Posted inBlackBerry Software
Developing for Blackberry -part 2-
An updated article on some very basic first steps with Blackberry programming. Tools, sample app, and how to get it running.
Posted inElectronics Hardware Nuclear
DIY/Homemade Geiger Muller Clicker V2
This geiger counter circuit features a regulated high voltage supply, with adjustable output. It can run on a single AA battery (1.5V)
Posted inElectronics Hardware
Digital Counter using CD4026
A digital counter using CD4026 for fast event counting as those from Geiger Muller tubes or scintillation probes.
Posted inHardware High Voltage Optics
Longitudinal Excitation Nitrogen Laser
A Longitudinal Excitation Nitrogen Laser design, using a fridge pump for vacuum and N2 from air as lasing medium.
Android 4.0 (Ice Cream Sandwich) Emulator How-to
A quick guide on how to configure an Android 4.0 Emulator image.
Tube: MCT-17 /SI-3B (си-3Б)
MCT-17 Mica Window Geiger Muller Tube
Android BluetoothClass Major Service Classes, Minor and Major Device Classes
Learn how to get over some limitations in Android Bluetooth SDK to read the Bluetooth COD (Major, minor classes) for a given Bluetooth device.
Android getSharedPreferences NullPointerException
Avoid the NullPointerException error when using the getSharedPreferences on Android.
Auto Start Android Service on Boot
Learn how to make an autostartable service on Android OS, using the BOOT_COMPLETED notification.
Posted inHardware
Building a socket for a power tube – TGI2 400/16
How to build a socket for a big Russian hydrogen Thyratron tube using copper connectors made out of a pipe.
Posted inHardware High Voltage
Thyratron Switched Tesla coil (THYTC)
Using a hydrogen Thyratron tube to switch a Tesla Coil. The Thyratron tube replaces the noisy spark gap.
Posted inHardware High Voltage
Relaxation oscillator using a Hydrogen Thyratron
Some details on the relaxation oscillators and my implementation using a hydrogen thyratron.
Posted inHardware High Voltage
Pulse generator (Variable duration, frequency and amplitude)
A very customizable pulse generator built using three 555 timers, to control a relaxation oscillator hydrogen thyratron.
Posted inHardware High Voltage
Pulse forming network
My DIY PFN for a relaxation oscillator using a hydrogen thyratron.
Posted inHardware High Voltage
Twin Marx Generator
Some pictures with my marx generator throwing high voltage discharges!
Posted inHardware High Voltage Tubes
Tube: TGI2 400/16 (ТГИ2-400/16), Russian hydrogen thyratron
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.
Posted inHardware High Voltage
Battery powered high voltage multiplier for gas igniter or stun gun
Learn how to build a compact gas igniter or stun gun, powered by a 9V battery.
Posted inHardware High Voltage
Electric Fence – 20KV pulses for perimeter defense
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.
Posted inElectronics Hardware High Voltage
How to build a Tesla Coil #4
A small spark gap tesla coil, a good example for an relaxation oscillator.
Posted inElectronics Hardware High Voltage
Rewind a Microwave Oven Transformer
How to rewind a MOT transformer for a high current low voltage power supply.
How to list symbols in a .so file
A simple way to extract the symbols in .so files.
Android “Unable to open sync connection” error
How to fix the Unable to open sync connection, displayed in Eclipse Console by Android SDK tools.
Posted inElectronics Hardware
Wireless Power Transmitter
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.
Posted inElectronics Hardware
Electronic Ballast for fluorescent lamps
A simple electronic ballast running on 220V designed to work with up to four small power fluorescent lamps
Posted inElectronics Hardware High Voltage
Vacuum tube tesla coil (VTTC) using Russian GI-30
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.
Posted inPhotography
Removing a stuck filter from a lens
An easy way to remove a stuck filter from a lens. All you need is a piece of flexible PVC insulated wire.