Radiation Monitoring Feed back online

RH Electronics monitoring feed back online!
https://xively.com/feeds/122314/

It was down since COSM service became Xively.com, they changed API and published new Arduino libraries. My simple Arduino code for sending CPM values from Geiger Kit via Arduino is here:

https://github.com/RH-Electronics/Xively

RH Electronics GitHub

RH Electronics GitHub is here:
https://github.com/RH-Electronics
The projects with open source can be found there!

XR2206 DIY Kit in stock again

http://radiohobbystore.com/function-generator-xr2206-diy-kit-20hz-100khz.html

XR2206 DIY Kit back to stock again. Now only for 20.00$!

Geiger Counter DIY Kit with Nokia 5110 LCD Release

New Geiger Kit module is available for sale now:
http://radiohobbystore.com/diy-geiger-counter-kit-with-nokia-5110-lcd-pic16f876a.html

Updates about Geiger Counter with Nokia LCD

The PCB's are here. While other parts are still in the way I have soldered several samples. This kit will be available as a pre-soldered assembled device. May be as as pcb+components too, I still not decided.

And some photos attached, click to enlarge:

Adafruit Distribution in Israel

Today RH Electronics became official distributor of Adafruit Industries in Israel. You can find the new products with quote "Adafruit" in search results.

Demonstration of Geiger Tube emulation with DDS generator and DIY Geiger Counter with NOKIA 5110 LCD

Here is the video where I connected DDS generator for Geiger-Muller tube emulation. It starts from 1Hz (60 cpm) and goes up to 4000Hz (240000 cpm) The accuracy is better for low background cpm. Maximum cpm error is 4% on the highest values.  Counting ability for this prototype is 500000 cpm. In real life condition with SBM20 tube we'll be able to register about 1mSv/h (or 175000 cpm) because of tube limitation (the tube has physical limitation for cpm counting).