Battery Powered Frequency Meter (0 to 20kHz)
The circuit is a simple digital frequency meter that is made of a frequency-to-voltage converter and an analog-to-digital display converter that can be operatedfrom a single 9-volt battery. The TC7126 ADC generates the voltage required by the TC9400 FVC with internal regulators. The...
Continue ReadingMicrochip to Buy Atmel for Nearly $3.6 Billion
Microchip Technology to Buy Atmel for Nearly $3.6 Billion @ The New York Times. Microchip Technology agreed to acquire a fellow chipmaker, the Atmel Corporation, for about $3.6 billion, part of a wave of mergers and acquisitions within the semiconductor industry. Chip makers...
Continue ReadingArduino Distance Meter
Paoson Woodwork @ instructables.com has build an Arduino Based Distance meter using SR-04 Ultrasonic sensors and an LCD display: This a project I've been working for some time now. It is a device that shows in a little LCD display the distance to the nearest object it can find,...
Continue ReadingSamsung presents a bio-processor that wishes you well
by Denis Meyer @ elektormagazine.com writes about the new Samsung bio-processor: Samsung Electronics Co. announced recently the production in quantity of their versatile biometric IC with which the Korean giant is responding to the new trend towards quantifiable health. The...
Continue ReadingPlastic fingerprint sensor also detects underlining veins
FlexEnable, the leader in the development and industrialisation of flexible organic electronics, and ISORG, the pioneer in organic photodetectors and large area image sensors in printed electronics, have revealed the world’s first large area flexible fingerprint sensor on plastic...
Continue ReadingESP8266 mains energy monitor
Brian Dorey has designed a mains energy monitor based on ESP8266 that have sensors for the mains current, electric meter and gas meter. As the new solar logger did not have this functionality we decided to design a new data-logger that would measure not only the mains current usage...
Continue ReadingPower ON Delay Switch
Power-ON Delay Switch which can be used in all applications requiring a delay during power-on from 1 to 60 seconds. Specifications Supply input 5 VDC Relay output SPDT relay Relay specification 5 A @ 250 VAC Preset adjustable range function Power-On LED...
Continue ReadingChameleonMini – A Versatile NFC Card Emulator
ChameleonMini is a programmable tool for NFC Cards analysis and emulation. It helps you to emulate and clone contactless cards, read RFID tags and sniff RF data. The credit-card shaped ChameleonMini is a versatile tool for practical NFC and RFID security analysis, compliance and...
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