FM Oscillator Circuit

Here’s a dandy circuit for a VCO and buffer that operates across the entire FM broadcast…

Pressure Sensor Circuit Diagram

Pressure Sensor This sensor is based on the Lucas NovaSensor NPC-410 Series pressure sensor. The circuit…

Home Brew Temperature Sensor

Temperature Sensor Radio Shack sells a very small Thermistor (Cat. No. 271-110 for $1.99) that can…

Galvanic Skin Response Sensor (Smartphone Version)

Galvanic Skin Response GSR or Electrodermal Activity is the study of the change in human skin…