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Another Raspberry Pi camera

Posted on April 29, 2015 by R-B Leave a comment

Check out this Raspberry Pi powered compact camera that uses PiJuice, an all in one battery module, to power the device. I’m so excited about this new project! A truly compact and portable Raspberry Pi Camera and it’s easy as anything to build! I first thought about building a Raspberry Pi Camera after seeing theSnapPiCam instructable guide. This is a clever little project, which uses a LiPo battery to power a Raspberry Pi model A. But it got me thinking could I do something even more compact which is even simpler to build? The real challenge is powering this little baby.

Open-source ground penetrating RADAR

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

Open ground penetrating RADAR is an ongoing open-source project initiated by Glenn Powers as his entry for the 2015 Hackaday Prize. The aim is to make a Raspberry Pi powered RADAR system to look into the Earth for less than $500. Commercial ground penetrating radar systems cost thousands of dollars. This project aims to create an open hardware alternative for about $500, using a Raspberry Pi with PiMSO to save data for later analysis and send instantaneous results to a web browser on a tablet or smartphone. A Baofeng VHF/UHF radio is used a signal generator, which transmits via a Transmit/Recieve switch

Adding a PID temperature controller to a regular soldering station

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

Mike Doughty has posted an article showing how to add a PID temperature controller to a regular sodering iron for better performance. Some plug-in soldering irons are adjustable. Some models have a temperature adjustment built into them and function like a light dimmer. Although better than units without any kind of temperature control, they are somewhat limited. I was looking at PID temperature controllers and learned that they worked with K-type thermocouples. Then I started looking at K-type thermocouples and I thought that there may be a way to insert one of them inside a soldering iron and take a reading from the back of the heating

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

SubPos: A non-GPS based local positioning system

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

SubPos is a WiFi-based local positioning system designed using PIC microcontrollers and ESP8266 modules by Blecky on Hackaday.IO. SubPos is an indoor positioning system that can be used in various environments such as metro lines, shopping malls, carparks, art galleries or conference centers, essentially anywhere GPS doesn’t penetrate. SubPos defines an accurate method for subterraneous positioning in different environments by exploiting all the capabilities of Wi-Fi. SubPos Nodes or existing Wi-Fi access points are used to transmit encoded information in a beacon frame that is utilised for position trilateration.

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