Profile cover photo
Profile photo
Steve Freedenburg
77 followers
77 followers
About
Steve's posts

Post has attachment
I'm slowly grinding away on my stepper motor driver PCBs. I'm going for two boards for the X axis and those are finished.

Working on the Y snd Z now.

My plan is to have this "prototype" expanded and very accessible and all the connectors and LED indicators exposed on the top of the case.

Maybe a future revision ( if this goes well ) I'll do something where everything is consolidated.

I'm a bit concerned with the power hog steppers. I may need to up the LM317s to something beefier. They got hot and hot fast! I'm likely pushing them to the 1.5A by half stepping.
Photo

Post has attachment
Rule #1 don't build something you can't take apart...

The agonizing part of a build is plowing through the parts that aren't fun but ARE smart.

Properly terminating cables and avoiding the ease of directly soldering wires to a PCB when a connector/jack is the better way to go is tough. I just wanna build!!!!
Photo

Post has attachment
A "story" of a DIY PCB fabrication process through pictures. Drilling the holes and soldering tonight!

The PCBs are stepper motor drivers.
PhotoPhotoPhotoPhotoPhoto
17 Photos - View album

Post has attachment
Full step sequence complete. Storing the index in a static int variable. Repeatedly calling step function and passing the index and returning the index and driving the stepper in a switch case decision element.

I may build in direction next.

Kitten included as a bonus.

Post has attachment
Terminating the baby steppers
Photo
Photo
2 Photos - View album

I'm finally starting the XY table for my CNC mill.

This has been a "one day I'll start this project" type of project.

Well, I got lucky and picked up 4 $60 unipolar steppers for $10 each.

Just hit up Radio Shack for some Molex connectors and we'll bust rump on designing my stepper driver PCB.

Woohoo!

Post has attachment
No, it's nothing special. But tonight's project was organizing.

If you're like me you have dev kits, Arduinos, various shields, breakout boards etc... sine just come in ESD bags, others in various sized boxes. I could never store them effectively.

Tada!!! Neat and orderly!
Photo

Post has attachment
Eagle CAD and Eagle3D helped me blow a puff of life into my design so I can see what the finished PCB will look like before production.  This has been my biggest professional challenge to date and aside from a silk screen layer and any wrangling I have to do with the board house's specs.  It's done.

I'd like to thank Netflix, the folks at +Adafruit Industries and +Benjamin Heckendorn  for giving me so much to watch on YouTube while my brain turned to mush routing traces and obsessing over every trace angle, parts placement and other details that likely didn't matter in the end.
Photo

Post has attachment
This was a Rube Goldberg machine my son and I made for a class project several years ago to teach him about simple machines (levers, pulleys etc)

The premise of a Rube Goldberg machine is to take a "simple task" and make it complicated.

The auger portion of the video is a but slow but it did work. One we got it working I threw up the white flag. We turned the garage into a disaster area during the build.



Post has attachment
Disregard the fact that I took a picture instead of a screen shot...

I've been working on this board for weeks. I've been getting gnarly headaches too...

I now know why. The massive number of permutations regarding layout options is maddening and clearly causing me to stress (it's a project for work with deadlines).

If I route this here, change the layer there, move this down 0.001 inches then I can move this group of things over here and then shrink the board another 0.1 inches and maybe remove an entire signal layer thus reducing the cost of the board by $0.25... rinse and repeat...

I LOVE building things but there comes a point where it's detrimental to your health and while this whole project is I'm my "pay grade" of ability I think if I don't finish it soon I'll likely have a stroke (not quite joking either.)
Photo
Wait while more posts are being loaded