Optically isolated stepper motor controller

5 Zone alarm circuit

This is a complete alarm system with 5

a A Basic RF Transmitter for PIR Sensors

alarm control keypad

The IC is a quad 2 input "AND"

active ir motion detector

Project Objectives To explore how different

Combination Lock (PIC16F84)

digital combination lock

The circuit above above makes use of the CMOS

Door knob alarm

Download

electronic combination lock

This circuit is an Electronic Locker. It is

Digital AVR frequency meter

Frequency meter with some of quite good

Automatically switches off DMM

The circuit in Figure 1 lets you

Create multicolored LEDs

It is well-known that simultaneously mixing

Voltage curves on PC

The circuit uses a programmable current

Ultrasonic Parking Sonar Schematic

It works on the sonar principle, sending an

Battery Solutions for Energy Harvesting

Rechargeable batteries ‒ known as

Simple Gas Leak Detector Circuit

Here is the gas leakage circuit uses the

FTDI Infrared

Here is hobby project of building a home-brew