555 Timer revisited
An article on the well known 555 timer and a few rather unknown applications.
DIY Geiger Dosimeter with external tubes SBM-20 and SI-29BG
An open source digital portable radiation dosimeter, with external connector for attaching various geiger tubes.
Tube: SI-29BG (CИ-29БГ) Sensitive Small Geiger Muller
The SI-29BG comes with a good size / sensitivity ratio. These tubes are suitable for detecting beta and gamma radiation.
CCD Radiation detectors
Mobile devices with embedded cameras can be used to detect x-rays.
The MQ-9B Combustible gas sensor
A quick test with the combustible gas sensor, MQ-9B and an atmega8 microcontroller.
Using a Rain sensor with AVR Microcontrollers
A simple rain sensor connected to an ATMega8, provides readings on the level of water detected on its surface.
Tube: SI-12B (CИ-12Б) Mini Pancake Geiger Muller
The SI12B is a mica window compact Geiger tube, designed for measurement of alpha and soft beta-radiation.
Tube: SBM-20 (СБМ-20) Geiger tube
Medium size sensitive Geiger tube for hard beta and gamma radiation.
UT50 NaI Scintillation probe
I met some great people today, and I also got a wonderful device for my ongoing experiments as a gift: The UT50 Scintillation probe, manufactured by SC ICPM SA Romania.…
AVR SDCard FAT support with FatFS
You've probably seen or done lots of cool microcontroller projects already, but did you ever consider adding permanent data storage to your projects? I did, and there are numerous advantages:…
Using FS1000A/XY-FST RF Radio module with AVRs
Wireless data transfer can be useful for a variety of projects. I stumbled upon a very low cost emitter+receiver modules pair, and planned to use it for some time now.…
Global radiation monitoring network
EDIT: there is a dedicated blog on this project, here. Make sure to follow it for latest news. A few days ago I announced my intention of creating my first…
First Kickstarter project is closing in!
Preparing for my first Kickstarter project . Let's make it happen!
Tube: VA-Z431 Geiger tube
VA-Z431 test tube shaped geiger muller tube for liquids.
Tube: 258-B Amperex rectifier
The Amperex 258-B is a half-wave Mercury-Vapor rectifier tube used in power supplies.
Tube: GP-5 (ГП-5)
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.
Coil Winding machine counter with Atmega8 and Reed relay
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.
Victoreen CDV-717 Remote Gamma Survey dosimeter
The CDV-717 is a very high-range gamma radiation ionization chamber detecting instrument, manufactured by Victoreen back in 1964.
CDV-742 Dosimeter and CDV-750 Dosimeter Charger
The CDV-750-5b Dosimeter Charger is a self contained battery-operated instrument.
Repairing a Victoreen CDV-700 6B Dosimeter
Fixing a CDV700 dosimeter can be difficult because original replacement components are not an easy find.
Tube: 1B40
External Cavity tube, 1KW at 1075 to 1096MHz.
Tube: USN-5J29
5J29 is a split anode magnetron. This device is water cooled, the water flowing round the metal loop.
How to make metallic sodium
Electrolysis of molten sodium hydroxide at 318 °C .
Atmega8 and Nokia 5110 LCD
A C++ Library for AVR microcontrollers that allows easy connectivity to the Nokia 3110/5110 graphical LCDs.
Detecting an ultrasonic beacon
How to build an ultrasound beacon and the corresponding receiver.
Virtual Reality App Controls Real household objects
You can use your smartphone (android/iphone) to control electrical equipment inside your home. See how.
Dual H-Bridge for controlling two motors
Build a dual H-bridge board to control two motors.
How to set the AVR Fusebits
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 .
NMEA GPS Library for AVR Microcontrollers
An open source library that allows you to use a NMEA GPS Module with an AVR Microcontroller. UART Communication and NMEA Parser is included.
ATMega128 and HD44780 LCD using 3 Wires with the 74HC164
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!