4 Channel Large Current Relay Board
4-Channel Relay Board is a simple and convenient way to interface 4 relays for switching application in your project. The project has large Relay which can switch current up to 20Amps. Specifications Input supply 12 VDC @ 360 mA Output four SPDT Relay Relay specification...
Continue ReadingDIY Home Energy Meter
A new tutorial by The DIY Life is for building a home energy meter that provides information about power consumption and cost estimates for the month. Using Arduino and some other components you can build your own energy meter that measure the supply current to your home through a CT...
Continue ReadingArduino Installing and Using Libraries
runtimeprojects.com has a tutorial on how to install and use Arduino libraries. Libraries are an essential part in the Arduino world. They are what makes Arduino so easy to use. Libraries are written to encapsulate complex functions and expose them as simple function calls to the...
Continue ReadingESP8266 sending data to Google spreadsheets
Although there are so many cloud IoT platforms (ThingSpeak, thinger.io, TESPA.io, Xively, … ) available in the market, each offering APIs and tools to allow the Arduino and ESP8266 users to directly upload their sensor readings online for real-time visualization and global access,...
Continue ReadingDIY Pixel Art Frame Using Raspberry Pi Zero
Have you ever wanted to get an interesting art frame? That can display and flip photos, scroll text, show the weather or display social media notifications? Frederick Vandenbosch’s new tutorial is for building an art frame using 32x32 LED matrix and Raspberry Pi Zero. Electronics...
Continue ReadingTemperature sensors accurate to -40°C
by Denis Meyer @ elektormagazine.com: With a local (on chip) precision of ±1°C over a range of temperature from –40°C to +65°C, and a remote (up to 3 external sensors) precision of ±1°C extended up to +125°C, the MCP990X digital temperature sensor offers an economic and...
Continue ReadingA health patch a day keeps the doctor away
Belgian Imec and its subsidiary Holst Centre have developed a health patch which tracks physical and cardiac activity while monitoring bioelectrical impedance. The technology is up for licensing. by Jan Buiting @ elektormagazine.com The health industry has recognized the challenges...
Continue ReadingAmbient light sensor for heart rate sensing in wearables
Everlight (New Taipei City, Taiwan) has introduced an ambient light sensor that operates at 550nm with a very low signal calculation failure rate and a high current efficiency. An anticipated application for this device is heart rate signal detection in wearable electronics for the...
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