Wooden is an extremely versatile materials, however like all the things else, it has its limits. Construct a chair from weak wooden and the worst that may occur might be not that dangerous. However for those who construct machine instruments from wooden, the stakes for utilizing the improper wooden is usually a bit larger.
That’s the pondering behind the wooden power testing setup [Matthias Wandel] got here up with. Beforehand, he had a considerably jury-rigged check setup with a hydraulic bottle jack to use drive to the check piece and a rest room scale to make measurements. That setup was suboptimal, so model two used a jackscrew to use the drive, however the toilet scale nonetheless left the measurements open to interpretation. Model three, the subject of the video beneath, went with pressure gauges and an A/D converter related to a Raspberry Pi to automate knowledge assortment. The jackscrew was additionally built-in into the check setup with a stepper motor and, after all, [Matthias]’ well-known wood gears.
Whereas the check rig is fairly easy in design, there’s quite a lot of subtlety to the calibration to make it possible for it’s measuring the check materials itself and never simply compliance inside the mechanism. It’s simply one other in an extended line of data-gathering workouts that [Matthias] appears to groove on, like his current woodshop electrical explorations.