I am new to Arduino programming. I have been looking for a programmable digital saw fence. I do a lot of cutting of aluminium profile, I am looking for a way to enter the the desired cut length, a dc motor with encoder will move an end stop to the entered length. any help or suggestions would be greatly appreciated.
You can use a keypad to enter the desired cut length and a LCD to display the values.
I don't know much about motors; you probably want to use a stepper. You will have to translate the cutting length to steps.
If you are new to Arduino , I would write a few sketches first to get the hang of coding .
You really need to sort the mechanical side out first , before jumping into Arduino - how you drive the fence, power needed , how will you stop it moving when in position , how will you hold that position, how will you measure its position , control backlash. How fast ?
How will you package the Arduino to make it rugged for the environment .
When you have all the parts sorted you can think about how the Arduino would control it .
This is a very difficult project for a beginner and needs good mechanical skills
What lengths do You have in mind? What span? Longest, shortest? What precision?
Have a look at this one which uses a PC to control it .
Here
Cut lengths range from 1 to 3 metres, resolution is in mm e.g. 1879mm would be an average cut length. I have a background in electronics, sourcing the hardware shouldn't be a problem. It's the programming i have problems with.
Describe the mechanical system. A picture, a principal drawing.
Post the code You've made so far. Post links to the datasheets for motors, sensorc etc. I would think of a rubber wheel feeding the part the wanted the lenght.
Here are some motorized saw fence and Arduino based digital table saw projects. You can proceed by combining these ideas:
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