Category Archives: DIY

Reusing motorcycle intercom headset with android phone

This is about reusing an old wire based motorcycle intercom headset with android mobile. With intercom app in android, and with bluetooth, it is possible to use it for intercom between android phones, or even use it for phone calls. … Continue reading

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Test: ONVIF IP Camera

ONVIF is recent standard for security IP cameras. Due to the standard, it should be easier to integrate these cameras into a surveillance solution. From ONVIF site: The ONVIF specification defines a common protocol for the exchange of information between … Continue reading

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DIY Woodwork: test of wooden workbench

I needed to build a proper (solid) workbench, and I ended up into these plans “Workbench plans free“. The result is shown in the 2 photos below. I’m really happy with the result. There were some implementation issues due to … Continue reading

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Challenge: How to estimate angles for objects in the sky

I’m novice when it comes to looking planets via telescope. Well, I actually would like to take decent photos but have realised that it is not as easy as it sounds… One of the basic skills when searching planets, or … Continue reading

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DIY Generic design for shelter (firewood, canopy)

The idea for this design is from the DIY pages at puuinfo (sorry, in finnish only, their english pages do not have these design ideas in english.) firewood shelter canopy In nordic countries the roof have to stand the possible … Continue reading

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Simple LED detector for RFID or NFC of 13MHz, without any battery

Triggered by experience with “Raspberry and RFID reader/writer, first test “, I tested a simple LED RF detector idea that can be found in “RFID detector” and “RFID Reader Detector and Tilt-Sensitive RFID Tag “. For 13Mhz RFID/NFC, the LED … Continue reading

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Raspberry and RFID reader/writer, first test

An RFID system is always made up of two components: the transponder, Proximity Integrated Circuit Card (PICC) the detector or reader , Proximity Coupling Device (PCD) The RFID reader/writer (13.56MHz) RF522 for arduino can be used in Raspberry. In this … Continue reading

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