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Technical note: The Geiger counter GGreg20_V3 power supply voltage range
The GGreg20_V3 module can operate in two modes:(1) with protection against reverse polarity;(2) with an extended range of power supply...
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New GitHub repository for connecting virtual GGreg20_V3 to Home Assistant server
We have already published an article on how to connect your own GGreg20_V3 to the ThingSpeak service. But this time, we have posted a repository on GitHub for those Home Assistant users who do not have...
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Technical note on bug fixes in ESPHome fw for ESP32 GPIO & interrupt handler...
To the attention of those users of the Geiger counter module GGreg20_V3 connected to the ESP32 microcontroller with ESPHome firmware who created their firmware earlier and have not yet had time to...
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Radioactive particle detector GGreg20_V3: a new option for selecting the...
We are pleased to inform you about a new option that has been added to our module – the GGreg20_V3 radioactive particle detector. Now you can choose the J305 Geiger-Muller tube.The J305 tube is one of...
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Geiger counter emulator with pulse output GCemu20_V1
Kyiv, Ukraine – IoT-devices, LLC, a leading provider of innovative IoT solutions, is thrilled to announce the launch of its latest product, the GCemu20_V1 Geiger Counter Emulator with Pulse Output....
View ArticleGeiger counter emulator of GGreg20_V3 module by means of ESP8266
Welcome to our guide on building a hardware-software Geiger counter emulator of GGreg20_V3 module based on ESP8266 This emulator can be useful for testing and tuning Geiger counters or for educational...
View ArticleGeiger counter emulator of GGreg20_V3 module by means of ESP8266 Part 2...
Geiger counter emulator: what we needTo build the Geiger counter module emulator, we’ll need the following parts and materials...Read 2nd part of the...
View ArticleGeiger-Muller tubes: Comparison of SBM20, J305 and LND712
We understand very well the difficulties of choosing for radio amateurs who have to choose between different options, including tubes, when ordering a product.When we developed GGreg20 in 2020, we did...
View ArticleGeiger counter emulator of GGreg20_V3 module by means of ESP8266 Part 3:...
In this, the final part of the series, we describe how we tested the hardware and software module of the Geiger counter emulator we developed. In this part, we also draw conclusions and point out the...
View ArticleTechnical note. Geiger counter at low temperatures – the work of a DIY module
We wondered what would happen if we took our DIY Geiger counter module GGreg20_V3 and put it in a freezer with a target temperature of -23 Celsius together with the ESP32 controller.Will our sensor...
View ArticleUV test of Geiger tubes J305
There are videos on the Internet showing that J305 tubes are very sensitive to UV rays. They literally go crazy under the influence of this type of radiation. We conducted our own quick UV test of...
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Technical note: How to calculate the conversion factor for Geiger tube SBM20
The main goal of this publication is to correctly calculate and, if possible, understand where the conversion factors such as 8.77 and 0.0057 for the SBM20 tube, which are all published on the...
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Our modules Radioactive particle detector GGreg20 on the GMCmap service map
Great news! Several more customers have connected to the gmcmap.com radiation detectors based on our GGreg20 radioactive particle detector module. See the full story...
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GGreg20_V3 with Raspberry Pi Pico W under Home Assistant with ESPHome...
We’ve been planning to post a GGreg20_V3 configuration example for the Raspberry Pi Pico W since ESPHome started supporting this wonderful controller with wireless support. But after users started...
View ArticleGGreg20_V3 and ESP12.OLED_V1 in the project of KPI specialists
The article analyzes open data on radiation air pollution in the city Kyiv and visualized the data using analytical tools of the Python programming...
View Articleissue: LED stays on forever
Hello guys. The kit seems to stop working after months of working fine.First there was no flash at all for days. I tried to clean the tube contacts. After letting it cool down it seems to work fine for...
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GGreg20_ES – souvenir Geiger counter
https://preview.redd.it/vmhvg5yxxhxb1.jpg?width=1280&format=pjpg&auto=webp&s=5b6fcf12bd3d17211364235bb0a61db8acf62003As participants in the DIY IoT market, we see that the same faulty or...
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The IoT-devices, LLC store is already on Etsy
November 06, 2023, Kyiv, Ukraine.Dear users, customers and partners!We are pleased to announce that with the launch of Etsy Payments service in Ukraine, we immediately opened our own official store...
View ArticleTwo products - Geiger counters - are ready for orders on Etsy
You can already find two of our products in our official Etsy shop. We were the first to put up our charity souvenir Geiger counter GGreg20_ES and our flagship Geiger counter GGreg20_V3.If you decide...
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Epoxy Souvenir Geiger counter is already on our Etsy and Tindie store
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