uxcell® 10pcs 3 Pins Unipolar Hall Effect Sensor Magnetic Detector 2.5-20V

Needed to detect saft rotation with a magnetic sensor. These were perfect.!

Need a data sheet. but works great

I thought since the 2014 review they'd have this lined out, but it is as all reviews have stated - it is not unipolar. It is latching and requires flipping the magnet to get it to switch back off.Being my first time using these, I thought they would behave like a reed switch - either passing full voltage or not. I found I needed to use a 10K pull-up on the output lead when the magnet was away. This pulls it up to whatever voltage you need to represent digital high voltage. When the magnet is near, it goes straight to ground on the output pin so it can be readily detectable. However, most microcontrollers will have an internal resistor you can set to pull it up without the need of an external resistor.I used a rare earth magnet and could switch it almost an inch away which was good for my application.I rated it a 1 since the product description is still not correct after 4 years of reviewers telling the seller otherwise.

The description completely fails to mention that these are not only open-collector output - meaning you need a pullup resistor to V+, but they stay in their last state! If I flip the magnet around, I can get this sensor to change state, but it STAYS THAT WAY!

So I tried to use these in a brushless DC scooter motor, no triggering of position -- not bipolar unless the cheap scooter I'm fixing has some really weird configuration to it. They're cheap enough to give it a shot that they're bipolar contrary to their label of unipolar, but no datasheet means trial and error is the only way to test these out for whatever application you're envisioning. Maybe the wiring for the three pins is non-standard? I gave up experimenting and ended up ordering ten of the Honeywell SS41.

These are the latching type of sensors. It sets data to 1 when one pole of a magnet is near it, and back to 0 when the other is near it.That was not clear from the description or title at the time of this review

I have found 1 out of the package that actually works but not how it should.. as stated by another review they act like a switch.. the magnet has to be moved from one side to the other to actuate the sensor. While the cost is relatively cheap so are these hall effect sensors... highly recommend staying away and not wasting your money like I did.

Bought 10 of them and absolutely none of them worked. Other hall Effect Sensors worked just fine in the same circuit. Absolutely avoid this waste of money!

velo electrique

natürlich ist dieser "Hall Sensor" ein Schalter, wie fast alle Hallsensoren die hier zu finden sind. Ist ja auch die Hauptanwendung eines solchen Teils.Ein kurzer Blick in das Datenblatt hätte das auch klar gezeigt. Ich bin mit dem Teil hoch zufrieden, schaltet mit den 2x1mm Micromagnetenauf 1 cm Abstand.

自転車の車輪やクランクの回転センサーとして使えるのでないかとテスト中です。

Fanno il loro lavoro egregiamente.Arrivati in tempo come sempre grazie ad Amazon.Sensori ottimi per qualsiasi applicazione.Il campo di ricezione del sensore entro il quale cambia stato è di circa 2/3 cm dalla faccia del Sensore.

very happy thanks