DIY Breathalyzer Using Arduino UNO

DIY Breathalyzer Using Arduino UNO

Today I am going to discuss how to make a very simple DIY Breathalyzer using Arduino UNO and few external components.


2.7V-4.2V input to 3.3V output Buck-Boost Converter

2.7V-4.2V input to 3.3V output Buck-Boost Converter

This project shows a DC-DC buck boost circuit which can produce an output of 3.3V for an input of 2.7V to 4.2V , for example from...


Human Motion Powered Nanotechnology Devices

Human Motion Powered Nanotechnology Devices

Michigan State University researchers have came up with a new method for harvesting energy from human motion using nanotechnology.


4.5A H-Bridge DC Motor Driver Module Using TB6549HQ

4.5A H-Bridge DC Motor Driver Module Using TB6549HQ

The H-Bridge Motor Driver Module Based on TB6549HQ IC from Toshiba, is a full-bridge driver IC for DC motors that uses an LDMOS...


Buck regulators accept up to 40-V input

Buck regulators accept up to 40-V input

by Susan Nordyk @ edn.com: A wide input range of 4.5 V to 40 V enables the TS3004x series of DC/DC synchronous buck regulators...


Making An Arduino I2C Digital Clock

Making An Arduino I2C Digital Clock

Using Adafruit’s 0.56″ 7-segment LED backpack and display and the DS1307 RTC (Real Time Clock) board, this tutorial will guide you...


New Thermoelectric Paint To Convert Heat Into Electricity

New Thermoelectric Paint To Convert Heat Into Electricity

Scientists at the Ulsan National Institute of Science and Technology have developed a thermoelectric coating that can be directly...


3 MilliWatt-Consumption Data Glasses

3 MilliWatt-Consumption Data Glasses

Data glasses display information to the eye without interfering with the wearer‘s vision but they run energy down very quickly d...


PCB Rax – A modular system for holding circuit boards

PCB Rax – A modular system for holding circuit boards

The PCB Rax is an easy to use, versatile printed circuit board holder for repair, prototyping , and assembly that can hold nearly...


Low-cost current monitor tracks high dc currents

Low-cost current monitor tracks high dc currents

Susanne Nell @ edn.com has a design idea on how to measure high dc currents.


Top 10 Online Circuit Simulators

Top 10 Online Circuit Simulators

Online circuit simulators are getting more popular day by day.


3D Printed Organ-On-Chip

3D Printed Organ-On-Chip

Researcher at Harvard University had been working to build new microphysiological systems (MPS), also known as organs-on-chips,...