Make stuff with ropes and poles
Shannon writes in about a new blog all about making thing with ropes and poles – here’s the latest “I set a challenge to my scouts to design a pioneered wheelbarrow during our recent troop camp, and this is the result- Kingfishers patrol built a wheelbarrow complete with wheel cut from a log. Construction is very simple- 4 thin spars lashed together with square lashings, a “cradle” woven between them, and a wheel with a tent peg axle. Very fast wheelbarrow, still looking solid six months down the line, it now hangs in front of their patrol den.” Link.
Stefan writes “A nice detailed description of Oregonian Adrian Carbine’s record-setting amateur rocket flight. Powered by twin “N” motors, the two-stage model soared to over 40,000 feet. Dimensions: Length: 17’4″, sustainer dia: 4.25″, booster dia: 4.6″. Pad weight: 96.5 lbs. Weight without motors: 43.5 lbs (including parachutes, tubular nylon, electronics, avionics bays, CO2 systems, etc.). The entire airframe weighed 28 lbs empty.” 
Monopole writes in about an open source 3D camera – “Stereoscopic Camera and Camcorder Synchronizer using the commonly available LANC camera control ports. Based on the Atmel ATMega8 microcontroller. Both the software and the hardware is open source, with board layouts on the website.” 
We’ve had a few emails and posts about folks who wanted to build their own lie detector, here’s one (and how it works) – “The circuit diagram of the Lie Detector is shown above. It consists of three transistors (TR1 to TR3), a capacitor (C1), two lights or LEDs (L1 & L2), five resistors (R1 to R5), and a variable resistor (VR1). Suitable transistors to use are BC547, BC548 or BC549, or any other small NPN transistor. The Lie Detector circuit works based on the fact that a person’s skin resistance changes when they sweat (sweating because they’re lying). Dry skin has a resistance of about 1 million ohms, whereas the resistance of moist skin is reduced by a factor of ten or more.” 
Harvey writes “Where US Taxpayer’s have already bought the best equipment (Like $2,000 hammers) and you can pick up it up for a faraction of its original cost. Get electronics and test equipment, pumps and motors, battaries and computer equipment by the pallet! Buy entire pallets of parts at a time and make the impractical dream a reality! NOTE: Read the fine print and watch out for shipping costs!” 
Jason from Preshrunk writes “The gang over at Vestal Design have made and documented a really killer bar made out of somewhere in the neighborhood of 700 discarded library books. Well, I know I’d totally make one if I had that many books laying around.” 
