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Category Archives: electronics
Building a cellular tracker: Part 9 – Solar Power
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
Building a cellular tracker: Part3a – Circumventing unreliable Watchdog with external 555 timer
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
Low Power Arduino
Today i assembled my first hand-made Arduino on a Breadboard – it’s really amazingly simple and done within 10 minutes. The reason why i am doing this is power – i want to create an autonomous tracker that can work … Continue reading
Glowing House with Conductive Ink
Today we (my two daugthers, 7 and 10 and myself) tried the glowing house kit by BareConductive (you can get it for 25EUR at exp-tech in Europe). It comes as a nice package with a good (english) instruction. You fold … Continue reading
Mind the basics (power, ground, wiring)
I am not an electrician. I am a psychologist. But the beauty of the Maker-Culture is also that the invitation to play around with electronics is getting much broader than it used to be – even i can design a … Continue reading
Posted in Arduino, electronics, Raspberry Pi
Tagged GPIO, power-supply, Raspberry, thermal printer
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Adafruit, you are killing me…
This morning the door bell rang (yes ok, i overslept a little bit) and i immediately knew – it’s the UPS guy! Because i was waiting for this parcel from adafruit so desperately and the email said they are planning … Continue reading
Spark Core switching a Mosfet
Once again the Mosfet – in the video below you can see a spark core (a very cool kickstarter project which is basically an arduino with built in Wifi connectivity) switching a Mosfet-Transistor that makes the attached LED blink. Of … Continue reading
Using a Mosfet instead of a Relay to switch higher current
My father used to work as an electrician for more than 40 years – perhaps he would cry if he could read what i am writing here. Anyway – in many of my projects i have to switch current that … Continue reading
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