Archives: Projects

Introduction Hi guys, for today's tutorial, we will be building an Arduino on a breadboard. The Arduino on breadboard is basically a bare bones arduino, featuring only the micro-controller as the major component, without all the other parts that makes up the Arduino, like the USB port,...

This is a small size power supply based on OPA549 power op-amp that provides output voltage 1.2V to 25V with 0 to 10A adjustable current limit. Two onboard trimmer potentiometers provided to adjust the voltage and current, LED D1 is over temperature indicator. The circuit works with...

Introduction In one of our previous tutorials we did an introduction on how to use the Nokia 5110 LCD  with the Arduino, the tutorial covered displaying texts with different fonts etc. For this tutorial, we are taking things a little bit further and will be working through the display...

Hi guys welcome to this tutorial. Today we will be building a simple temperature monitor using the DS18B20 sensor with a Nokia 5110 LCD Display and an Arduino mega. Introduction The DS18B20 digital temperature sensor gives a 9-bit to 12-bit Celsius temperature readings and also has an...

This project provides 12V output from any USB power source, like PC USB port, USB adapter or power banks. LM2577ADJ boost converter IC is the heart of the project. The IC can handle load up to 800mA, it’s advisable to use only 200mA load on output to be on the safe side. The LM2577...

This is an industrial grade diffuse photoelectric sensor module which is based on Optical IC S8119 from HAMAMATSU. A diffuse reflection sensor is used for the direct detection of an object. The diffuse reflective sensor project consists of an Infra-RED LED and receiver. The IC also...

Introduction Hi guys, Welcome to this tutorial. Today we will build a breathalyzer using the MQ3 gas sensor, an OLED display and Arduino. A breathalyzer is a generalized trademarked name for  devices used for determining blood alcohol content from a breath sample. This means the...

General purpose differential amplifier project has been designed for various pressure sensor amplifier applications. Circuit provided with multiple resistors, capacitors, dual sensor options and 4 pin Header connector to interface other external sensors.  Schematic is an example from...