The heart rate, also referred to as pulse rate, has been recognized as a vital sign since the beginning of medicine, and it is directly related to a person’s cadiovascular health. Today, we are going to make a PC-based heart rate monitor system using an Arduino board and Easy Pulse V1.1 sensor. Easy Pulse is a pulse detecting sensor that uses the principle of transmission photo-plethysmography (PPG) to sense the pulse signal from a finger tip. The sensor output is read by the Arduino board, which then transfers the data to the PC through a serial interface. A PC application is developed using Processing programming language to display the received PPG signal and instantaneous heart rate.
PC-based heart rate monitor using Arduino and Easy Pulse sensor - [Link]
startingelectronics.com has a very clear tutotrial on how to read analog voltages using Arduino:
Analog channels A2 to A5 on an Arduino Uno are used to measure four different voltages. The measured voltages are displayed on a 16 character by 2 line LCD. The four channel Arduino multimeter can measure four independent DC voltages that can each be in the range of 0 to 50V. Voltages are displayed with one decimal place, e.g. 5.3V, 12.8V, etc.
Arduino LCD Voltmeter with 4 Channels - [Link]
The Yun board for Arduino aims to take DIYers into the cloud. The Yun is the first of a family of low cost, low power Arduino boards that run Linux and support Wi-Fi, following the trend toward the Internet of Things (IoT). Yun, named for the Chinese word for cloud, is designed to let the average tinkerer link a new Linux gadget to the Web using a simplified browser interface.
Yun links to the Web via the Hornet AR9331 Wi-Fi chip from Qualcomm Atheros, which supports 2.4 GHz networking and runs a custom distribution of Linux. The Yun roadmap features five products and two separate product families, including some boards designed to run up to four years on two AA batteries. [via]
Arduino Takes You into the Cloud - [Link]
Do you want to many processors on one board? Check this out. UDOO is an open hardware, low-cost computer equipped with an ARM i.MX6 Freescale processor for Android and Linux, alongside Arduino DUE’s ARM SAM3X, both CPU integrated on the same board! UDOO takes your DIY projects to the next level and it’s a powerful tool for education and creativity. UDOO could run either Android or Linux, with an Arduino-compatible board embedded.
We are delighted to announce a new mini-Pc board, UDOO, which integrates two processors, ARM i.MX6 by Freescale (for Android & Linux) and ARM SAM3X of Arduino DUE in a single board measuring 4.33 inch x 3.35 inch (11cm x 8.5cm).
On April 9th we launched a Kickstarter campaign which already reached the target of $27,000 in barely 2 days and keeps growing having raised 1700% over its target.
UDOO was conceived to both expedite the rapid prototyping of professional solutions and to support teaching activities in the field of physical computing, internet of things and interaction design. With the goal of promoting the use of the board in these domains we have built an international network of 5 universities: Carnegie Mellon University, USA; Aarhus University, DK; Siena, IT; OCADU Toronto CA; University of California San Diego, USA in order to share teaching experiences and to present solutions to create an open community accessible to everyone.
UDOO: Android Linux Arduino in a tiny single-board computer - [Link]
“miceuz” have set up this little experiment to gain a better understanding how does a SAR analog to digital converter work. Go to http://wemakethings.net/2013/02/25/how-does-adc-work/… for more info and Arduino code.
How does an ADC work? - [Link]
This code show a basic example of using the color library to make a rainbow appear on RGB LEDs. By varying the hue the rainbow function moves across the whole visible color spectrum.
HSB RGB Arduino Color Library – [Link]
The Spark Core is an Arduino-compatible, Wi-Fi enabled, cloud-powered development platform that makes creating internet-connected hardware a breeze.
This little board packs a punch: with a 72 MHz ARM Cortex M3, the best Wi-Fi module on the market, wireless programming, and lots of pin outs and peripherals, there’s nothing you can’t build with the Core.
Spark Core: Wi-Fi for Everything (Arduino Compatible) - [Link]
Olympia, WA, April 29, 2013, Olympia Circuits introduces the Arno Shield to expand their line of products for new Arduino users. The Arno Shield contains all the components necessary to learn Arduino programming when plugged into an Arduino compatible board without any messy wires. The original Arno Learning Kit was introduced last year and received a great response as an innovative approach to learning the basics of electronics and Arduino. The shield provides another way for new users to dive into the world of Arduino and breaks down barriers to learning about microcontrollers.
The Arno Shield will be available for purchase at olympiacircuits.com on May 2nd.
The Arno Shield shares the same features of the Arno, but in a familiar shield form factor. Bring your own Arduino compatible board, drop in the shield and start learning to write sketches.
The Arno Shield comes with the well regarded book “Learn Arduino with the Arno” which gives step-by-step instructions for more than forty projects. All the components for the projects are built into the Arno Shield, so no wiring is necessary, just plug and play. The Arno shield, like the original Arno, is fully compatible with the Arduino programming language and integrated development environment.
To allow for a wide range of learning projects, the shield includes the following devices:
- Four green LEDs
- One RGB LED
- One infrared LED
- Two momentary pushbutton switches for digital inputs
- One thumbwheel potentiometer to introduce analog measurements and controls
- One piezo element to create tones and measure vibrations
- One phototransistor to detect infrared and visible light
- An I2C digital temperature sensor to introduce between-device digital communication
Users of the Arno have enjoyed the ability to dive right in to programming without messing with wires and small parts. Like the original Arno, the Arno Shield and an Arduino compatible board make a good travel kit that wonʼt get you hung up in security. For more information see the product page at http://www.olympiacircuits.com/arno-shield.html and contact firstname.lastname@example.org.
Olympia Circuits announces the Arno Shield - [Link]
A wireless mesh Arduino board with USB, LiPo battery charger, built in range testing and over-the-air programming… cheap enough to leave in your project!
Gregor @ inDevice.ca have developed a low cost wireless Arduino board. It is based on the ATMega128RFA1 and uses Atmel’s wireless mesh stack. It also has a built in V-USB port for the bootoader and serial terminal and is fully compatible with Arduino. Some other unique features weʼve added is built-in range testing and wireless programming. There is a new video up showing two wireless boards working together and accepting commands from a WiFi shield. Right now they have a page up on Indiegogo, check it out.
miniSWARM – Scalable Wireless Arduino Radio Module - [Link]