iotdevicesdev - Hackdot

J305 SBM20 LND712 Tubes Part2: Geometry Physics, Dead Time Calculation and Myths

Posted by iotdevicesdev on Tuesday August 18, 2026 @12:15PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/comparison-of-geiger-muller-tubes-sbm20-j305-and-lnd712-part2/

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Official Fritzing part for the GGreg20_V3 Geiger counter module

Posted by iotdevicesdev on Thursday August 13, 2026 @04:06AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20_v3-fritzing-part/

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Dimensions of the Geiger-Muller Tube Holder on the GGreg20_V3 Geiger Counter PCB

Posted by iotdevicesdev on Monday May 25, 2026 @12:28PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20-v3-j305-tube-mounting-dimensions/

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Cross-Controller External Component GGreg20_V3 Released for ESPHome

Posted by iotdevicesdev on Monday March 09, 2026 @08:29AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20_v3-external-component-for-esphome/

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IoT-devices and IoT Case Lab team up to design and print cases for electronics

Posted by iotdevicesdev on Monday December 08, 2025 @04:22PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/iot-devices-and-iot-case-lab-team-up/

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The Sound GGreg20_V3 App for Android on Google Play

Posted by iotdevicesdev on Monday December 08, 2025 @04:17PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/meet-the-sound-ggreg20_v3-app-for-android-on-google-play/

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The Sound GGreg20_V3 App for Android on Google Play

Posted by iotdevicesdev on Friday October 03, 2025 @10:44AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/meet-the-sound-ggreg20_v3-app-for-android-on-google-play/

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Building a BLE-Enabled GGreg20_V3 GeigerCounter – Part1:ESP32 ESPHome BLE Server

Posted by iotdevicesdev on Friday July 25, 2025 @06:34AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20-v3-ble-enabled-geiger-counter-esp32-esphome-part1/

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The most frequently ordered GGreg20_V3 options 2024

Posted by iotdevicesdev on Sunday June 15, 2025 @08:58AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/most-frequently-ordered-ggreg20_v3-options-2024/

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The new black GGreg20_V3:HV-setup upgrade, quality control, warranty stickers

Posted by iotdevicesdev on Sunday June 15, 2025 @08:58AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/new-black-ggreg20_v3-board-hv-adjustment-upgrade-and-stickers/

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Testing of energy consumption by Geiger counter GGreg20_V3

Posted by iotdevicesdev on Thursday February 27, 2025 @07:30AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20_v3-geiger-counter-energy-consumption-testing/

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Application note on the high-voltage converter DCDC_3V3_400V_V1

Posted by iotdevicesdev on Thursday January 09, 2025 @05:44AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/high-voltage-converter-dcdc-3v3-400v-v1-application-note/

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ESPHome firmware ESP32 and GGreg20_V3 – issue solution with the pulse counter

Posted by iotdevicesdev on Saturday January 04, 2025 @07:18AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/esphome-esp32-ggreg20_v3-firmware-pulse-counter-issue-solution/

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Technical note on initial diagnostics of the GGreg20_V3 module with J305 tube

Posted by iotdevicesdev on Thursday November 14, 2024 @02:30PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/technical-note-on-initial-diagnostics-of-ggreg20-v3/

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Differences between the coefficient for source radiation power and absorbed dose

Posted by iotdevicesdev on Monday April 29, 2024 @03:09AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/geiger-tube-j305-conversion-factor-difference-for-radiation-source-power-and-absorbed-dose-technical-note-en/

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How to calculate the conversion factor CPM to uSv/h for J305 tube Geiger counter

Posted by iotdevicesdev on Tuesday March 26, 2024 @12:26PM
from the hackaday.io dept.

https://hackaday.io/project/183103-ggreg20v3-ionizing-radiation-detector/log/228524-technical-note-how-to-calculate-the-conversion-factor-of-cpm-to-svh-for-diy-geiger-counter-project-with-j305-gm-tube

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LM75 thermometer: connection to ESP12.OLED_V1 in ESPHome

