I’ve developed the uRADMonitor as an Environmental Radiation Surveillance automated monitoring device. Data is gathered in real time, 24/7, and is exported via the Internet to a database online. The data is available in customizable charts for analysis.
A story of making a DIY Digital Geiger counter circuit, that can be used with several tubes. Add an enc28j60 Ethernet module and use the data to create graphs available online!
Use the Atmega8 with two temperature sensors: the DS18B20 and the DHT-11. The latter also offers relative humidity data.
Read a post on my new acquisition, a Bauch&Lomb compound binocular microscope, a high quality tool, put to some good use to capture a few micro photographs. It can get up to 1000X with its current optics.
Learn how to create a network interface for your microcontroller projects. Here I have shown an example using the Atmega8 and the enc28j60 . Build a simple Webserver to show sensor data such as temperature or humidity.
Find the default orientation on Android devices, and intercept orientation changes even for activities locked in portrait or landscape mode.
Learn how to use the BluetoothManager private APIs on iOS / iPhone/ iPod to discover nearby connections, populate a list view with the results, and try to establish a Bluetooth connection to the remote devices.
A DIY microspot soldering/welding/cutting device using energy stored in a very large capacitor delivered as precisely calculated pulses to working electrodes.
A short review on a Mac Mini that I recently acquired. I plan to use it as my new fixed workstation instead of my older P4 PC.
For my first oscilloscope, I opted for the Atten ADS1102CAL. A few months after, I could say I’m extremely happy choosing this robust device, that does an excellent job on my workbench.
The laser keyboards use laser and infra-red technology to create the virtual keyboard and to project the hologram of a keyboard on a flat surface.
Several simple SMPS designs, constructed by Daniel, @danyk.wz.cz . A great resource to learn about various SMPS topologies.
A quick CCD replacement for my Canon S2 IS camera. CCD IR filter removed to enable IR photography options.
The device consists of a hot cathode (filaments), anodes (phosphor) and grids encased in a glass envelope under a high vacuum condition. The cathode is made up of fine tungsten wires, coated by alkaline earth metal oxides, which emit electrons when heated by an electric current.
A tutorial with code that presents an easy way to show a splash screen in your Blackberry application. Show the first Splash-Screen, wait a few miliseconds, than load the rest of your application.
An updated article on some very basic first steps with Blackberry programming. Tools, sample app, and how to get it running.
This geiger counter circuit features a regulated high voltage supply, with adjustable output. It can run on a single AA battery (1.5V)