This post is about building a simple 0-5V 3 digit voltmeter using Arduino UNO compatible board and 4x20 LCD display. This design should also work on all similar boards, I’ve tested it on Arduino Mega and UNO boards.  No additional ...

This post is about building a Simple IR Proximity Sensor based on PIC16F877a micro controller. Usually these simple circuits are built using discrete components and include an OP AMP for comparing the photo diode voltage to a preset value. Current ...

In this post a basic character generator design based on PIC16F88 will be demonstrated. 7x5 Dot Matrix Display was used and its pin out is shown in the schematic below. Instead of using PIC16F876/7 microcontrollers PIC16F88 was chosen for this purpose ...

Here is a Basic PIC Frequency Counter design. For Arduino version click here. It doesn't not attempt to compete with some advance designs and has a very limited frequency range, however it can be used as a starting point to ...

Solar power mobile charger can be built by tweaking digital power supply schematic. The Software/Hardware stayed almost the same as the original circuit.Current design has the same overcurrent protection and output voltage can be changed by pressing SW1. Voltage and Current ...

In this article I’ll show you how to program Microchip PIC microcontrollers using HI-TECH PICC compiler and basic PIC development board. The board consists of PIC16F876A, LED bar graph and 20MHz oscillator. PICKIT3 compatible programmer was used to download the ...

A simple bargraph voltmeter can be built using 2x16 LCD or compatible VFD display. For Arduino version click here. This design utilizes PIC16F877 microcontroller and its ADC block to convert 0 – 5V input voltage to a binary number shown ...

Here is another fan controller design based on PIC microcontroller, this time it's temperature controlled and can be used to monitor Hard Drive temperature and adjust the fan speed accordingly or as a case fan controller. This post following recently ...

In this article I’ll show you how you can use PIC microcontroller to record and store waveform patterns in its EEPROM memory and replay the sequence later. For this purpose we’ll need a signal/waveform generator to produce the signal, PIC ...

In this post I’m going to show you how to interface an I2C Real Time Clock – RTC with PIC microcontroller. Only a basic hardware configuration and a communication protocol are presented here. I’m planning to extend it to a ...