Hi R!!f@, again you are confusing me(easy to do) Why the tachometer? The PC will tell the steppers how fast to turn. The hi-low step out put from the PC (using the CAM software) will control the movement of the motors.My thoughts exactly.
I'm having a hard time running the tacho, with a PIC16F628 and 20x2 LCD.
I thinks the LCD command set is giving me problem, and may be the 4Mhz Xtal.
Circuit uses a 2 pin one, what I have is 3 pin one.
So I think I will enable the internal oscillator.
question is will it hinder the RPM accuracy reading?
Different commands from the CAM software tell the machine how fast to move for different tasks that its doing. And you do that in the CAM program.
I know you are really eager to get started on this, but, and this is not meant as a put down, Your running before you can crawl. The motors should be the first thing you get, then you can figure out the drivers and power supply you need.
If your in the same boat as me you don't have a lot of extra money to waste. Buying/building something now that won't work for the final machine is discouraging and uses finances that could be put into what will work.
Again not a put down just a different way to look at things, cary