Cookie Machine Project Update 2 @AppliedScience

Uploaded April 2013 | Updated September 2026, 2 weeks ago

I've got most of the subsystems on my cookie machine working so that I can dispense desired quantities of one ingredient (sugar). I'm using a UI developed using processing.org, which sends serial commands to a Parallax Propeller microcontroller.

DIY mass spectrometer measures potassium in dietary salt substitute

Temperature-sensing RFID tag in magnetic stir bar

pH indicating soap bubbles (Ben Krasnow - new channel name!)

Hydrogenation: transform liquid oil into solid fat

Bubble tube lamps - explanation and construction

$Use an oscilloscope to collect optical spectral data Im using my new Tek oscilloscope to collect data from a DIY spectrometer. The scope is in X-Y mode with infinite persistence. The X axis is controlled by the rotational position of the diffraction grating in the spectrometer, and the Y axis is controlled by the photomultiplier tube, which is detecting the spectra. In this video, I discuss the scope setup, and in future videos, I will talk more about the spectrometer, and how to use it.$

Mathematical integration without calculus

Handheld CNC router repairs old CNC machine

Gas-powered waterjet cutter (follow-up) and other project updates