Some pictures with my marx generator throwing high voltage discharges! http://www.pocketmagic.net/2011/10/twin-marx-generator/
Using a hydrogen Thyratron tube to switch a Tesla Coil. The Thyratron tube replaces the noisy spark gap. More: http://www.pocketmagic.net/2011/10/thyratron-switched-tesla-coil-thytc/
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: http://www.pocketmagic.net/2012/12/diyhomemade-portable-radiation-dosimeter/
Building an autonomous robot using a rover platform and advanced electronics is not an easy job. Here is a robot that follows its user. A companion, very much like a robo-dog: http://www.pocketmagic.net/2013/02/android-controlled-robot-part-2/
uRADMonitor is a global array of automatic, network connected monitoring stations, focused on continuous Environmental Gamma Radiation Surveillance.
A DIY microspot soldering/welding/cutting device using energy stored in a very large capacitor delivered as precisely calculated pulses to working electrodes.
More on: http://www.pocketmagic.net/2012/07/capacitor-discharge-microspot-welder-cutt