DanOctober 25, 2018 at 10:12 #20999
in zarplotter.ino there should be a method called IK(). it takes the cartesian coordinates and converts them to motor steps (aka belt lengths).
Acceleration is trapezoidal and is calculated in motor.ino. You can adjust acceleration within a G command by adding an A value. M114 will tell you the current A.
Keep me posted on your development, please!monkmartinezJanuary 21, 2019 at 11:03 #21657
I am very interested in building the Zarplotter. However, I have a few questions…
1. Are there instructions on the assembly of what is currently working included in the BOM purchase?
2. How much, roughly, will it cost to build assuming I have a 3d printer but none of the electronics or hardware (nuts, bolts)
3. Plans for future development?DanJanuary 21, 2019 at 11:36 #21658
1. No. I know a few people have built one. Perhaps this is an opportunity to make a kick-ass youtube video 🙂
2. 4 steppers + arduino + motor shield + some nuts and bolts + 4m? timing belt + blue servo + a board + sharpie + a power supply. That’s the minimum. Your price varies with availability and shipping.
3. I don’t currently have plans myself as I am busy with another robot. A future idea would be springs between the belt and the plotter head to allow a bit of flex; better way of holding the belt against the pulleys; and some way to drop off one pen and pick up another of a different color (automatic pen changer).monkmartinezJanuary 21, 2019 at 15:12 #21665
Fair enough and thank you for the response!
I am actually printing the parts for the MPCNC as we speak. I was hoping for an intermediate project before I jumped in with both feet on the CNC with RAMBO board and all that. This looks like a good candidate but I am torn between this, a SCARA, or one of the AxiDraw knockoffs… or something with a bit more documentation so I can learn that parts that I simply don’t know.DanJanuary 22, 2019 at 00:29 #21666
In another thread we’re looking at building the makelangelo 6 from some very inexpensive components. would work for zarplotter, too. join us?
You must be logged in to reply to this topic.