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I was thinking of the wrong chips. U3, U4 and U5 are the inverting buffers. On my board U13, U14, U15 and U16 are 74LS00N's(quad, 2 input nand gates). If your board uses triple input nand gates then...

If the tech fixed the problem simply by moving the power connector for the spindle to acc1's plug then I'd suspect the spindle's SSR or one of the buffers/couplers upstream. Check the power coming...

I hope you have access to an oscilloscope because it is the only good way to track down this problem. The relay clicking is probably the spindle power relay. I'd start by looking at the enable signal...

Here is the trace I did on the control box. Everything seems to match what you've found except your spindle control is in the DB25 connector while mine is in a secondary DB9 connector and you have...

Motor tuning settings;

X / Y
Steps per 4000
Velocity 60
Accel 5
Step Pulse 25
Dir Pulse 0

Z

I can get the config file tomorrow. Which settings are you interesting in and what is your mill not doing properly? I found most of my problems were electrical feedback and filtering issues.

If you want to run the software that came with the machine then, yes.

Can't you make a laser based rapid prototyping machine without any linear x or y motion? Using two mirrors attached to fast servos you can direct the light anywhere on a 2d surface. You would still...

Any updates 44 Echo?

Fastest1, do you have an ISA card for the prolight you'd be willing to sell? I'd like to get one to be able to complete my understanding of the controller/card interaction.

Optocouplers or...

The input voltage to all the logic IC's come from the 5v regulator. If it is bad then all kinds of weirdness ensues. The step pulse signal comes from the optocouplers which will put out a nice pulse...

The short answer would be to download the datasheets for the l297/l298 and use the data in them to test the chips.

For the l297's start with the enable pin and make sure it's high. There are a...

Ok, I'll tell you what I think is wrong but without the scope can not actually diagnose.

The only test you can do with a multimeter would be to test the 40v/5v power supply and make sure nothing...

Do you have an oscilloscope?

Don't ever trash it. If you live anywhere near Ohio I'll take it off your hands but I'm going to guess you'll be keeping it :).

When you try to move an axis does the axis motor sound sort of like...

Figure out a way to test pin 22 for voltage while the controller is hooked to the computer. It maybe reading always high because there was no draw on it. You can use an ohm meter to find the trace on...

Is the software detecting estop or shield open correctly? From your picture the shield is detecting open. Was it really open? When you press the estop does it reflect in the software?

Went great. Didn't have to alter the control box at all. Check out my other thread here for the pin out and a brief overview. I got the ATC working too but I did have to alter the controller for it.

I've only ever looked in the head of my machine once but I think the drawbar is held up (closed) by a spring and the piston only pushes down on the collet to open it. I know the collet doesn't need...

Sure. The ATC is an air powered system which consists of 5 solenoids, 9 pistons (4 sets of 2 for the tool stations), a drawbar, 3 sensors (2 proximity and one pressure), and a PIC driven PCB...

If pin 22 is high when the software is enabled and low when the software is disabled then the DIP settings aren't the problem. Make sure it is swinging high/low when you enable or disable the...

That driver uses +40vdc for the motors and +5vdc for the logic. The vreg for the logic is on the smaller heat sink closest to the main filter caps towards the front of the enclosure but I'd be...

If your prolight mill is like mine then spindle control should be easy. Basically you vary voltage 0 to 9v on pins 1(+) and 2(gnd) of the DE9 connector coming out of the back of the mill. Check out...

That worked thanks.

I'm making a tool change macro and stuck on trying to detect if the machine is homed. I've tried using GetOEMLed(807)/GetOEMLed(808)/GetOEMLed(809) as well as...

I’ve been working on backwards engineering a Prolight 1000’s control box so I wouldn’t have to hunt down a controller card for my mill or be forced to use the older software that comes with it. I’ve...

This is for a stepper motor system with a toothed belt going between two toothed gears. Here is a pic of what I'm working with.

http://img689.imageshack.us/img689/5155/0825001345am.jpg

This is...

Thanks for the replies. The motor is connected to the ballscrew via belt. My thinking is by putting the encoder on the screw it'll keep track of the actual table position even if there is lost steps...

In the ends of the rod of my ball screws are little holes. Are these holes important or just a byproduct of manufacturing? I was planing on drilling them out a little, tapping them, then using them...

Small update of things I've figured out so far.

Can the software control the RPMs of the spindle? <- Yes.
Which way does the machine home? Is the bed to the back or front, left or right?, <-...