Fun & Games

The latest DIY ideas, techniques and tools for bikes, rockets, R/C vehicles, toys and other diversions.

Rocket motor design software

Rocket motor design software

BurnSim ($39) is a solid rocket motor ballistic simulation program (Windows only) now in its third version. In a nutshell, input your motor, nozzle and propellant characteristics and BurnSim calculates the Kn (kilonewton) through the burn and predicts estimated chamber pressure and motor performance. Once your motor design is in BurnSim, you can tweak the […]

LEGO camel feet contest

LEGO camel feet contest

Fay Rhodes, LEGO Mindstorms NXT author, is holding a contest to find an alternate foot for a camel design. The wheel used as feet for my camel design came from the Education Resource set, but now LEGO has exchanged that wheel for another that lacks the TECHNIC pin holes–making it unusable for the foot. I […]

PS2 controller -> MIDI converter kit

PS2 controller -> MIDI converter kit

The Midiator kit converts a Playstation 2 controller for MIDI use Supports official PS2 controllers, cheap knockoffs and wireless controllers Analog joysticks control pitch bend and several controllers (or whatever you want them to do) Buttons either trigger notes or toggle controller signals LCD and menu system for mode switching (controller vs. note triggering) and […]