Geiger Counter: Difference between revisions

Revision as of 20:18, 9 August 2025

General

Based on this DiY-GCC2.0 kit (eBay Shop): a small Mega 328P based microcontroller (Arduino compatible) which drives a 16x2 TC1602A-01T LCD display and an RS232 output. See also useful information here for alternative kit/resources.

Hardware

Assembly Instructions
Schematics
Additional MAX232 serial interface

The board is similar to an Arduino Uno with a 10 MHz crystal. Optiboot bootloader for 10 MHz crystal with default serial parameters: 115200 8N1. Board definitions:

For Arduino IDE: this.
For Platformio: TBC

GM Tube

GM Tube Comparisons

Actual Tube used: CBT-11A

Voltage of start of counting: 260 - 320 V
Operating Current each section: 0.5 - 1.1 uA
Recommended Operating Voltage: 400 V
Own background: 0.6 c/s
Plateau Length/Inclination - 80 V/0.5 %/V

Test Sources

Am 241: 37 kBq mainly alpha source

Software (Stock)

Software (Custom)

Adding to Arduino Dev Environment

Notes

Power On: Hold down MODE button to do reset Mode Press: CLear alarm Mode Double Press: Toggle Backlight Mode Long Press: N/A

Tone Zero Press: Reset base level for tone Tone Zero Double Press: Speaker mute Tone Zero Long Press: N/A

@@ Line 9: / Line 9: @@
 * Additional MAX232 serial interface
-The board is similar to an Arduino Uno with a 10 MHz crystal. Optiboot bootloader for 10 MHz crystal with default serial parameters: 115200 8N1. Install new board definition from [https://raw.githubusercontent.com/impexeris/Arduino-Geiger-PCB/10MHZATMEGA328SMD/package_impexeris_AGP_index.json this].
+The board is similar to an Arduino Uno with a 10 MHz crystal. Optiboot bootloader for 10 MHz crystal with default serial parameters: 115200 8N1.
+Board definitions:
+* For Arduino IDE: [https://raw.githubusercontent.com/impexeris/Arduino-Geiger-PCB/10MHZATMEGA328SMD/package_impexeris_AGP_index.json this].
+* For Platformio: TBC
 === GM Tube ===