How to use Optocoupler sensor module as RPM meter (Tachometer)

Merci beaucoup "from France"

Hi there, thanks for your very performative video, Can I ask how to add 2 outputs to control the motor speed base on rpm reading and rpm setting to maintain the desired speed?

Hello friend, my Optocoupler is one of those used in printers, which has 4 wires, two for power and two for signal, so how can I use it in your code, given that yours only has one signal pin... (attachInterrupt(digitalPinToInterrupt(2))? Thanks

Hallo mr

How much will this be affected by EMI noise?

hii bro, how to convert rpm to km/h??

keren

Thank you for your help.
To ,my case
km/h = 5.97 * rpm *0.001885;

Very well expleined thank you

hey bro, my interupt triggers way too much giving too high reading, could it be the wheel is too thin? also the wheel is slightly warped could this affect it?

Hi very good thank you), it possible to write you in privat please?

Can u share 3d file disk holes sir ?

Hello. Can you help me how to attach my servo with RPM meter? So when the RPM is below the specified, the servo will automatically rotate and stop when RPM become normali again

Hi miliohm, after I verify the code in arduino, a warning appears "count was not declared in this scope". Can you help me how to fix that?

Can I get the circuit

Thank You so much.That was Very Useful!!!
Can one do this with Arduino Nano?

Hi there, thanks for your clear explanation about this setup. I got it working because of your video! But what if I want to have a second RPM reading on the 16x2 display with a second Optocoupler sensor? How do I adapt the code for this situation?

Interessantes Video, danke .