/products/devtools/avnetboardscommunity/b/blog/posts/pp-22-gamma-radiation-measurement-with-minized1. IntroductionI have a really nice sensor module called GDK101 which allow to measure a gamma radiation in range up to 200 usV/h. This sensor have really simple communication interfaces: I2C or UART. There is also analog output which could be used fen-USTelligent Community 12https://community.element14.com/products/devtools/avnetboardscommunity/b/blog/posts/pp-22-gamma-radiation-measurement-with-minizedWed, 13 Feb 2019 19:27:52 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:717f42dd-b82b-4054-8f10-96e355198c25kk990<p>Here are data collected from sensor:<br /><a class="jive-link-external-small" href="https://thingspeak.com/channels/702515" rel="nofollow ugc noopener" target="_blank" title="https://thingspeak.com/channels/702515">https://thingspeak.com/channels/702515</a> </p><img src="https://community.element14.com/aggbug?PostID=6452&AppID=181&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/products/devtools/avnetboardscommunity/b/blog/posts/pp-22-gamma-radiation-measurement-with-minizedSun, 03 Feb 2019 21:19:07 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:717f42dd-b82b-4054-8f10-96e355198c25jw07521<p>Years ago they made watch faces that used radium with a phosphor to produce a glow in the dark watch. If you can find one of these watch faces it makes a good testing source for alpha and gamma radiation. I have an old one that no longer glows in the dark due to its age but it still gives off more than enough radiation to test Geiger tubes and other sensors. </p><p>&nbsp;</p><p>John</p><img src="https://community.element14.com/aggbug?PostID=6452&AppID=181&AppType=Weblog&ContentType=0" width="1" height="1">