Category Archives: Embedded Lab Projects


New power supply boards added to our Tindie store

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We have added two new regulated power supply boards and one general purpose double-sided prototyping circuit board (7cm X 9cm) to our Tindie store today. Both the power supply boards provide constant 3.3V and 5.0V power supply derived from an unregulated DC input ranging from 6.5-12V. One is designed to serve power supply for a breadboard circuit whereas the other one can be enclosed within the project box along with the project circuit board. The boards are designed for low power applications (600 mA). The breadboard version can be powered either from a DC wall wart or 9V battery (connector

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mbed powered automated Sun tracker

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Maximizing power output from a solar system is desirable to increase efficiency. One way of maximizing power output is by keeping the solar panels always aligned with the sun. This requires a means of tracking the sun. Here is an mbed powered solar tracker that continuously keeps track of the sun and points the solar panels directly towards the sun all the time. The project uses two smaller solar cells (besides the large solar pannels) placed right angle to each other. The alignment of the big solar panels and smaller solar cells is such that when the solar panels are directly facing

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Building a simple digital light meter using Arduino and BH1750FVI sensor

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A light meter is a device that measures the intensity of light. It finds applications in schools, hospitals, production areas, passageways and more to measure and maintain proper lighting levels. It is often used by photographers to determine the proper exposure for a photograph. Today we are going to build a simple light meter using an Arduino board and a BH1750 digital light sensor. The measured lighting level or intensity is displayed on eight seven segment LED displays, in both Lux and Foot-candle units.

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PC-based heart rate monitor using Arduino and Easy Pulse sensor

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The heart rate, also referred to as pulse rate, has been recognized as a vital sign since the beginning of medicine, and it is directly related to a person’s cadiovascular health. Today, we are going to make a PC-based heart rate monitor system using an Arduino board and Easy Pulse V1.1 sensor. Easy Pulse is a pulse detecting sensor that uses the principle of transmission photo-plethysmography (PPG) to sense the pulse signal from a finger tip. The sensor output is read by the Arduino board, which then transfers the data to the PC through a serial interface. A PC application

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Making a 8×40 LED matrix marquee using shift registers

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LED matrix displays provide flexibility to display text, graphics, animations, and video, and therefore, they have become a popular mean of displaying information these days. You can see them at gas stations displaying the gas prices, or in the public places displaying information, and alongside highways displaying advertisements on large dot matrix panels. This project is about constructing a mono-color LED matrix display board that consists 320 LEDs arranged in 8 rows and 40 columns. The heart of this project is PIC16F1847 microcontroller which receives data from a PC through a serial port (or USB using an USB-UART interface), and

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