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...

Visuino is the latest software developed by Mitov Software which allows you to program your Arduino boards using a graphical interface. So far only the official boards are supported but more will come. Using Visuino you can easily create complex programs using drag and drop interface...

Joonas Pihlajamaa wanted to connect his keyboard to his Macbook and for that reason he build a MIDI to USB interface using Teensy board, an optocoupler and some resistors. Thankfully, I had a MIDI connector and a high-speed optocoupler at hand, and with these I could implement a MIDI...

OSHChip is a general purpose processor board based on ARM Cortex-M0 32 bit processor running at 16 MHz. It includes 2.4 GHz Bluetooth Low Energy radio and a broad range of built-in Peripherals. It features 256 KBytes of Flash memory for program and data and 32 KBytes of SRAM. All this...

by Harry Baggen @ elektormagazine.com STMicroelectronics has launched their second-generation distance senor VL53L0, which is based on STM’s popular FlightSense technology. This sensor is suitable for use in smartphones and tablets to make quick distance measurements for an...

Jacob Beningo @ edn.com discuss on how to select the right mcu for your next project based on hardware and software architecture. Selecting the right microcontroller for a product can be a daunting task. Not only are there a number of technical features to consider, there are also...

This unipolar stepper motor driver circuit is used to drive a 12V unipolar stepper motor with a current rating of 1.25A. It uses PCA9537 IC, which is a 10-pin CMOS device that provides 4 bits of General Purpose I/O (GPIO) expansion with interrupt and reset for I2C-bus/SMBus...

Edward Mallon @ edwardmallon.wordpress.com gives us a detailed explanation about cheap RTC modules found on ebay and other places. I built the first few beta units with the DS3231 Chronodot from Macetech (about $18 each), but I kept on stumbling across cheap RTC modules on eBay,...