Magnetic sensor for measuring speed


#1

Hi, I wanted to do a project to measure the speed (m / s) of a motor. I use a raspberry pi and a magnetic sensor. Has anyone done similar projects? Or some advice?
Thanks


#2

Hi Antonio!

You might try adding an analog extension and use the analog signal from the sensor to input on a mcp3008 or such. (be sure to add the analog extension first) This will convert the analog signal to a digital signal and a widget can be added to your dashboard choosing the setting that comes closest to the speed reading you want. Such as: Volt, Float or integer. At present you may have to do some math to convert what you see on the dashboard to actual speed. For example in one of my projects volts didn’t work for reading volts but float gave me exact readings.

Hope that made sense!?
William