Robert Lang is a professional electrical engineer interested in embedded microprocessors, mechanical musical instruments, and MIDI. He is a freelance writer for electronic hobbyist, computer, and synthesizer magazines. He can be reached by email or by a GOOGLE search for HARPSITRON.
PIC Video - Part 2
Last month, I described the hardware necessary to build a unit that will allow one to do video text overlay with a PIC microprocessor. We will conclude this month with the software programming of the microprocessor, testing the system, and experimenting with the techniques of subliminal messaging.
High Stepping Automatic Coil Winder
Have you ever thought of a project where you needed to position an object with great precision? Maybe you wanted to build a precision milling machine or maybe a computer plotter. My introduction to precision positioning came about from a need to wind wire coils for solenoids. Coils are used for all kinds of electrical applications – from solenoids for electromechanical actuators to coils for electric motors.