Showing how to create a cartoon effect using the image processing library Leptonica
Create a beautiful custom 3D carousel view, to give your Android user interfaces a modern look. Sample code included under GPL v2.
Learn how to create a simple tiled background for Android applications using Java code.
The Amperex 258-B is a half-wave Mercury-Vapor rectifier tube used in power supplies.
The Svetlana GP-5 (ГП-5) is a glass-envelope beam power triode intended for use as a shunt regulator or pulse modulator in high-voltage systems.
A digital counter with a nice LCD display that supports both incrementing and decrementing. Good for various purposes, in this case as a display to a coil winding machine.
A short insight on how to get started with developing for the new Blackberry 10, using dynamically created controls.
The CDV-717 is a very high-range gamma radiation ionization chamber detecting instrument, manufactured by Victoreen back in 1964.
The CDV-750-5b Dosimeter Charger is a self contained battery-operated instrument.
Fixing a CDV700 dosimeter can be difficult because original replacement components are not an easy find.
External Cavity tube, 1KW at 1075 to 1096MHz.
5J29 is a split anode magnetron. This device is water cooled, the water flowing round the metal loop.
Electrolysis of molten sodium hydroxide at 318 °C .
Learn how to scale an user interface to maintain the same aspect ratio, while running the same code on various Android devices.
A C++ Library for AVR microcontrollers that allows easy connectivity to the Nokia 3110/5110 graphical LCDs.
How to build an ultrasound beacon and the corresponding receiver.
You can use your smartphone (android/iphone) to control electrical equipment inside your home. See how.
Build a dual H-bridge board to control two motors.
Learn how to set your atmega to work with various external crystals, program the fusebits, and build a fusebit doctor to revive your AVRs, in case you wrote the wrong settings .
An open source library that allows you to use a NMEA GPS Module with an AVR Microcontroller. UART Communication and NMEA Parser is included.
Learn how to transform your HD44780 LCD into a easy to use, serial LCD, that you can connect to your microcontroller using only 3 wires! It’s time to save a few pins, and expand your project’s functionality!
A timelapse video of a Hyacinth opening into flower!
White and blue mold as seen under the microscope, magnified up to 1000 (one thousand) times!
Building an autonomous robot using a rover platform and advanced electronics is not an easy job. Kevin asked me to build a robot that would follow its user. A companion, very much like a robo-dog. See the project log here.
This page has been created to report unusual activity (radiation, temperature, humidity, luminosity, barometric pressure), as recorded by the uRADMonitor, including all the debug data to support the results. I cannot guarantee the measurement precision, I merely present the data recorded by the instruments.
A JNI Library for Android, to inject keys and touches but also listen for incoming input events to and from all applications, available as Open Source under GPL.
Some of these tubes contain small quantities of Cesium-137, Cobalt-60, Radium-226, Krypton-85. The radioactive elements have been added to increase the electronic response by improving the internal ionization processes.
A short review on my new Christmas gift, a neat digital soldering station, ZD 937, and a quick light installation that I did with LEDS, running directly on mains , 220V, using the ZD937.
A digital dosimeter design that can be used with multiple geiger tubes, constructed around the atmega8 microcontroller and a 2×16 LCD. Equipped with a radio Bluetooth module for remote operation.
The BMP085 is a compact, low power sensor for reading temperature, barometric pressure and altitude. See it in use with Atmel microprocessors.