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)
A digital counter using CD4026 for fast event counting as those from Geiger Muller tubes or scintillation probes.
Melting lead at 327.46 °C to recycle it as ingots.
MR-04 is a ionization tube.
A Longitudinal Excitation Nitrogen Laser design, using a fridge pump for vacuum and N2 from air as lasing medium.
A quick guide on how to configure an Android 4.0 Emulator image.
VA-Z320 mica window geiger muller tube
MCT-17 Mica Window Geiger Muller Tube
SBM-19 Geiger Muller Tube
Learn how to get over some limitations in Android Bluetooth SDK to read the Bluetooth COD (Major, minor classes) for a given Bluetooth device.
Avoid the NullPointerException error when using the getSharedPreferences on Android.
Learn how to make an autostartable service on Android OS, using the BOOT_COMPLETED notification.
How to build a socket for a big Russian hydrogen Thyratron tube using copper connectors made out of a pipe.
Using a hydrogen Thyratron tube to switch a Tesla Coil. The Thyratron tube replaces the noisy spark gap.
Some details on the relaxation oscillators and my implementation using a hydrogen thyratron.
A very customizable pulse generator built using three 555 timers, to control a relaxation oscillator hydrogen thyratron.
My DIY PFN for a relaxation oscillator using a hydrogen thyratron.
Some pictures with my marx generator throwing high voltage discharges!
A hydrogen thyratron is a device capable of switching big amounts of energy. The major advantage over other thyratrons is that the deionization time is reduced by using the hydrogen gas, generated in a small reservoir inside the tube, from a metallic Hydride.
Learn how to build a compact gas igniter or stun gun, powered by a 9V battery.
Protect your tent’s perimeter from bears, when in the wild. A 20KV pulse generator will inflict painful shocks to anyone touching the perimeter electric fence wire. Not lethal, but very painful, enough to put unwanted visitors on the run.
A small spark gap tesla coil, a good example for an relaxation oscillator.
How to rewind a MOT transformer for a high current low voltage power supply.
A simple way to extract the symbols in .so files.
How to fix the Unable to open sync connection, displayed in Eclipse Console by Android SDK tools.
A wireless power transmitter used to send electrical energy without wires. It uses induction, an emitter and a receiver working on the 63.1KHz frequency.
A simple electronic ballast running on 220V designed to work with up to four small power fluorescent lamps
A vacuum tube tesla coil built around the Russian tetrode GI-30. My first VTTC and my first vacuum tube circuit, and some very rewarding results.