Düzenleniyor IoT-devices Ggreg20 v3

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The GGreg20_V3 Ionizing Radiation Detector module with pulse output. As the GM tube SBM20 is used. Produced since 2020 by Ukrainian IoT and DIY electronics company IoT-devices LLC based in Kyiv.

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=== ***Purpose*** ===

[link|https://iot-devices.com.ua/en/product/ggreg20_v3-ionizing-radiation-detector-with-geiger-tube-sbm-20/|GGreg20_V3] Ionizing Radiation Detector is an electronic sensor module for building a personal counter of ionizing radiation level. For this purpose, the detector has an impulse counting output to the main controller. Arduino, Raspberry Pi, ESP8266, ESP32, STM32 and others can be used as a host controller.

The radiation level is indicated by light and sound signals. The user can mute sounds (jumper J1 - buzzer on/off).

=== ***Detailed Description*** ===

GGreg20_V3 is an inexpensive and useful device for checking the “purity” of:

* mushrooms,
* berries,
* vegetables,
* firewood, etc.

This module is useful for creating smart measurement devices for determining the power of ionizing radiation indoors or outdoors, and is available in both portable/pocket style and stationary mode. The only thing you need to start measuring ionizing radiation with the GGreg20 is any microcontroller that can count the number of pulses per unit time on GPIO.

***Specifications***

# Module dimensions - 30 x 126 x 12 mm. Weight 30 g.
# Power supply:
** a rechargeable battery or a battery: 1 cell Li (3.7V) battery, 2 cell Ni (2.4V) battery, 3 cells (4.5V) battery connecting to port "Bat";
** a 5 Volt charger.
# Power supply of the SBM-20 tube is a built-in adjustable high voltage DC-DC converter. The target voltage level of 400 V is regulated by a potentiometer. The module is fine-tuned and ready for use.
# Consumption current - 18 mA at 5V or 30 mA at 3.7V via LiIon.
# GGreg20_v3 is compatible with the ESP8266/ESP32 logic signal levels (3V3 ACTIVE-LOW: 3 to 3.3V HIGH and about 0.7V LOW), and will work even with the 5V logic input.

***Dimensions and Pin assignments***

GGreg20_V3 module pin assignments are as follows:

* BAT - Power supply input 2.2V - 5.5 V;
* ON/OFF - Main switch on/off;
* OUT - Pulse output, active-low;
* BUZ - Buzzer enable jumper.

The dimensions of the GGreg20_V3 module are as follows:

* X: 126 mm;
* Y: 30 mm;
* Z: 12 mm.

[image|2721780|align=center]

***Differences and compatibility with previous versions of GGreg20***

[image|2721797|align=center]

***Note 1*** The GGreg20_V2 module version has not been included in the comparison because it was developed for other design solutions (and did not provide space for the SBM-20 tube on the module board).

***Note 2*** The module board has a default protection diode against erroneous pole reversal when connecting the battery. Such protection will be appropriate despite the fact that it slightly narrows the voltage range of the input power supply which will be 3-5.5 volts.

***Note 3*** To power the GGreg20_V3 from a 2.4 volt source, you need to short the Schottky diode shown in the photo with a wire or replace it with a 0 ohm resistor. Note, however, that such a correction will disable the module's reverse polarity protection.

[image|2721784|align=center]

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GGreg20 V3 Datasheet ENG

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