Samsung presents a bio-processor that wishes you well


by Denis Meyer @ 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 Bio‑Processor was conceived to enable rapid development of innovative portable systems for the daily monitoring of the health of users. Samsung says it is the first all in one IC solution for the health market. Apart from the Microcontroller itself, the power control circuit (PMIC), the digital signal processor (DSP) and the flash memory, no less than 5 analog front ends (AFE) are integrated on chip: a bioelectrical impedance sensor (BIA), a photoplethysmography (PPG) (a technique for non-invasive vascular function analysis), an electrocardiograph (ECG), a skin temperature sensor and a Galvanic Skin Response (skin conductance) sensor (GSR).

Samsung presents a bio-processor that wishes you well – [Link]

Plastic 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 designed for biometric applications. With an 8.6 cm x 8.6 cm active area, 84µm pitch (78µm pixel size with 6µm spacing) and 1024 x 1024 = 1048576 pixel resolution, this revolutionary flexible sensor is only 0.3 mm thick and can operate in visible and near infra-red up to wavelengths of 900 nm. The technology is capable of measuring not only the fingerprint, but also the configuration of veins in the fingers, providing additional security versus that of a surface fingerprint alone.

Plastic fingerprint sensor also detects underlining veins – [Link]

ESP8266 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 but also keep track of the electric meter and gas meter so we can easily see how much energy we are using in the house.
The new mains energy monitor was designed to be a standalone box that would be powered from the mains and have sensors for the mains current, electric meter and gas meter. As we didn’t want to run any more wires around the house we also decided to make it wireless connecting to our network over Wi-Fi.

ESP8266 mains energy monitor – [Link]

Power 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.


  • Supply input 5 VDC
  • Relay output SPDT relay
  • Relay specification 5 A @ 250 VAC
  • Preset adjustable range function
  • Power-On LED indicator
  • Screw terminal connector for easy relay output connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 44 mm x 42 mm

Power ON Delay Switch – [Link]

ChameleonMini – 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 penetration tests, and various end-user applications. The freely programmable platform can create perfect clones of various existing commercial smartcards, including cryptographic functions and the Unique Identifier (UID).

ChameleonMini – A Versatile NFC Card Emulator – [Link]

Visuino – visual programming environment for Arduino


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 without the need to become expert in programming. Check it out on the link below.

Visuino – visual programming environment for Arduino – [Link]

MIDI to USB Adapter with Teensy


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 in rather easily. After some investigation with Arduino Uno, it seemed quite simple to receive the serial MIDI bytes and dump them over Arduino serial

MIDI to USB Adapter with Teensy – [Link]

OSHChip – general purpose processor board in DIP format


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 functionality comes in a tiny DIP like package which is compatible with a breadboard thus making prototyping an easy task. OSHChip is an open source project and all design files are available on github:

OSHChip – general purpose processor board in DIP format – [Link]

VL53L0 – Ultra-fast distance sensor


by Harry Baggen @

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 integrated camera, but it can also be used in robots, drones and wearables.

Despite its compact dimension of 4.4 x 2.2 x 1 mm, the VL53L0 integrates a vertical cavity surface-emitting laser (VCSEL) operating at a wavelength of 940 nm, a single-photon avalanche diode (SPAD) light detector, and a microcontroller that controls the entire measurement process and calculates the measured distance. Using a 940 nm laser in combination with integrated infrared filters makes the detector insensitive to ambient light, and the laser light is not visible to the human eye.

VL53L0 – Ultra-fast distance sensor – [Link]

10 steps to selecting a microcontroller


Jacob Beningo @ 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 business case issues such as cost and lead-times that can cripple a project. At the start of a project there is a great temptation to jump in and start selecting a microcontroller before the details of the system has been hashed out. This is of course a bad idea.

10 steps to selecting a microcontroller – [Link]