| I have basic code for a 
16F877 PIC based stepper controller that takes step & direction pulses from 
a PC parallel port and drives steppers 1/2 or whole steps, if you realy want to 
DIY. For drilling you may not need feedback, my PC board 
drill doesn't because there is little resistance or backlash with leadscrews 
& antibacklash nuts.   
    
    Hi all,  I'm currently wrecking photo copiers to 
    get steppers to set up an RF 30 mill drill as a 3 axis unit with 
    the option of going to a 4th and 5th at a later stage using an indexing 
    head. I'm not sure if the steppers will be suitable or not but I'd like to 
    get the project operational at least. What I need to know is what 
    controllers are compatible with EMC and where I can get them. The steppers I 
    have so far have feedback sensors (hall effect), I will be running a Pentium 
    100 with 40Mb of ram and Linux 5.2 and RTLinux 2.2. This is only a hobby and 
    considering the current exchange rate with the A$ I don't wan't to spend any 
    more money than necessary, so I will consider a kit which I can assemble 
    myself or even instructions to do it myself.    Thanks  David 
Preston |