Electronic Schematic Diagrams for Experimenters and Techniciansby David Herres Read about some of the options you have to create your own professional looking diagrams.
Projects
Build the Poor Man’s Seismographby Ron Newton A PIC-based, DIY seismograph that uses old school pendulum technology.
Build a Sound-Activated Laser Parking Systemby Paulo Oliveira If you’d like to break free from your “hanging tennis ball” method of parking, check out this approach which utilizes two ordinary low power laser pointers.
Column
Techknowledgey by Jeff Eckert TechKnowledgey 2012 This month, read about really twisted radio, no-compromise sound from your PC, a sonic screwdriver, plus some other interesting stuff.
The Spin Zone by Jon Williams The Spin Zone Back to the Beginning.
Q&A by Russell Kincaid Reader Questions Answered Here AC ammeters, battery internal resistance, and transformerless power supplies are discussed this time.
The Design Cycle by Fred Eady The Design Cycle Control Gadgets With Your Smart Phone.
Near Space by L. Paul Verhage Near Space Making One Camera Do the Work of Three.
Smiley’s Workshop by Joe Pardue Smileys Workshop: An AVR C Programming Series (Part 46) Chaser Light Marquee — Part 2.
Fundamentals For Beginners Build a Nose Beeper With this circuit, when you touch your friend’s nose you can make the speaker sound.
