Autoranging Digital Multimeter

This is an old article from Practical Electronics 1979. It shows the input circuits and digital ranging controls too. Using 7107 chip for display it is an excellent project to build even today. Try...

CAn Remote Automation-Control

CARACA is a home automation project based on a net of interconnected programmable circuits suited to perform different tasks like switch on/off appliances, decode commands from Ir remote control units, control thermostats, measure temperature...

Home Automation – Edward Cheung

This centralized system can control almost all of the lights in my home, a few appliances, the garden irrigation, some window treatments, the Audio/Video system, the security system, and the HVAC (Heating Ventilation and...

EdSim51 – 8051 Simulator

A virtual 8051 is interfaced with virtual peripherals such as a keypad, motor, display, UART, etc. The student can write 8051 assembly code, step through the code and observe the effects each line has...

VeeCAD for Stripboard with Auto Router

VeeCAD takes a schematic generated netlist and assists you to build a layout – but on stripboard (Veroboard). The usual design tools are provided: netlist import, component footprint definition, component positioning, wiring and connectivity...

QRZ Ham Radio

QRZ was founded in 1992 by Fred Lloyd, AA7BQ as a spinoff of what was once called the “Callsign Project”, a cooperative effort designed to obtain and distribute FCC database tapes. QRZ remains a...