- Touch Switch with Auto Off
Control almost any
electrical device with this simple touch switch. Automatically turns off a
short time later, adjustable from less than a second to over a minute by
simply changing a resistor.
- Ultrasonic Wind Speed Meter
A 'no moving parts' wind
speed meter using the Doppler Effect between two 40kHz ultrasonic
transducers. Uses a 2x16 LCD and PIC16F628 microcontroller (source code here). As published in the UK
electronics magazine Everyday
Practical Electronics, January 2003.