Category Archives: Arduino

Control your Arduino with Scratch over Bluetooth

Posted on 14. October 2015 by holadiho

Yes, really. Scratch is this wonderful MIT visual programming toolbox that you can get for free in many different languages. Its an excellent starting point to teach children how to program. But you can go even further: Some weird spanic … Continue reading →

Posted in Arduino, educational | Tagged , , , | 1 Comment

Waking up an Arduino with Input from a Sensor

Posted on 23. June 2015 by holadiho

Currently i am investigating ways to wakeup an Arduino out of deep sleep mode with an IRQ Event. If you think of low power standalone measurement applications, this can be very interesting, because the board can sleep with very low … Continue reading →

Posted in Arduino | Tagged | 2 Comments

Building a cellular tracker: Part 8 – the Case

Posted on 1. April 2015 by holadiho

As described earlier my cellular tracker did not only have a couple of electrical and software challenges – running autonomously in the wild also would require a safe housing for it, something that can handle rain, high and low temperatures, … Continue reading →

Posted in Arduino | Tagged , | 1 Comment

Finding Europe with Lights – a pan-european Internet of Things installation

Posted on 12. March 2015 by holadiho

One of the reasons why i wanted to have this cellular tracker was a proposal i made to the founders of re:publica – the biggest web- and blogger conference in Berlin, that takes place on May 5th to 7th this … Continue reading →

Posted in Arduino, Maker-Movement, Society | Tagged , , , , | Leave a comment

Building a cellular tracker: Part 7 – Please welcome ArduFona

Posted on 28. February 2015 by holadiho

If you followed the previous posts on this matter, it’s not a surprise that i was thinking of a custom board sooner than later. So here it is – Ardufona: It is a low-power Arduino which runs straight from the … Continue reading →

Posted in Arduino, gsm | Tagged , | 5 Comments

Building a cellular tracker: Part 9 – Solar Power

Posted on 12. February 2015 by holadiho

One of the more exciting tasks while building up a cellular tracker is the Solar-Power part. Below i will describe my first results – this article will be updated later on when i am running some more tests and gathered … Continue reading →

Posted in Arduino, electronics | Tagged , , | 2 Comments

Building a cellular tracker: Part3a – Circumventing unreliable Watchdog with external 555 timer

Posted on 24. January 2015 by holadiho

In my current endeavor to build a cellular tracker that can run autonomously for months i stumpled upon a strange problem during outdoor tests which could only be resolved the hard way… Initially i intended to use the built in … Continue reading →

Posted in Arduino, electronics | Tagged | 2 Comments

Building a cellular tracker: Part3 – Running on Batteries for Months

Posted on 2. January 2015 by holadiho

As described earlier, i want to create a cellular tracker – below i am going to describe what i learned about power-consumption and why i believe that the tracker could run on batteries for months… My goal is to have a … Continue reading →

Posted in Arduino, gsm | Tagged , | 3 Comments

Building a cellular tracker: Part2 – The Board Decision – Adafruit Fona vs. Linkit One vs. ArchGPRS

Posted on 30. December 2014 by holadiho

As described earlier, i want to create a cellular tracker – below you find my considerations regarding the board… My decision regarding the board was directed into the Arduino direction quickly. Raspberry was out because of power requirements, even the new … Continue reading →

Posted in Allgemein, Arduino, gsm, Raspberry Pi | Tagged , , , , | 2 Comments

Building a cellular tracker: Part1 – Overall requirements and considerations

Posted on 27. December 2014 by holadiho

As described earlier, i want to create a cellular tracker – below you find my core-requirements. The idea is to deploy these trackers to places far out and in the wild, on trees, under waterfalls or even in a drift … Continue reading →

Posted in Arduino, gsm | 3 Comments