Posted by iotdevicesdev on Tuesday March 26, 2024 @12:22PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/lm75-thermometer-connection-to-esp12-oled_v1-in-esphome-en/

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Changes in ESPHome configuration validation – Pin Reuse validation

Posted by iotdevicesdev on Friday January 05, 2024 @12:47PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/about-changes-in-esphome-configuration-validation-pin-reuse-validation-en/

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Geek Gift GGreg20_ES Epoxy Souvenir Price Reduced

Posted by iotdevicesdev on Friday December 22, 2023 @03:27AM
from the hackaday.io dept.

https://hackaday.io/project/193237-ggreg20es-souvenir-geiger-counter/log/226177-geek-gift-ggreg20es-epoxy-souvenir-price-reduced

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SBM20 GM-tubes are still available on our Etsy

Posted by iotdevicesdev on Sunday November 19, 2023 @04:33AM
from the hackaday.io dept.

https://hackaday.io/project/183103-ggreg20v3-ionizing-radiation-detector/log/225309-sbm20-gm-tubes-are-still-available-on-etsy-to-order-with-ggreg20v3

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I2CUI4_V1 – I2C keypad is on website and Tindie

Posted by iotdevicesdev on Saturday November 18, 2023 @06:21AM
from the hackaday.io dept.

https://hackaday.io/project/189314-i2cui4v1-user-interface-i2c-keypad-with-5-keys/log/225283-i2cui4v1-i2c-keypad-is-on-website-and-tindie

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Epoxy Souvenir Geiger counter is already on Etsy

Posted by iotdevicesdev on Thursday November 16, 2023 @04:42PM
from the hackaday.io dept.

https://hackaday.io/project/193237-ggreg20es-souvenir-geiger-counter/log/225261-epoxy-souvenir-geiger-counter-is-already-on-etsy

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Geiger counter GGreg20_V3 module is already on Etsy

Posted by iotdevicesdev on Monday November 06, 2023 @05:02PM
from the hackaday.io dept.

https://hackaday.io/project/183103-ggreg20v3-ionizing-radiation-detector/log/224992-geiger-counter-ggreg20v3-module-is-also-on-etsy-store

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GGreg20_ES – Souvenir Geiger Counter

Posted by iotdevicesdev on Tuesday October 31, 2023 @02:20PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20-geiger-counter-epoxy-souvenir/

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GGreg20_V3 and ESP12.OLED_V1 in the project of KPI specialists

Posted by iotdevicesdev on Sunday August 20, 2023 @10:21AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/ggreg20_v3-esp12-oled_v1-kpi-project/

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Geiger Counter Emulator of GGreg20_V3 Module by Means of ESP8266 (Part 1 of 3)

Posted by iotdevicesdev on Friday July 21, 2023 @11:36AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/geiger-counter-emulator-ggreg20_v3-module-by-means-of-esp8266-part1/

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Technical note. Geiger counter at low temperatures – the work of a DIY module

Posted by iotdevicesdev on Tuesday July 18, 2023 @07:01PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/technical_note_performance_of_diy_geiger_counter_ggreg20_v3_at_low_-temperatures/

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Geiger counter emulator module by means of ESP8266 Part3: Testing and Conclusion

Posted by iotdevicesdev on Wednesday May 17, 2023 @01:20PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/geiger-counter-emulator-ggreg20_v3-module-by-means-of-esp8266-part3/

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Geiger counter emulator module by means of ESP8266 Part 2 Building the Emulator

Posted by iotdevicesdev on Saturday April 08, 2023 @02:54PM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/geiger-counter-emulator-ggreg20_v3-module-by-means-of-esp8266-part2/

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Geiger counter emulator of GGreg20_V3 module by means of ESP8266

Posted by iotdevicesdev on Wednesday March 29, 2023 @03:05AM
from the iot-devices.com.ua dept.

https://iot-devices.com.ua/en/geiger-counter-emulator-ggreg20_v3-module-by-means-of-esp8266-part1/

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