Single Regulator contains buck and boost controllers
https://www.electronics-lab.com/single-regulator-contains-buck-and-boost-controllers/
Linear Technology Corporation introduces the LTC7812, a dual output (boost + buck), low quiescent current synchronous DC/DC controller. When cascaded, its independent step-up (boost) and step-down (buck) controllers regulate the output voltage from an input voltage that can be above, below or equal to the output voltage, maintaining output regulation during cold crank and load […]
Bluetooth enabled Door locker using Arduino
https://www.electronics-lab.com/bluetooth-enabled-door-locker-using-arduino/
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 to connect with the locker and your smart phone to […]
Component Tester FISH 8840 Review
https://www.electronics-lab.com/component-tester-fish-8840-review/
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 many online eBay retailers for around $30. The interface is very […]
ATtiny 85 EMF detector
https://www.electronics-lab.com/attiny-85-emf-detector/
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 magnetometers measure DC fields, which occur naturally in Earth’s geomagnetic field and are emitted […]
Raspberry PI and DHT22 Temperature and Humidity logger
https://www.electronics-lab.com/raspberry-pi-and-dht22-temperature-and-humidity-logger/
“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 sensors for measurements. You might have seen similar kind […]
OpenCVMeter – Rediscover Your Capacitors
https://www.electronics-lab.com/opencvmeter-rediscover-your-capacitors/
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 own unique properties. Nowadays, ceramic capacitors are the most commonly used capacitors in the […]
Processing for Raspberry Pi
https://www.electronics-lab.com/processing-for-raspberry-pi/
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 I’m so excited that the latest version, Processing 3.0.1, now officially supports Raspberry […]
ARC Digital Amplifier
https://www.electronics-lab.com/arc-digital-amplifier/
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 high-resolution USB audio streaming capabilities, high quality aptX Bluetooth audio and […]
Toothbrushing Instructor
https://www.electronics-lab.com/toothbrushing-instructor/
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. I created a little […]
A development board for the STM32F042
https://www.electronics-lab.com/a-development-board-for-the-stm32f042/
Andy Brown designed a development board for the STM32F042 in the TSSOP20 package: This project came about because I’m using the STM32F042F6P6 (32Kb flash, 6Kb SRAM) in another project where I’m creating a USB device and the first thing I did is try to obtain a development board for it. I was hopeful that ST […]