The Arduino Team was present at the conference and gave an awesome talk. It was enlighting and humorous.
The Arduino team includes Massimo Banzi, David Cuartielles, Tom Igoe, Gianluca Martino and David Mellis. They mention the addition of a lady to their team (I’ll get her name later).
They told the history of Arduino as well as shared what they learned.
It has a lot in common with my Squirrel project. For instance, the Arduino project started much before they turned it into a business. They said that this made it very challenging to get the business stuff taken care of. With Squirrel, the value of having it out on the internet long before I turned it to a business permitted it to propagate virally and gain acceptance. It allowed me lots of time to contemplate and make the right choices with the design. It also allowed a lot of feedback and I learned a lot from early adopters. Some gave me inspiration to continue the project.
So this extra challenge of conversion to a business is well worth it because this incubation period allows the project to gel properly and for you master the domain expertise necessary.
Their talk was also very validating since I am already very subscribed to all the ideas they put forth as their lessons learned.
I just rewired Baby Drawbot so that the controller is more portable.
Interestingly the steppers I have are wired A+ B+ B- A-. Seems you could then revers them by reversing the connector.
But the easy drivers are A+ A- B+ B- which is more logical for your brain. So I crossed over my connectors so I could do a straight plugin instead of the crazy conversion wiring you see in the picture.
Okay I’m making another draw bot so we can have one floating around at ArtEngine.
I have a pair of steppers (much like the ones on my current drawbot). So I’ll use those.
For this one, the motor mounts will be removable from the main drawing space sheet. So they can be mounted individually or like the V1. So it will be possible to make large drawings. Perhaps I’ll just convert both to this system.
This will be a “community edition”. I will invite people to try it.
Anybody have any extra steppers? Let me know and I’ll make them into a drawbot for you. 🙂
I think an arduino drawbot is a total blast. I want to make more of them and am looking at the different ways of controlling steppers with the arduino.
Easydriver is one mechanism. They are about 15.00 each at Robotshop. So that comes out to 30.00 which isn’t too terrible. You can even run three of these if you want to do cnc. That comes out to 75.00 to run a three axis CNC including the Arduino. Not too bad for a small hobby project. But for drawbot that’s a bit steep.
The Adafruit motor shield is a better deal for a drawbot. It’s only 20.00 and it can run two servos and either two steppers or four DC motors. Way more bang for the buck.
What are good ways to get the price down even further?
Cheap Stepper Motors
I have some steppers that were given to me and were pulled out of printers. What’s a good motor (perhaps with gearbox) that’s affordable?
I joined the Ottawa Robotics group to learn more about robotics, automation, computer control and such. They’re a friendly group that meets about once per month at Algonquin College. We usually go for a brew at Chances-R or Darcy’s pub. This is a great way to meet other robot heads and not only get lots of help from new friends but to cheer on other projects.
Here’s a video to get a feel for the meetup. You can see a cool model helicopter, some mini-sumo robots. People usually bring in a robot project to show off and talk about.
Here are a few pictures from the last meetup. We were offered a tour of some of the CNC robotics at the college.