How to wire Arduino w/GRBL for Parallel Port Control

 

So in this episode we are going to look at wiring the  Arduino running  GRBL to a parallel port CNC machine control yet before you get too concerned this is actually a pretty simple project as what we’re going to cover are the pinouts from the Arduino and matching them up with the opinions of the standard parallel port again most of this is simple soldering to a DB 25 connector which we will plug into the parallel port.

Key Links:

Probotix Pinouts: www.probotix.com/wiki/index.php/PBX-2

Arduino w/GRBL Pinouts:github.com/grbl/grbl/wiki/Connecting-Grbl

Flashing an Arduino UNO with GRBL v0.9i for CNC Control

 

So we’ve been doing a lot of experimentation in the lab lately with motion control and one of the latest projects we’ve been working on is converting our Probotix Fireball V 90 from parallel port control using Mach 3 to using GRBL on the Arduino as a replacement.  The reason for this is we want to take advantage of the many second-generation programs out there such as Easel and others which streamline the workflow of the CNC process. However one of the first challenges is getting GRBL on your Arduino itself and to do this we took a quick scan of the Internet and couldn’t find any good videos demonstrating how this process works, so the next step was to create one of our own and in this video we will show you how to flash the Arduino and send commands to GRBL and more importantly where to find all this in addition below we have placed the key URL links to what you will see in the video there so they are easy to find.

Flashing Grbl to an Arduino

github.com/grbl/grbl/wiki/Flashing-Grbl-to-an-Arduino

Compiling Grbl

github.com/grbl/grbl/wiki/Compiling-Grbl

Github Zip Download

github.com/grbl/grbl

28BYJ-48 Gimbal for GoPro Style Camera

 

So we finally got it done, the 28BYJ-48 stepper motor gimbal we downloaded and remixed from Thingiverse (www.thingiverse.com/thing:794786 and www.thingiverse.com/thing:325876).  This project was so cool, it involved 3D printing, electronics and code writing.  What more could you ask for, oh and a camera too! Well check out the video and the Thingiverse links for the gimbal & tripod are above and the links for the GoPro arm and gimbal base are on TinkerCad here (www.tinkercad.com/things/1xm4ZRDMeuy-gopro-to-28byj-48-mount and www.tinkercad.com/things/kkIE3qFwVO1-28byj-48-gimbal-base).  Also a link to the 28BYJ-48 stepper motors can be found below along with the XYZprinting Da Vinci 2.0 Duo 3D Printer which was use to print this out with an Arduino controller.

XYZprinting Da Vinci 2.0 Duo 3D Printer, Grey

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Tripod 3D Printed from Thingiverse

So when you need something what is the first thing you do?  Well if you have a 3D printer it is to visit Thingiverse and look for what you need, download it and print away.  Well that is what we did when we needed a small tripod for the gimbal project we where working on.  It turned out so well we created a video as if you need a small tripod, this is worth the plastic.  One extra note is you will have to also design and print you inter-bushing for the 1/4″ 20 TPI rod, we liked this as it also allows us to customize things a bit.

Tripod link: www.thingiverse.com/thing:325876

XYZprinting Da Vinci 2.0 Duo 3D Printer, Grey

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Arduino & Perfboard Holder from Thingiverse

Since we have been doing a lot in the lab lately with the Arduino, we decided to print a holder from Thingiverse to hold both the Arduino and Perfboard as one unit.  Well the STL is great, but the print didn’t come out so good as since the last firmware release on the XYZprinting Da Vinci 2.0 Duo 3D Printer they seem to have dropped the bed temp from 90 deg-C to 70 deg-C which is on the low side we have been using rafts to hold prints down, however with the large surface area this one got away from us and we had edge curling.  Watch the video and you can see it happen.  Well the world didn’t end and it still worked however it did not look as nice as it could of.

XYZprinting Da Vinci 2.0 Duo 3D Printer, Grey

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New 28BYJ-48 Stepper Motor & Board Mount

In the lab this week we designed the new 28BYJ-48 stepper motor & board mount which can be used with either the Arduino or the Raspberry Pi for automation or robotic projects.  The STL can be found over at TinkerCad (www.tinkercad.com/things/4TAvPHsP07x-28byj-48-motor-and-board-slide-mount) and while we do have a few more changes we would like to do, we do plan on sending a version up to Shapeways when we are done as again is a great little board for building all kinds of projects!

XYZprinting Da Vinci 2.0 Duo 3D Printer, Grey

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