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GPS based car locator

Posted on April 19, 2015 by R-B Leave a comment

Keep forgetting where you have parked your car in the parking lot? This Arduino-based car locator uses GPS to remember where you park with just the push of a button and later tells you how far you are from it and in what direction. The GPS continuously reads the latitude and longitude of the CarTracker. When the button is pressed, the coordinates are saved to the EEPROM. E.g., this would be the location of your car. Now, let’s say you walk out of a store and are looking for your car. Power up the CarTracker. Do not push button. The

Making a high-altitude balloon cam

Posted on April 19, 2015 by R-B Leave a comment

Ray Visser posted an instructable on making a simple high-altitude balloon cam with minimal payload containing a smartphone to text its GPS location and a Canon Powershot digital camera to take pictures. High-altitude ballooning, or HAB, involves sending a payload of cameras, scientific instruments, or other items on a journey into the stratosphere, strapped to a weather balloon. When the balloon bursts, a parachute brings the payload gently back down, where it (and your data/photos/freeze-dried food) can be recovered! Most HAB systems are electronically complex, so we wanted to drastically simplify it. Our payload is only a smartphone designed to text

RGB Graphic Equalizer driven by ESP8266

Posted on April 17, 2015 by R-B Leave a comment

Amir Avni has shared the details of his cool RGB graphic equalizer build, which is controlled by the ESP8266 hardware programmed with the NodeMCU firmware. The RGB LED strings are controlled through WS2812, while the equalizer colors are chosen through a Web interface over Wifi. Two weeks ago I got my ESP8266 Version 12, which is a new version of the ESP8266 micro-controller with more GPIOs, so it seems some nice things can be done with it. If you haven’t heard of the ESP8266 check this older postfrom the blog. Also, I got the MSGEQ7 chip, which is a chip that outputs an analog equalizer from

Introducing Easy Pulse Plugin: A breadboard friendly and Arduino/chipKIT compatible pulse sensor

Posted on April 15, 2015 by R-B 12 comments

Today we are happy to announce the release of a new addition to our Easy Pulse Sensor series named Easy Pulse Plugin. Like its predecessors, the original Easy Pulse and Easy Pulse V1.1, Easy Pulse Plugin also operates on the principle of Photoplethysmography, which is an optical technique of sensing blood volume changes in tissues by illuminating the skin surface with a light source and measuring the reflected or transmitted light using a photodetector. The photodetector output contains the cardiovascular pulse wave, which is synchronized with the beating of the heart. Easy Pulse Plugin provides all necessary instrumentation and amplification on

Another DIY development board for ESP8266

Posted on April 14, 2015 by R-B One comment

Electro-Labs has posted a new DIY ESP8266 Development Board project to experiment with PIC microcontroller and ESP8266 module. The board features LCD display, pusbuttons, indicator LEDs, GPIO extension, FT232RL USB-UART converter over a Mini-USB connector, and 5V-3.3V bi-directional level converter circuits onboard.

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