It was something like this:
The device itself is quite simple, because in contrast to the plotter uses the same rotation, which is easier to obtain than linear.
Because of the upcoming Easter holidays I wanted to created a device as soon as possible.
Not silyl in the manufacture of its electronics only used the not very well-liked by me Arduino platform.
HARDWARE
Due to the fact that I have not found any project which is 100% that could serve (other mount motors, etc.), I decided to draw whole again.I used openscad programs and QCad. The entire set of files can be found on my thinkiverse.
In addition to the printed parts the following parts were needed:
- thread rod M10 + washers and nuts
- thread rod M3, bolts M3 + washers and nuts
- 2x bearings 6000
- RC servo
- arduino UNO
- 2x stepstick
- 2x step motor
- spring (I got one from desoldering pump)
- piece of rubber
- marker pen
ELECTRONICS
Time was important to me, so i try to adopt model on http://pleasantsoftware.com/developer/3d/spherebot/ during the trial, however, I introduced some changes in the project. The final version is shown in the diagram:
In addition, I made a simple single-sided board so that electronics was nicely integrated into the structures of the device. Due to time constraints, I made PCB myself using a thermotransfer method.
FIRMWARE
I used the firmware from: https://github.com/zaggo/SphereBotI only modified pinout maping and the parameter DEFAULT_PEN_UP_POSITION
so that when you print finishing servo was kept in the upper position.
To compile the firmware you have to overdub two libraries to arduino:
SOFTWARE
I draw the model in vectors in Inkscape.To generate gcodes I using a plugin to the program: https://github.com/martymcguire/inkscape-unicorn
The generated code sent to your device using the application processing environment:
https://github.com/zaggo/SphereBotSenderProcessing Though really you can use any simple terminal program.
How does it work:
Video from first test below:Similar construction:
