Telephone operated remote control using PIC16F84A microcontroller

This design controls up to 8 devices using a PIC microcontroller (PIC16F84A) connected to the phone line. The unique feature here is that unlike other telephone line based remote control, this device does not need the call to be answered at the remote end so the call will not be charged. This device depends on number of rings given on the telephone line to activate/deactivate devices. 1. Circuit diagram (de ...

Read more

PIC16F84A LCD interfacing code (using 3 pins only) + Proteus simulation

This post provides the LCD[1] interfacing code using only 3 pins of PIC16F84A microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that you know how to make an LED blink with PIC16F84A microcontroller. If you don't then please read this page first, before proceeding with this ...

Read more

Interfacing of PIC16F84A with (i2c based) 24LC64 EEPROM (Code + Proteus simulation)

This post provides the code for interfacing 24LC64 EEPROM with PIC16F84A microcontroller. This 24LC64 EEPROM has i2c based interface and PIC16F84A doesn't have any built in i2c modules, so software i2c module is created in the code. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that yo ...

Read more

Four way traffic light signal using PIC16F84A microcontroller:

Hi friends, today we are going to make a four way traffic light controller using a PIC16F84 microcontroller. In this project we will operate three LEDs (RED, YELLOW, and GREEN) according to the traffic rules. Illumination of the green light allows traffic to proceed in the direction denoted, Illumination of the yellow light denoting, if safe to do so, prepare to stop short of the intersection, and Illuminat ...

Read more

Teddy nightlight multicolor using PIC16F84A microcontroller

Teddy nightlight multicolor A nice night light multicolor, ideal for baby's room. For the realization I used: - Out of a pack of bubble bath for children in the shape of teddy bear - a nightlight with positive economic pressure - Complete circuit with a PIC16F84A (I was at home, but you can use any programmable microcontroller) - LED multicolor I started preparing the teddy bear, all the markings on the pac ...

Read more

Interfacing of PIC16F84A with DS1307 (RTC) code and Proteus simulation

This post provides the code for interfacing DS1307 RTC with PIC16F84A microcontroller. This DS1307 RTC has i2c based interface and PIC16F84A doesn't have any built in i2c modules, so software i2c module is created in the code. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that you know ...

Read more

How to use PIC16F84A pin as input (Code+Proteus simulation)

This post provides an example code to use PIC16F84A pins as inputs. After going through this example, you will understand how to make PIC16F84A pins as inputs and how to read their value in the code. This code is written in C language using MPLAB with HI-TECH C compiler.You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that you know how to blink an LED with PI ...

Read more

PIC16F84A Gas Detector using GH-312 sensor

Introduction This is a gas detecting circuit capable of sensing many different types of gases.  The sensor used is the GH-312 and from the datasheet it is capable of sensing gases like smoke, liquefied gas, butane and propane, Methane, alcohol,hydrogen, etc. Schematic Parts List R1                   1K resistor R2                   1K resistor P1                    100K potentiometer C1                   10 ...

Read more

PIC16F84A timer0 code and Proteus simulation

This post provides the timer0 code for PIC16F84A microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that you know how to blink an LED with PIC16F84A microcontroller. If you don't then please read this page first, before proceeding with this article. The result of simulating ...

Read more

PIC16F84A LED blinking code + Proteus simulation

This post provides the code to make an LED blink using PIC16F84A microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. This code is intended to be the first step in learning how to use PIC16F84A microcontroller in your projects. You can download this code from the 'Downloads' section at the bottom of this page.Following figure shows the minimum circuit required to make an ...

Read more
Scroll to top