Month: November 2015

Frank Donald @ gadgetronicx.com has build a bluetooth controlled door locker using Arduino. Source code included: DIY Arduino based lockers can be found plenty in the internet where keypad was used to feed lock input. But this Bluetooth enabled Door locker uses Bluetooth as a medium...

Alan Parekh @ hackedgadgets.com has a review of a cheap component tested he found on ebay. This device can test bipolar transistors, MOSFET, diodes, thyristors, resistors and capacitors. He writes: This is an inexpensive component tester called the FISH 8840 which you can find from...

arduinomaster @ instructables.com has build an EMF detector based on ATtiny85 mcu able to detect signals from 0-999Hz. He writes: An EMF meter can measure AC electromagnetic fields, which are usually emitted from manmade sources such as electrical wiring, while gaussmeters or...

"jjpfin" @ instructables.com build a Raspberry Pi based temperature and humidity datalogger using DHT22 sensor. Data is stored on mySQL server and can be viewed on browser. This is an Raspberry Pi based temperature and humidity logger that uses 2 (works also with 1) Adafruit DHT22...

OpenCVMeter is an open source tool to measure capacitance and leakage current as a function of a capacitor's working voltage. When designing circuits, many hobbyists take capacitors for granted - but each type (ceramic multi-layer, aluminum electrolytic, tantalum, mica...) has its...

Matt Richardson announced that Processing programming language is now supported by Rasbberry Pi. He writes: I’m a long-time fan of Processing, a free open source programming language and development environment focused on teaching coding in the context of visual arts. It’s why...

Enjoy high-end sound quality for all your music with this small and modern digital amplifier. The ARC was made to bridge the gap between high-end sound quality and the world of digital music. Designed as the perfect receiver and amplifier, this ultra-compact unit provides...

jckelley @ instructables.com has build a tooth brushing help tool using LinkIT ONE Board and an LCD screen: Kids just aren't huge fans of brushing their teeth. Not only are they not huge fans, they also are pretty bad at it. Teaching a young kid to brush their teeth is really hard....