90 over 1 year ago in reply to hazard

are you trying to count the number of turns from center or home position
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