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Category Archives: Arduino

Arduino powered liquid/powder dispenser system

Posted on May 5, 2015 by R-B 2 comments

An accurate dispenser system for liquids and powder using Arduino. First things first, let’s put together the interface. It will make some of the calibration steps later a little easier. Starting with the LCD screen, and associated potentiometer dial (put on the pump circuit board), wire up a breadboard according to the diagram above. The potentiometer is only there to control the contrast on the screen, so it doesn’t need to be on the front panel, cramping the rest of the interface. Next comes the buttons. The two little button were salvaged from the scale circuit board, so you can

Yet another GPS tracker

Posted on May 2, 2015 by R-B Leave a comment

Here is another GPS tracker using Arduino that is aimed to assist people suffering from Alzheimer and Dementia by notifying their caretakers about their location. It consists of a GPS module, GSM module, Arduino and batteries all enclosed in a 3D printed case. When the GPS module is not within a user-specified boundary, the device will send a text message alert.

DIY GPS navigation using Arduino

Posted on April 29, 2015 by R-B One comment

This DIY GPS navigation system is built under $25 and uses Arduino with a GPS module and a 320*240 TFT to display the topographical maps stored as BMP files on an SD card. Based on the combination of TFT module and Arduino UNO fram Banggood and the GPS module from the same supplier I built a basic GPS navigation system that uses the topographical maps of The Netherlands (top25raster). In total there are 304 bmp files on an SD card, so the images are very detailed! In principle any 8 bit bmp map can be used. The maps were obtained from www.kadaster.nl,

Arduino banana piano

Posted on April 28, 2015 by R-B Leave a comment

Stian Eikeland’s capacitive touch banana piano is really cool. Check out the demo here: This weekend my niece-in-law is staying over, and to maintain my image as the crazy scientist uncle I’ve planned to make a banana piano (and lots of weird ice creams). In clojure there’s a pretty cool programmable audio environment called Overtone. Overtone features a decent sampled piano, and I’m thinking this could be a great basis for a banana-piano.There’s a couple of ways we can make bananas act as tangents, one of them is to use the bananas as capacitive touch sensors. Using a nice little hack

DIY bike speedometer

Posted on April 23, 2015 by R-B One comment

Check out this detailed build of Arduino-powered speedometer to monitor your bike speed on road. The project uses a reed switch to sense the rotation of one of the bike’s wheels. The Arduino reads in the reed switch closings and calculates the bike speed in mph. The calculated speed is displayed on a LCD screen. The speedometer is calibrated by defining the radious of the wheel in the firmware. Secure both the magnet and reed switch to your bike wheel with electrical tape (either wheel is fine). As shown in the images above, the magnet connects to one of the tire

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