20151103_223737He may not look like much right now, but STEVE is an evolving project I’ve been wanting to start for quite some time. He is a robot, into which I will combine software, hardware, and mechanical design.

Currently STEVE is an AVR microcontroller and LM298 dual motor driver, strapped to a circa 1985 remote control car. Over the last few days, I began laying the foundation with serial communication, motor control, and power. In the next few weeks, I should receive the first order of parts to give STEVE senses.

Initial Sensors:20151103_223750

  • Ultrasonic range sensor
  • 9-Degrees-of-freedom Intertial Measurement Unit (with compass)
  • DS18B20 Temperature Sensor
  • USB WiFi Adapter
  • LM298 Motor Driver (a better unit)

Once progress is made with these first parts, I also plan on including these additional sensors:20151103_223743

  • GPS
  • Servo (to pivot ultrasonic range sensor)
  • Current Sensing
  • Webcam

This is a great wish list, but without the software to tie it all together, not very useful. Therefore, I’m assigning my Raspberry Pi 2 B+ as STEVE’s brain. My vision is for the Pi to do all the heavy processing such as navigating, making 20151103_223817decisions, and hosting the user interface for mission planning. That way, the AVR is only a hardware controller that manages Input/Output, and communicates bi-directionally with the Pi.


Over the last week the project has evolved very rapidly, and a new body is in the works. My 3D printer has some serious overtime coming up, as I begin designing and printing STEVE’s mechanical components. The ability to print new wheels, mounts, gears and body components is critical to the success of this project, and will also mean I can be very flexible with how everything is implemented.

I have a lot of freedom to do really cool things with this, and I look forward to posting regular updates on STEVE’s progress here!

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Sunday, November 8th, 2015 electronics, projects, software, steve

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