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Arduino Rotary Table MEW 249 Wrong part Number

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Graham Titman10/01/2017 21:12:39
34 forum posts
2 photos

Andy thanks very much i will have a try tomorrow .Graham

SillyOldDuffer10/01/2017 21:14:12
927 forum posts
188 photos


This link is to a version of the code that works on my DFRobot. It's been modified to make the buttons work.

Try downloading and installing it.

I can't guarantee it will work. If it fails, please complain and we'll try what Andrew suggests in the last sentence of his post.



peter ravenscroft11/01/2017 18:11:19
73 forum posts

hi john

is that the way you connect remote switches as i am about to wire up a control box when the switches arrive

hopefully i'll have a unit working shortly



Carl Wilson 411/01/2017 19:36:20
425 forum posts
47 photos


No. What Dave is talking about is a different version of the LCD and button shield that needs different values in the Arduino's program for the Arduino to recognise which button is being pressed. If you are wiring up remote buttons all you have to do is to solder leads onto the contacts of the buttons on the LCD/button shield and then connect these leads to the relevant remote buttons.

If you have any more queries on building up the unit don't hesitate to PM me.


Graham Titman11/01/2017 19:47:44
34 forum posts
2 photos

Hello thank you everybody for your invaluable help i have just got both arduinos and the keypads to work after putting so many numbers to get the right hand key to work i arrived at

850 return no key

85 return right key

230 return up key

35o return down key

450 return left key

850 return select key.

The only problem now is even with a 24volt supply it only revolves at about 14rpm as i had hoped to drive a small mill head up and down with one of them with a 3 to 1 reduction Thanks again Graham

Andrew Holdaway11/01/2017 21:58:10
117 forum posts
14 photos


Have you changed the sketch to disable microstepping? At the top of the sketch you will see this line

#define Microsteps 1 // Depending on your stepper driver, it may support
// microstepping. Set this number to the number of microsteps
// that is set on the driver board. For large ratios, you may want to
// use no microstepping and set this to 1.

The figure after #define Microsteps should be 1 to give the fastest speed.


Graham Titman12/01/2017 07:13:56
34 forum posts
2 photos

Thanks Andy i will give it a try this afternoon.Graham

peter ravenscroft12/01/2017 18:03:32
73 forum posts

thanks carl



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