Category: Electronics

Introduction This post talks about how to implement an Arduino wireless communication system using two HC-05 modules. These modules were introduced in Arduino Bluetooth Interface and they can be configured

In this post, we are going to show how to build a distance meter with an Arduino. An ultrasonic sensor is used to sense the distance and the

Introduction Passive Infrared sensors (PIR sensor) measure the heat radiated from objects and they are commonly used in motion detection alarm systems. They are called passive sensors as

This post explains how to add an RFID tag reader to your Raspberry Pi. You can read the unique ID numbers from RFID cards or tags and make

The HC-05 and HC-06 bluetooth modules are the most popular modules used by electronic students and tinkerers due it low cost. You can pick one off eBay for

The Raspberry Pi model 3, 1.2GHz quad core, 1 GB RAM version is out and we have decided to test Kodi on it. We have Kodi running on multiple PCs

Over the years, I have come across various security door access systems such as keypad access, magnetic strip, RFID tags and iButtons. I have found ibuttons and RFID

We, at BehindTheSciences, are great fans of the Raspberry Pi. We are also frequent users of Kodi. However we never actually tried running Kodi on the Pi. This

The latest Raspberry Pi was unveiled on the 29th of February and  we decided to acquire one to try it out. Physically, the Pi 3 looks very similar

In this article we discuss a UPS circuit powered from mains supply. The backup power is provided by NimH batteries.  Figure 1 : UPS schematic   The power

Introduction Radiation detection systems often consist of a detector, a charge sensitive pre-amplifier, a pulse shaping amplifier and a multi-channel analyser. The detector converts interaction of photon energy from an

We recently upgraded our internet to fibre (fibre to the cabinet) and we thought it was about time to upgrade our faithful Linksys WRT54G. As you probably already know,

The post briefly shows a circuit that could be used to transmit data optically (through the air) to a receiver. In this case, we made a circuit to

This tutorial post is on how to build a simple thermistor circuit. There is a variety of temperature sensors on the market all of which meet specific application needs.

This post describes the use of an ultrasonic sensor to measure distance of a target. The goal of this post is to help you understand how this sensor works