This just in from Jason Williams.
I was just poking around looking at other drawbots and came across this awesome complete list of drawing robot prior art. Links: Der Kritzler by Alex Weber Polargraph by Sandy Noble Polargraph Instructible, Google code wiki, setup guide Flickr set, Vimeo Sandy’s note about enabling drawing of squares Printed Polargraph by John Abella John’s printed Polargraph Flickr […]
I managed to get the new gondola design installed on the baby sized drawbot. I already see a lot of problems. For instance I could mount the pen at the top of the gondola instead of the bottom. And have the ballast towards the problem. Also the elastic attachment point could be better. Either way […]
So I cooked up some parts to repair the drawbot that was shipped the other day. Took a couple extra days since I blew up the laser and had to fix it first. Sort of like the old song “There’s a hole in the bucket”. You have to fix one thing to fix the other. […]
I was very pleased to receive this drawing of Mr. Drew that was done on the feedback forms form the art gallery. The child drew the drawbot. 🙂
I redesigned the spools using a lug nut to hold four layers together. Also, the holes are the threads are such that when you tighten the lug nuts, the hole shrinks so they clamp onto the motor shaft.
I think I will add a kickstand to my gondola design. As you can see in the pictures below I’m using a pencil to keep the pen from running while I’m starting the machine. The software does have a servo lift programmed but I’ve not added a servo to the gondola yet. I suppose I […]
The show is going well in San Antonio. Three more months to go. 🙂
Here’s an interesting drawbot (make article).
A bit of spool slip in the Texas installation. It’s been corrected. Everything is working now except we need to now load the machine dimensions into the controller so the geometry works out. They said they “LOVE” the machine.
Now that your drawbot is installed and working here are some finer points on using the polargraph technique. 1) The configuration file has the following parameters. If you match the sizes in the file to the actual dimensions, then the geometry will work out properly. Example: Step: 7.5 degrees, 360/7.5 = 48 steps/rev. Gear box: […]
I’ve been enjoying this project quite a bit and am doing a round of improvements before I make a batch of these machines. Basically I have a few friends who want them and I think it’s a great opportunity to learn about the robot-human relationship by supplying these machines. So today, I hope to finish […]
Sandy Noble has lines working on his drawbot project. Have a look at this awesome video!
Once you have your drawbot wired up and connected to your computer (but the controller is not plugged to the 120V wall outlet) you’re ready for software! There are lots of ways to program Mr. Drew. I have a collection of software including Arduino, Processing, Sandy Noble’s software that is ready to go. 1) Unzip […]
I spent about 10h in the lab making a new gondola, electrical cabinet and new spool holders for the drawbot. I compressed it into a 2m video for fun. I had to make a few metal parts as well by cutting off some 1/4-20 rod. I did some redesign of the gondola so it has […]
I’m running the biggest job yet. The system is estimating quite a bit of time, I may need to pause it at night as it needs supervision at this point for ink supply. The processing side is running very low, I think the drawbot controller needs to reboot. I’m getting quite a bit of ink […]