Help with drill-Mill conversion

**Ross77** · 07-08-2009

Cheers guys.

For a really simple 'get you up & running testing a stepper nice & quick', it's really handy to have one of these in your component tray...

http://www.datasheetcatalog.org/data...stems/5804.pdf

That sounds perfect for testing the motors, I was also after something to control the whole driver/ motor setup without a pc.

Tell you what, Nottingham is nearer and I can take them down to Bristol on the 22nd when I go to the show.

Let's shame the bastard

Good idea, he's not biting yet tho..... maybe have to offer some cash:heehee:
Is that a CNC/ machinery show?

Ross, are you saying to exercise the stepper drivers directly without a PC, or to drive the motors without a stepper driver?

Yes I would like to be able to control the whole driver and motor system without a pc. I was thinking along the lines of a varible pulse generator that could feed each axis as required by using a joystick, (like on a Playstation controller) That way i could control direction with the pad and the speed with a trim pot, If it works i might look at using a ps3 analouge type joystick so the speed it proportional to the stick movement.

Ive been looking on the the net at 555 timer circuits feeding a schitt trigger, but I'm not skilled enought to design it for the correct voltages and pulse timings:sad:

**HankMcSpank** · 07-08-2009

Originally Posted by Ross77

That sounds perfect for testing the motors, I was also after something to control the whole driver/ motor setup without a pc.

Oops...that'll be the speed reading. Sorry!

Originally Posted by Ross77

Ive been looking on the the net at 555 timer circuits feeding a schitt trigger, but I'm not skilled enought to design it for the correct voltages and pulse timings:sad:

you wanna tread carefully there ....you could end up with a stinking mess

**Ross77** · 07-08-2009

Oops...that'll be the speed reading. Sorry!

No probs, still useful

555 timer circuits feeding a schitt trigger

That will be my speed typing....:heehee: Or at least thats my excuse....

Another evening of tinkering and I think Ive finally got the board sorted so I'll leave it for now. Now my finger is better I can hopefully finish the honing and anti backlash nuts. Just got to hope I dont make a schitt job of it :rofl:

**irving2008** · 08-08-2009

Ross,

Try the attached for size...

If you are driving opto-isolated inputs to the drivers let me know as it'll need a couple more parts...

**ptjw7uk** · 08-08-2009

Hi Irving,
on the small pic I think I can see the link to the dir out pin but it is missing if you enlarge the picture, I assume it goes to the divider part of the 2 resistors.

peter

**Ross77** · 08-08-2009

Thanks Irving thats exactly what I was looking for.

For this board I'm going direct to the driver chip but it will be useful to have the opto verision as well if you dont mind. Is it posible to do single steps with this circuit as well :whistling:.

Thanks again

Peter, seems to be ok when I look at it, dir pin is linked to the resistors

**irving2008** · 08-08-2009

Originally Posted by Ross77

Thanks Irving thats exactly what I was looking for.

For this board I'm going direct to the driver chip but it will be useful to have the opto verision as well if you dont mind. Is it posible to do single steps with this circuit as well :whistling:.

Thanks again

Peter, seems to be ok when I look at it, dir pin is linked to the resistors

Here is the opto version...

Single steps I need to think about (and why would you want them?)