Newbie from NZ

[rjsutton]

Doddy
i think you may mean don't "underestimate" Chinese motor-gearbox as you seem quiet happy with there performance. !
thanks for your input and your Logic seems sound
Loose a bit of rmp for Torque.
I came here to find out what parameters i need to make the Ballscrew work and i think im nearly there

I had a look on Arduino website and im more confused than ever..H-bridge driver ! STK500 Protocol ! ICSP Header.! loT Bundle......
i will have to join their forum to get answers on how i get the motor to stop at one end and reverse and stop and go forward and stop and reverse.......... I love your comment "That's the easy part " mmmmmmm.
I thought by buying a motor with a built in-on encoder then i would just pick up a controller with a few buttons to press when the limits were where i wanted. Not be be it seems ,
I was going to use 2 micro switches to limit travel but i still cant work out how they must be wired to stop travel and reverse the next time the controller button is pushed. My Bob the builder brain doesnt work very well in these situations
Thanks again
Richard

[Doddy]

Doddy
i think you may mean don't "underestimate" Chinese motor-gearbox as you seem quiet happy with there performance. !

No, I meant don't overestimate. These are very small devices, very small motors. They are reasonably rugged (the first that I stripped down was a mostly metal gearbox). I think these are particularly under specced for the numbers that Andy provided - but I'm trying to understand my gut-feel (rather than science) that they might just be worth a look at if the $30 cost is not prohibitive to you. But understand that you'd be in the realm of practical experimentation.

Doddy
I had a look on Arduino website and im more confused than ever..H-bridge driver ! STK500 Protocol ! ICSP Header.! loT Bundle......
i will have to join their forum to get answers on how i get the motor to stop at one end and reverse and stop and go forward and stop and reverse.......... I love your comment "That's the easy part " mmmmmmm.
I thought by buying a motor with a built in-on encoder then i would just pick up a controller with a few buttons to press when the limits were where i wanted. Not be be it seems ,
I was going to use 2 micro switches to limit travel but i still cant work out how they must be wired to stop travel and reverse the next time the controller button is pushed. My Bob the builder brain doesnt work very well in these situations
Richard

If you wanted I could provide the suitable software(or at least the basic framework that could be adapted by yourself) and help advise on the wiring. I'm not promoting Arduino as the only solution here - and at the end of the day these are simply based around COTS microcontrollers, but they do promote an accessible set of capable programmable hardware.

[John McNamara]

Hi RJ sutton

This link points to a 12v DC servo motor search.
Some of these units have an integral gearbox while others don't however if you make sure the shaft and flange mate up many will will work with a separate often right angle gearbox. Servo motors usually have an integrated encoder.

Leadshine offer a good range of servo controllers.and or motors. They are blatantly copied! and it is hard to tell the fakes are so similar. Make sure you are getting the genuine article.

You will need to control this setup with a micro, an Arduino for example.
This approach using servos better quality gearboxes and a dedicated controller will cost more but it should be very long lived and reliable.


Regards
John

https://www.google.com/search?q=12v%...%3Apinterest.*

Worm reducer search

https://www.google.com/search?rlz=1C...4dUDCAY&uact=5

Leadshine servo controllers

http://leadshine.com/Pdf/Catalogs.pdf

[rjsutton]

Thanks John
interesting reading
appreciate your time
richard