28BYJ-48 Stepper Driver Keystone case by Anamenottaken

Last crawled date: 2 years, 12 months ago

I designed these boxes for use with the Open Astro Tracker project.
There are 2 types of cases. One to house the stepper drivers (uln2003) and RJ45 keystone jackclip, and one to house the RJ45 keystone jackclip alone. The standalone jackclip case is intended for the GPS/leveling modules and driver modules for the 2 steppers. The collection (2x stepper cases and standalone case) fit neatly along one side of the tracker.
They have been designed with these jackclips in mind (apologies for long link):
https://www.ebay.com.au/itm/184848210178?_trkparms=ispr%3D1&hash=item2b09cfd902:g:GloAAOSwrhBfVKUT&amdata=enc%3AAQAFAAACgBaobrjLl8XobRIiIML1V4Imu%252Fn%252BzU5L90Z278x5ickk8Fd9si%252FIbtWQr%252BhnlRwjDSqjlXtxJ8jCm2oSjN%252FACQgch2BeYdCMR7Lr4n5YH%252FFgiA3Ih86zRYXj%252FqiaYEDomVCFMEj9ap2X8nvYEoYO6nu5XDUaPQipINss%252BtvNf2w5QbRh5ejYQPw%252FUNXQt3ei8B9uEiiFC32Mh%252BXL7tN%252FKVNIN0Y%252F5ZDLdfkdX0uXYkp7ChdFNdORhNdOniW%252Fkpg6xC7PuAsNHZcoqOlBISCZSQAOMRQLVDYRD9OTxk3%252FfLXUpsKnY6CYElQvHqTSvj5GRKqx5L7%252F%252F5lAt4z0JSX4aHdhF3HpP150hMS9A9fG5dL3kxmbSw7BXk5lNPZa0nmhTUE0McG41gpvkNDyxvJzebgTiigts98F%252Fa2XBCnrmYUoon6UAnS%252F85bmXQRuH5wKQ6QHdyFlhe444U2nTlEeK%252BDDSaDGBK2EojF%252Fh%252BTym2Yv9FPaQ3u2wg0mmKR2PNVpY2WRnuYTyrz91TF4oe9nW4uSCk%252Bgl4N9Q7XlD67ebq6uCwVPP1d30Ep6nOO%252F5Vp9UoEO5yxix6VbeYOgWMhvGaPqs8KbGVF3lmAT9tESsICnROVuTzHrmxbuql30CvV%252FFVnLwE123S2Yl4Ms2Q%252FAI4%252Bhh%252Fv%252FQz0i5n0MwrxO%252FGu%252F4n2Mt0kx3FcEp%252Fp1ijiBai2AHfT5OFCYXGuRPWYFVYemChC7r%252B6tT3Gf4lwr2GeST13MP%252FlBLVZsvwEQybeNSKYMgPCgvwIqhoNOKJiGvEeltPk%252FPeqhNlrr5FQst0uNrE%252BXf6CRChaWNbj8a%252FLC99vcD0OHtZn7NGrB1XOpTqA%253D%7Ccksum%3A18484821017867d38c213de4491db79e65230ac9a8ce%7Campid%3APL_CLK%7Cclp%3A2334524
To fit them the bottom of the jackclips need to be cut/filed away (this will become obvious after printing. It's not difficult to do).
It would have been nicer to have the keystone points facing up so that wires could be added/removed without taking the jackclip out, but I found it's nearly impossible to click them in with the plastic spring facing upwards.
These have been designed to be fixed to a 20x20 L section with countersunk M3 screws and nuts and having the L section screwed to the T slot frame with M5 screws and T nuts (I hope the photo makes this clear). I did it this way because I wanted a bit of extra strength on the cases in case they were bumped in transit. All vertical holes drilled into the L section will need to be along the same line so that the M3 screws/nuts fall into the T extrusion channel.
I made these about as small as I could so that they wouldn't hang far off the tracker. Any recommendations let me know. I know these are partially redundant due to the MKS board being adopted by the project, but I thought I'd upload them in case anyone with an existing tracker would benefit from them.
I've also included a little cable guide because why not.