How to Use Magnetic Hall Effect Sensor to Detect RPM for 4 stroke 420 cc engine?

Other Hardware Sensors
1

Hello Everyone!

I am trying to use a magnetic hall effect sensor to detect RPM for a 4 stroke engine. I am planning on attaching magnets to the shaft of my engine and having the sensor in close proximity to my shaft. What strength of magnet is required for a magnetic hall effect sensor, and how close does the sensor need to be to the magnet? I assume proximity is dependent on the strength of the magnet (higher strength creates a larger magnetic field). What kind of magnetic hall sensors are best for this application that are also compatible with arduino? Is magnetic even the way to go? I am looking for some advice.

Thank you so much.

Hamna

2

So many questions that you could easily answer by testing. NO engine required. Just move a magnet across the sensor and see the results on your Arduino program. Easiest is to use a LED to turn on when the Hall effect device detects the magnetic field.

3

Hello, thanks for the info. I do need to know the information above before purchasing the sensor for my company. Unfortunately, I am not in possession of it right now. I saw the method you mentioned on youtube. Do you know what hall effect sensor I can purchase from arduino? I found a Grove Hall Sensor, is that the best one?

4

I would try this one. Inexpensive. You may need to try a few different types. This one should be fast enough to keep up.

Edit: Chances are your motor already has at least one magnet on the crankshaft already for ignition.

5

Do you know of a laser tachometer that I can use instead of a magnetic hall effect sensor that is compatible with arduino?

6

What type of engine? If a lawn/garden type, it has a magnet on the crankshaft.

7

Its the Princess Auto 420 cc engine (4 stroke). I think I am more interested in a laser tachometer instead of a magnet (less compatible with setup as components are placed far away even with use of extensions). Do you know of a laser tachometer that can be used with arduino?

8

Then you need to complete the method of attachment and setup for your project. A reflector will get oily and dirty and stop working. A Hall effect sensor will still work with an inch of dirt on it and the magnet.