Open Source Boards Available, Stepper Drivers and Break Out Boards

[pminmo]

http://pminmo.com

Two Simple Unipolar drivers (single sided for the DIY Toner Transfer folks)Two Choppers L297-8 combo, Allegro A3987.
A Simple Break Out Board (single sided for the DIY Toner Transfer folks)
A Opto Isolated BOB is in work.

Eagle files are available if not posted on the website.

Phil
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[cbcnc]

pminmo,

Post them in the new links section. There is a place for Opensource Designs.
They sound good, I will have a look at them myself.

Thanks,
Chris

[pminmo]

I see two Open source links, one for machines one for software. What about for electronics?

Phil

[ynneb]

Great job Phil & guys. We should have a party.

The first open source boards developed by that funny little crowd who speak a foreign language to most here. I will ask Paul to set up a section for them to be downloaded.

[ynneb]

Phil, there is now a new section created for " Free/Open-source CNC electronics Schematics and artwork" you can access it from here http://cnczone.com/modules.php?name=...ategory&cid=58

If you would prefere CNCZone to host the file, please send it to admin@cnczone.com

[chuckknigh]

Where can I find the copper layer for the 3977 boards? I saw it available for the 5804 and the 297/298 versions, but not for the chips *I* have.

Isn't that always the way it goes? ;-)

-- Chuck Knight

[pminmo]

Chuck I can post the copper if you like. Or email, It's a double sided board, 10mil traces and clearance, A lot of via's. Not much or a board for the DIY'er unless you have em made by a pcb house.

Phil

I attached though if you are so inclined.

[CNCadmin]

http://webpages.charter.net/pminmo/cncelectronics.htm

Two Simple Unipolar drivers (single sided for the DIY Toner Transfer folks)Two Choppers L297-8 combo, Allegro A3987.
A Simple Break Out Board (single sided for the DIY Toner Transfer folks)
A Opto Isolated BOB is in work.

Eagle files are available if not posted on the website.

Phil

I added a link here to your site-
http://cnczone.com/modules.php?name=...nkinfo&lid=193

[chuckknigh]

Are your copper images mirrored, for toner transfer? I just don't want to mess up, on my first attempt.

-- Chuck Knight

[chuckknigh]

Nevermind, I just opened it and noticed the backwards text. Definitely laid out for the toner transfer crowd.

-- CK

[pminmo]

No Chuck I'm pretty sure I did them without mirroring. Eagle I believe put text on the bottom in mirror format I think. Pretty sure they are straight up, look closer, do you need me to mirror them for you?

Phil

[slp_prlzys]

slp, the 5804 pin 1 is enable it has to be held to a logic low or you can wire it to ground, other than the led it won't do didly without enable low. Pin 3 is direction and pin 5 is step. Pin 7 is gnd and pin 9 is an option for 5vdc out or in. Dingy me I had a small instruction document put together, but didn't get it on the website. (its attached to this reply) Organization isn't one of my strong points. It's possible you could have blown one ore more of the FET's, were the running hot? Was your motor an 18V motor, or did you have some current limiting resistors in, or what do you know about the motor? R4 and R5 depend on the motor and power supply, and have to be calculated the same as the discrete board. You did compare your motor rating to your power supply correct?

hi pminmo, I moved my quest here, I hope it's ok,
I was going to start a new thread, but don't know what I should
put in the title,

First, I know nothing about motor, a little slow but I'm
learning. My motor is 5.2V 1.4A/phase, I know that my pwr supply
is not enough since it's only 1A, I was just testing it, would you
mind explaining what was happening If i.e. my test setup,
does the motor sucks too much current? ( I think the term was draw)
I haven't any resistor yet, since I haven't decided what type of
power supply I should be using, I'm leaning toward ATX supply,
with ************* hacks. I also got the steppercalc Balsaman posted,
to ease up on the calculation.

The FETs were hot before it killed the power supply and the board.
thanks for the doc btw, I sure am hoping your not losing your patience
on a newbie