Important note: The circuits on this website use various voltages and currents. If you are not confident in tackling any of these circuit ideas yourself, then for your own safety, get an experienced electronics technician/engineer to supervise or help you in constructing and testing.

(Links open a new window...)

Non Microcontroller based circuits:

Alternative Power - no more bills from the Power Company!

Amplifier

AM Transmitter

Control circuitry for a Cassette Deck - CMOS logic version

Fast NiCad charger

Stepper Motor and Driver

Adapter to get Cybot to work with your Mac in Virtual PC

Combinational Logic

Op Amp Circuits

 

Basic Stamp based: (program in basic)

A to D Conversion

D to A Conversion

AM/FM Tuner Controller board

Buses

I2C

USB

Control circuitry for a Cassette Deck  Microcontroller version

Datalogger

Displays

Driving an Hitachi HD44780 based LCD display

Driving Matrix Orbital Displays

Make your own 5 digit LED display - for connecting to Microcontrollers

Real Time Clock - I2C example

Javelin Stamp based: (program in Java)

Driving an Hitachi HD44780 based display  Driving Matrix Orbital Displays CoProcessors: - The PAK IX Floating Point Processor

8051 based: (program in C)

PS/2 Interfacing

Other stuff:

GNS Software Apps...

Easytrax for Mac OS - I have had a number of requests for copies of Protel Easytrax for Mac OS. After asking Protel for permission to provide copies, and getting permission, well here it is here. Note, Easytrax 1.02 was designed during the old System 6 days of the Mac. I can not guarantee it will work OK on anything higher than System 7 (it can crash under 7, but you'll save every 10 minutes, right?). Easytrax works OK under emulation under OS X, using various 680X0 emulators.