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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Electronic Projects

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  1. Electronic Projects 74
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Top resources

Most resources

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    51

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    31

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View all featured resources
Resource icon 3lectrix
How To: Test A Uni Junction Transistor 2011-07-03
You can easily test the health of a UJT (Uni junction transistor) by using a digital multimeter. Do
0.00 star(s) 0 ratings
Updated
Resource icon 3lectrix
Light Activated Switch 2011-09-04
The circuit is based on National Semiconductors comparator LM311 (IC1) and an LDR. The non invertin
3.00 star(s) 3 ratings
Updated
Resource icon 3lectrix
Dark Detector 2011-06-16
The dark detector circuit shown here can be used to produce an audible alarm when the light inside
0.00 star(s) 0 ratings
Updated
Resource icon 3lectrix
Digital Code Lock 2011-06-16
This is a simple but effective code lock circuit that has an automatic reset facility. The circuit
0.00 star(s) 0 ratings
Updated
Resource icon 3lectrix
Water Level Alarm 2011-12-29
This circuit will produce an audible alarm when the water level reaches a preset level.The circuit
5.00 star(s) 1 ratings
Updated
Resource icon 3lectrix
Police Siren (NE555) 2011-06-16
Here is the circuit diagram of a police siren based on NE55 timer IC. The circuit uses two NE555 ti
0.00 star(s) 0 ratings
Updated
Resource icon ElectroMaster
Computer Voltage Monitor 2011-06-16
This is an illustrated tutorial on building a voltage monitor for fan control circuits - rheostats,
0.00 star(s) 0 ratings
Updated
Resource icon ElectroMaster
Fan Control Circuit (LM317) 2013-05-19
This is an illustrated tutorial on building a variable voltage control for fans and other units, ba
5.00 star(s) 1 ratings
Updated
Resource icon MrDEB
DIY printed circuit boards My experiments and mistakes. 2011-06-15
New ArticleDIY Printed Circuit Boards for the home hobbyist methods and mistakes By Doug Bezaire
0.00 star(s) 0 ratings
Updated
Resource icon C
Simple Audio Signal Injector 2011-07-05
Here's a signal injector for those of us like me who don't have a bench full of nice test equipment
4.00 star(s) 1 ratings
Updated
Resource icon jakeselectronics
Digital Temerature Sensor 2011-04-27
This circuit is a Digital Temerature Sensor using a Dallas '1-wire' DS18B20 Digital Thermometer
0.00 star(s) 0 ratings
Updated
Resource icon C
Real-Time 'Stopwatch' 2012-09-10
This is a simple electronic "stopwatch" you can use to time an event. I used it when developing a d
0.00 star(s) 0 ratings
Updated
Resource icon OlPhart
Debounce Both States / Asm / Freescale 908 2011-06-13
I wrote this for toggle switches. It first looks for a change of state. If seen, it counts loops to
0.00 star(s) 0 ratings
Updated
Resource icon OlPhart
Debounce Active Low Switch / Asm / Freescale 908 2011-02-27
I wrote this for use on pushbuttons. It first looks for an active low state. If seen, it counts loo
0.00 star(s) 0 ratings
Updated
Resource icon Wond3rboy
C18 code for interfacing a PIC to a DS 12885 / DS 12887 2011-02-26
Hi, this is a code snippet for writing to and reading from the registers of a BQ3287(DS12885-DS12C8
0.00 star(s) 0 ratings
Updated
Resource icon languer
Basic IR Communications 2011-02-07
Creating an infrared (IR) communications link can be very useful. Some examples of projects which
3.50 star(s) 2 ratings
Updated
Resource icon languer
Simple Serial LCD 2013-04-08
Creating a serial LCD can be very useful for quick debugging; as well as projects requiring LCD sup
4.00 star(s) 1 ratings
Updated
Resource icon Boncuk
LM555 for Air Cannon 2011-08-27
The idea is to have two monostables timers (LM555) for triggering the air cannon. Timer1 (IC1) i
5.00 star(s) 1 ratings
Updated
Resource icon B
120v 4-LED Night Light 2011-11-13
This circuit uses can be used as a night light. It uses a 120v Mains to power the circuit. Works li
1.00 star(s) 1 ratings
Updated
Resource icon gramo
PS/2 (AT) Keyboard Module (Swordfish) 2010-10-03
[IMG]http://static.electro-tech-online.com/imgcache/10346-ps2_keyboard.jpg[/IMG] I recently wrote
0.00 star(s) 0 ratings
Updated

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