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Stepper Motor Control

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vtsteam:
This might give you some ideas:

http://www.instructables.com/id/Lunchtime-Clock/

kd8wdave:

--- Quote from: catceefer on April 21, 2015, 03:31:52 AM ---I wonder whether anyone can help? I have never had anything to do with stepper motors and would appreciate some basic guidance or link to an idiot's guide. I have been looking at the motors on e-bay and see that some come with a control board, others do not. My questions are:

- do I need a board?
- if I use a board, how do I programme it?
- if I use a Raspberry Pi or Arduino, do I need the board still?

To put the question into context, I wish to use the motor to move a lever forwards and backwards a set amount every minute.

All really basic questions, I know, but I need to start somewhere.

Thank you.

James.

--- End quote ---

Hi,
Here's a pic of my Z-axis stepper controller and dual-h-bridge for driving a bi-polar stepper
either forwards or backwards. The step/dir in my case come from an Arduino UNO board
which has 'g-code' passed to it via USB port from a desktop.  My controller is a PIC based
'628A' 18 pin processor written in assembler. While my code doesn't need it, you can generate
a clock pulse from a rectifer from the 60hz line which is a precise 60 pulses/sec.

cheers

DavidA:
No one has mentioned creating a flow chart first to set out on paper just what is supposed to happen and when.

Or do programmers not do that these days ?

Dave.

John Rudd:

--- Quote from: kd8wdave on June 23, 2015, 12:32:18 PM ---

My controller is a PIC based
'628A' 18 pin processor written in assembler. While my code doesn't need it, you can generate
a clock pulse from a rectifer from the 60hz line which is a precise 60 pulses/sec.

cheers

--- End quote ---

Great idea.... But here in the UK, mains is 50 hz.....separate osc ? Or generate in s/w?

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