VOLTAGE DIVIDER worksheet
A worksheet for taking note of: The electrical resistance range of an analog sensor (Ohm). Picking a mean resistance in that range. Using a resistor of that resistance to build a Voltage Divider that will translate resistance into voltage. Taking note of the min and max voltage range this gives you. Connecting this variable voltage […]
Breathing Belt
Very simple solution for capturing the movement of the chest or stomach breathing using a stretch sensor knit from a stainless-steel & polyester yarn “sensor yarn”. Photos >> https://www.flickr.com/photos/plusea/albums/72157713915361228 HOW THE SENSOR WORKS The stainless steel fibers in the yarn are short, and the electrical resistance between them is high (when relaxed <1M Ohm). And […]