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Timer from 1 to 999s with PIC16F84A

This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds.   This project  has 3 buttons and one of them is named Set Button. In order to [...]

PIC16F84A MemoSound Game

This example will show you how to build a PIC based simple memorization game system.
With only a PIC16F84A and a few cheap components, you will train your brain first to understand a few basics about PICs, second to play to a not that easy memory game !

Source: micro-examples

12 Channel LED Chaser with PIC16F84A

Today we have a new category “Projects” and a new electronic  project 12 Channel LED Chaser with PIC16F84A.
This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. The [...]

Miniature GSM Alarm System

This project used the popular PIC16F84A microcontroller which is a program written in assembly language. GSM phone with which the device was tested by Siemens M35i (19200bps 8-N-1). The device has to work with other (older, cheap) Motorola phones such as S25, C35 (i), A65 and so on (X35, X45) …

Source: Trax

GSM controller

This project (GSM controller ) is a device that allows you to control appliances using SMS messages. There are also 4 inputs for connecting sensors so the device will send an alarm SMS or even call you to report an alarm condition.
Autor of this project has been successfully tested on:
- Nokia 7110 (19200 bps, 8 [...]

Automatic Phone Recorder

How many times have you wished that you recorder your recent telephone conversation? I have, many many times. So thanks to [Trax] that he finally decided to make this happen by using PC and a piece of hardware (powered from USB) to record audio from phone line to MP3 format. He wanted this thing to [...]

PIC16F84 Thermometer

This is simple thermometer with just few components.
The brain is PIC16F84A and sensor is DS18B20. Range of sensor is -55 to 125°C is possible if ONLY the sensor is in that area not the whole device!

Source: maco

PIC16F84 Programmer

This Programmer,programs pic16f84a and pic16c84 very simple and works fine.

Source: maco

RC Servo Tester

The servo testers which can be found in shops are quite expensive and the shematics published here and there do not achieve the requested precision. Most of the time they are based on the famous NE555 timer IC and are limited to one function.
The use of a PIC (here 16F84 or 16F628) gives the opportunity [...]

DoorBell with PIC16F84

This project DoorBell was created by Quozl . He used microcontroller PIC 16F84.
A microcontroller driven doorbell circuit with features:
one second instant pulse output,
one second delayed pulse output,
two minute lighting output,
latching has been triggered indicator,
processor alive indicator,
ignore additional trigger for preset duration.
Source: Quozl

PIC Game System

Rickard have designed the hardware of the PIC video game system to be able to run several different kinds of games. It has two standard C64/Amiga/Atari joysticks and video and audio output. The processor is a PIC16F84 running at 12MHz and generates both video (PAL and NTSC) and audio in software.  The hardware design is [...]