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Measuring motor speed with a mbed


#1

You all may be intersted in this:

http://daddyoh.us/blog/2014/10/20/mesuring-dc-motor-speed-using-a-optointerrupter/

I used a 1768 which I know is overkill. I want to port this to mbuino and put a small LCD or OLED on the mbuino. Suggestions for the LCD / OLED. I don’t want to spend a lot of money.

Thanks

Eric


#2

Why not use a character display? They are very inexpensive.


#3

@ DaddyOh - Nice post!

Also love the hat project you did for RVA Makerfest…very cool!


#4

Very nice! GHI very graciously sent me an mbed board (Medusa Icon), and I can’t wait to dive in.

Be careful measuring at 20k RPM, though. Things spinning that fast tend to fly apart, and then stuff gets exciting!


#5

@ DaddyOh -

What are those mounting plates you’re using? Mechano?


#6

@ godefroi

They are actobotics parts. I love them. A little $ but you can build a lot. Have a look at http://www.servocity.com/html/actoboticstm.html

Eric
::slight_smile:


#7

@ DaddyOh -

thanks!