Musings, Updates, and Ongoing Work. Irregularly Updated.

16 Mar 2014

RC Car Modifications Update 2

I’ve “finished” a “functional” rc car, basically rebuilding the toy car I took apart months earlier but with in a more fine tuned but limited fashion. Currently it can drive (servo steering and motor control) under the direction of an Xbox 360 controller but it’s total range of motion is ~7 inches since it is still tethered to the power supply (and Beaglebone-USB-Computer).

23 Feb 2014

at HackMIT's Blueprint Hackathon

Yesterday (Feb 22) was the Blueprint Hackathon hosted at Google Cambridge. Team mmmYEP created crapfinder, a web page that serves up amusing curated shopping results based on a how much a customer wanted to spend.

21 Feb 2014

Using an Xbox Controller on Ubuntu and ROS

Curiosity struck again and so I decided to try and use an wired Xbox controller I had laying around as an alternate input method (typing in numbers wasn’t doing it for me anymore).

13 Feb 2014

RC Car Modifications Update 1

With the servos, IMU, and GPS wired to the Beaglebone and ROS installed, it’s time to put the pieces together!

12 Feb 2014

Generative Art

A last year I got particularly bored and delved into the world of generative art. I hacked together some admittedly crappy code in Java and got some pretty cool results. In hindsight I realize that I probably should’ve used existing frameworks such as cinder, Processing, or openFrameworks rather than build an entirely new project.

09 Feb 2014

Installing ROS on UbuntuARM 13.04 on Beaglebone

After flashing Ubuntu 13.04 onto the Beaglebone, I installed ROS Hydro. The dependency issues I had the first time around seem to have been resolved (collada wasn’t available on UbuntuARM). Installing ROS was painless, but involved.

09 Feb 2014

Beaglebone Internet Access Through USB

The following scripts are adapted from instructions on Robotic Controls.

29 Jan 2014

RC Car Modifications

Update 2014-02-13: added information about servo and motor controller

12 Jan 2014

Sensors and Interfaces with the Beaglebone Black

The BeagleCar needs sense of location and direction. This is where the GPS and IMU (accelerator/gyroscope) come into play. The GPS gives noisy readings in the current absolute position while the IMU can give rapid and fairly accurate readings on relative position. The GPS is also fairly slow 1-10 hz while the IMU can update much faster. Together, they combine both absolute position with rapid relative updates to yield (hopefully) sufficiently accurate location readings.

05 Jan 2014

The BeagleCar: Introduction

I’m making a self driving RC car for my senior project. It will be guided by GPS waypoints and utilize GPS data as well as inertial movement readings to accurately localize itself. I am also currently toying with the idea of cameras and distance sensors so the car/robot won’t be so “blind”. But that is a stretch goal far beyond my current capacities (need to get the car to move first).