With all the hardware and software required to operate a robot on a single 35x70mm PCB; the 3DoT is the brain, power, and the controller of any robot. Plug in motors, fire up the app, and you’re ready to go.
The 3DoT is supported by an extensive, easy-to-use Arduino library to allow the development of custom software, and the ArxRobot App to control your robot via Bluetooth. Even better, the Arxterra Control Panel that allows you to control your robot, remotely, from anywhere in the world, with high definition video and audio feed.
For more specialized purposes, Expansion Shields can be purchased, or, for the more hardware-savvy, designed from open source templates.
Everything about the 3DoT is designed with 3D printed, laser cut and other homemade robots in mind – from the small form factor to keep print times minimal, to easy USB charging on board.
Any and all feedback is welcomed, let me know in the discussion!
I think the layout could use some work, but the prototypes of the ARM 3DoT using an NRF52840 chip are doing great - being able to use almost any pin for anything makes the board a lot more flexible!
Of course, the AVR processor is still preferred for educational purposes, for ease of use explaining the 8-bit architecture and simple assembly language.
Both versions now also have a QR code to guide you to the app download and setup instructions. Funnily enough it seems like adding the QR code to the board made the PCB manufacturers increase the print quality of the silkscreen, since the rest of the silkscreen also looks sharper now.
If you believe in teaching from the ground up, this is something you will want to check out. Most engineering educational content starts at highest level, using graphical blocks and buttons to press, but we're going to try to use the 3DoT board to teach how things really work, instead of how to press buttons.
The workshop is two parts, each probably an hour long. By the end of the first workshop the students can make the robot's motors and lights turn on and off, and at the end of the second workshop it can follow a line drawn with black marker. All programmed in machine code.