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The In The Air Challenge is running from September 22nd to final submission date of February 27th (at midnight). Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The…

The In The Air Challenge is running from September 22nd to final submission date of February 27th (at midnight). Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The…

The In The Air Challenge is running from September 22nd to final submission date of February 27th (at midnight). Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The…

Bluetooth protocol Everytime I search something in the opensource community, a quote from Isaac Newton comes into my mind "We are dwarfs on the shoulders of giants" It's unbelievable the health of information is available for you to give form to all your…

Memory retention AirMobile sensor is going to be switched off abruptly whenever the Peltier cell does not provide enough energy. I need to save application status to resume execution properly after a "black-out" The MSP430FR MCUs features an internal…

The In The Air Challenge is running from September 22nd to February 27th. Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The Air Challenge 2014 Blog Summary #003 :…

The AirMobile case While struggling to find a cheap 3D printing service to print the sensor case, (this challenge is actually costing me more than I planned!), I saw just in front of me a nice case from Wurth Elektronik I noted down the dimensions of…

Representing data on the map In this post I will talk about the representation of data collected by AirMobile on a map. Representing data o the map is the easiest way to understand the locations to avoid when doing outdoor activities. The solution I was…

Low-power delay The CCS ULP Advisor tool is a great tool because it provides useful hints to squeeze microampers out of an application. One of the suggestions was to get rid of delay loops. So I investigated how to implement a delay using timers. Implementation…

RAM Execution While building the AirMobile application, a noticed some warnings from the ULP Advisor tool. In particular, the warning was about floating point operations, which are said to be processor intensive and consume many instruction cycles, which…

Bluetooth module The AirMobile sensor will communicate with the smartphone using a Bluetooth module. The obvious choice for an application that harvest energy from wasted heat should be to use a module that supports Bluetooth LE technology. However, because…

Finally I got the PCB from WE direct!! And it included a complimentary cake!

The In The Air Challenge is running from September 22nd to February 27th. Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The Air Challenge 2014 Blog Summary #003 :…

Previous posts AirMobile - 11 - MQTT Java Client AirMobile - 12 - AirVantage REST API AirVantage OpenHAB binding After creating an helper class for accessing the data stored in AirVantage, I am now ready to implement an OpenHAB binding. With such a binding…

AirVantage REST API In the previous post, I created a Java MQTT client to push data into the AirVantage cloud platform. Next step is to read it out and make it available to OpenHAB. In this post I will talk about the AirVantage REST API, whereas in the…

The In The Air Challenge is running from September 22nd to February 27th. Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The Air Challenge 2014 Current Activity: Blog…

MQTT Java Client MQTT is a light-weight protocol initially developed by IBM for transferring telemetry data. It' based on the publisher-subscriber paradigm: a device can publish data into the system and many receivers can subscribe to get data changes…

The In The Air Challenge is running from September 22nd to February 27th. Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Blog Summary #001 : In The Air Challenge 2014 Current Activity: Blog Summary #003 : In The Air Challenge 2014 Blog…

The In The Air Challenge is running from September 22nd to February 27th. Previous Activity: Blog Summary #000 : In The Air Challenge 2014 Current Activity: Blog Summary #002 : In The Air Challenge 2014 Blog Summary #003 : In The Air Challenge 2014 Blog…

The In The Air Challenge is running from September 22nd to February 27th. Current Activity: Blog Summary #001 : In The Air Challenge 2014 Blog Summary #002 : In The Air Challenge 2014 Blog Summary #003 : In The Air Challenge 2014 Blog Summary #004 : In…