Hackaday forum member [machinelou] says he’s been fascinated with remote controlled hamster balls for quite some time. Inspired by a ball bot he saw on a BBC show, he finally picked up a 12″ plastic ball and got to work.
He used a small drill to provide the power required to roll the ball, and an Arduino is used as the brains of the device. This is his first major project outside of simple I/O and servo control, so he’s taking things slowly. While all this is a bit new to him, he already has things up and running to a degree as you can see in the video below. In its current state, the ball is programmed to roll forward and backwards for a few seconds before going back to sleep.
His future plans include adding a servo-controlled weight to allow him to steer the ball as well as using a pair of Zigbee modules in order to control the ball remotely.
It’s a neat little project, and definitely one that would be a fan favorite among kids. Stick around to see a quick video of his bot’s progress thus far.
Continue reading “Ball bot constructed from power tools and pet toys”
Before [Steve] realized that it didn’t play nice with his network, he dismantled his Energy Detective TED 5000-G to see what made the device tick. He put together a nice teardown with high-res pictures throughout. Each component of the TED 5000-G is dissected, with the exception of the current transformers, which he claims are pretty boring anyhow. The gateway module is particularly interesting as it contains both an Ethernet interface as well as a 802.15.4 radio for wireless communications. While the device is still a bit expensive at the moment, the gateway module could be useful in projects requiring PLC or ZigBee communications some time down the road, once prices ease a little.
Wireshark, a tool recognized universally as being one of the best network analyzers available, has long been used by legitimate network professionals as well as a shadier crowd (and everywhere in between). While useful for analyzing both wired and Wi-Fi traffic, monitoring 802.15.4 protocols (such as Zigbee) have not been a common use in the past. [Akiba] of FreakLabs has brought us a solution which works around the normal limitations of Wireshark’s libpcap base, which does not accept simple serial input from most homebrew setups that use FTDI or Arduinos to connect to Zigbee devices. Using named pipes and a few custom scripts, [Akiba] has been able to coax Wireshark into accepting input from one of FreakLabs Freakduino boards.
While there are certainly professional wireless analyzing tools out there that connect directly into Wireshark, we at Hackaday love showing off anyone who takes the difficult, cheap, out of the way method of doing things over the neat, expensive, commercial method any day.
This setup helps to represent data in a meaningful way to for visually impaired people. It uses a combination of physical objects to represent data clusters, and audio feedback when manipulating those objects. In the video after the break you’ll see that the cubes can orient themselves to represent data clusters. The table top acts as a graphing field, with a textured border as a reference for the user. A camera mounted below the clear surface allows image processing software to calculate the locations for the cubes. Each cube is motorized and contains an Arduino and ZigBee module, listening for positioning information from the computer that is doing the video processing. Once in position, the user can move the cubes, with modulated noise as a measure of how near they are to the heart of each data cluster.
The team plans to conduct further study on the usefulness of this interactive data object. We certainly see potential for hacking as this uses off-the-shelf components that are both inexpensive, and easy to find. It certainly reminds us of a multitouch display with added physical tokens.
Continue reading “Data plotting for the visually impaired”
Culture Shock II, a robot by the Lawrence Tech team, first caught our eye due to its unique drive train. Upon further investigation we found a very well built robot with a ton of unique features.
The first thing we noticed about CultureShockII are the giant 36″ wheels. The wheel assemblies are actually unicycles modified to be driven by the geared motors on the bottom. The reason such large wheels were chosen was to keep the center of gravity well below the axle, providing a very self stabilizing robot. The robot also has two casters with a suspension system to act as dampers and stabilizers in the case of shocks and inclines. Pictured Below. Continue reading “Intelligent Ground Vehicle Competition 2010 Day Two Report”
The Intelligent Ground Vehicle Competition (IGVC) is the precursor to the DARPA Grand Challenge, and in many ways it is just as difficult. We have the pleasure of being at the competition this year with the Tennessee Technological University Autonomous Robotics Team. The teams at the competition pull off some amazing home-brew robotics, so we’ve decided to do a short section on some exemplary robotic hacking each day of the competition.
Today’s robot comes from the York College of Pennsylvania. The robot, dubbed “Green Lightning”, features an impressive set of custom made hardware.
We interviewed the team, and got a pretty thorough rundown of their robot with pictures after the jump. Continue reading “Intelligent Ground Vehicle Competition 2010 Day One Report”
After posting about our visit and interview with [Vemund], the Atmel rep at CES. We got the feeling you needed to know some more. The thing that has got us pretty excited is the ATmega128RFA1(pdf) single-chip microcontroller and Zigbee radio module. It can be found in the ATmegaRFA1-EK1 development board. We look forward to seeing future projects and products involving this chip. How would you use this chip?