Category Archives: For Fun or Interest
First test, trying to use hand-cranked dc motor to charge USB devices
Background I tried one hand power cell phone emergency charger with disappointing results. The device is very small, and it comes with a promizing USB connector. But when trying to charge either a USB power bank or mobile phone, it … Continue reading
Posted in DIY, For Fun or Interest, Gadgets, Hobbies and Other Interests, Tests, Tips
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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
Posted in Android, Audio and Video, DIY, For Fun or Interest, Hobbies and Other Interests, Tests, Tips
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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
Posted in Audio and Video, DIY, For Fun or Interest, Hobbies and Other Interests, Security Standardization and Practises, Security Training, Awareness and Reports, Tests, Tools
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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
Posted in DIY, For Fun or Interest, Hobbies and Other Interests, Tests, Tools
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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
Posted in DIY, For Fun or Interest, Gadgets, Hobbies and Other Interests, Tests, Tips, Tools
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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
Posted in DIY, For Fun or Interest, Gadgets, Hobbies and Other Interests, Internet of Things and M2M, Raspberry Pi, Recommended Free Tools, Tests
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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
Posted in DIY, For Fun or Interest, Gadgets, Hobbies and Other Interests, Internet of Things and M2M, Raspberry Pi, Robotics, Tests
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