Sometimes we adults get to build our own robots. I’ve been working on a simple design over the last few weeks, not a competition robot (although competition legal) in as much as it would not be competitive for Sack Attack and was not primarily designed with competition in mind. It also has some deliberately built in limitations to allow (hopefully) it to be used to develop some more advanced software algorithms.
I plan to release the full design, CAD, bill of materials and software, so that anyone who wants could also build one (which is why I call it open source) or create an improved version.
The total cost (without batteries but with cortex) is $1470, batteries etc. adds another $130 so starting from scratch and buying all parts individually would cost $1600.
Here are a couple of CAD renders and a photo of the finished robot.
Sometimes!! You must be referring to Team Mentors… I get to build Designs ( Plagiarized or Otherwise ) all the Time…
From the First Look, I would guess I have ALL the parts to build this Robot… Except for the Vex Ultrasonic sensors ( I have a pair of Parallax ones… )
I like the Idea of “advanced software algorithms”… Better Living through Embedded Programming…
Will you include information on your Design Choices, like Gear Ratios and Motor Selection, Feedback Sensors and Locations of them, Materials Selection… Just about Anyone can buy the same parts and assemble them per your CAD’s, but knowing why a Part was chosen and why it was placed where it is on the Robot is a Valuable Lesson in itself.
Oh… Now your going to make me face how much I have spent on Vex Parts in the last 7 years. It’s easy to forget when you stick them in a box and hide them away…
Very Impressive… I have got to get good with 3DS Max or Solidworks…
Yes, I mean team mentors who are supposed to let the students do the work and keep their hands off the student robots (although I fail at this all the time).
It has the common sensors.
Line follower kit
Integrated motor encoders
My version also has a gyro and accelerometer but that’s another $80 and is optional.
It is also configured to use potentiometers for the arm instead of the IME but that then limits arm movement to 200 degrees rather than the current 300.
One example will be stability (anti tilt) control by using the accelerometer but I did not write that code yet. The wheel base was left on the short side to give marginal stability to see if this is possible.
I will be including this, one choice I made was to avoid cutting aluminum C channels so they can be more easily reused in future designs. This has made the height exactly 15 inches, that may be an area where if it were a real competition robot for Sack Attack it would have been done differently.
The renders are straight out on Autodesk Inventor, 3DS Max is on my to do list of software to learn.