Wahoo – The Affordable Smartphone Biped Robot (Video)

biped robot

Uncle Bob (a.k.a. Robert Lam) has taught numerous humanoid robot builders how to create smooth, realistic motions, has designed a new and extremely affordable biped robot named "Wahoo".

Capable of smooth walking using only three servos, Wahoo can also be controlled by an Android based smartphone. Uncle Bob has an iOS version in the works as well.

The robot stands approximately 15 cm tall and sports an Android shaped body shell produced on a 3D printer. The servos are low-cost 9 gram types with 6 AAA batteries hidden in the robots legs. Communication with the smartphone is via Bluetooth, so it should be possible to control the robot from any Bluetooth enabled computer.

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Affordable Stretch Sensor from AdaFruit Industries

Adafruit stretch sensor

I'm so incredibly jealous. Lady Ada over at AdaFruit Industries has all these great toys to play and experiment with, and she's figured out how to do it while enriching all of our hacker lives and making a little money to find more great stuff.

The 'toy' that triggered this post for me is some conductive rubber stretch cord that acts as a sensor. It's like being able to pull on the end of a resistor and have it's characteristics change linearly as it gets longer and shorter. Way cool! And it is incredibly cheap. She's priced it at less than ten dollars for a full meter and even includes a pair of alligator clips and a 10k resistor. Science teachers, for example, could dice it up and have enough for each student to have a piece for experiments.

The only drawback that I can see is that the sensor takes a little while to recover after being stretched, though I guess that could be compensated for in some applications by using two sensors in opposition.

As usual, the AdaFruit website has a great related tutorial page so you can learn while having fun.

(Via Conductive Rubber Cord Stretch Sensor + extras! ID: 519 - $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits.)

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Lady Ada and Phillip Torrone on Open Source Hardware (Video)

110920 Lady Ada-005.jpg

Lady Ada and Phillip Torrone stopped by Tokyo Hackerspace and were kind enough to explain the history, dynamic growth, and drive behind the Open Source Hardware movement. They are also the founders of AdaFruit Industries, a fantastic source for innovative and inspirational electronics and arduino kits that are actually useful.

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Old Electronics Kit Concept Made New (Video)

arduino sensor starter kit

My personal fascination with electronics and technology started at a very early age when Santa brought a simple electronics experimenter kit one Christmas Eve. All the components were laid out on a board and each one had small wire springs for terminal contacts. The instruction book included diagrams showing how to hook up the wires to complete each circuit.

I can't remember all of the experiments exactly, but I do know there was a switch triggered burglar alarm, some light circuits, and a crystal radio, among others. The 'radio' used a rough crystal with a cat's whisker probe with no application. Luckily we were living in Southern California at the time with at least one 50,000 watt broadcast radio station that I could pick up.

I was very intrigued, and pleased, to discover Andrew Alter, a leading humanoid robot designer, Mech Warfare organizer, and RoboGames champion, explaining the Electronic Brick Starter Kit, since it shows that the same basic approach is still very much in use today.

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