Geiger Counter: Difference between revisions
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* Additional MAX232 serial interface | * 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. | 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: | |||
** See under $HOME/.platformio/platforms/atmelavr/boards or <Project>/boards | |||
** geiger.json | |||
** optiboot_atmega328_10MHz.hex | |||
** Ref: [https://docs.platformio.org/en/latest/platforms/creating_board.html Custom Embedded Boards]. | |||
=== GM Tube === | === GM Tube === | ||
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* [https://github.com/impexeris/Arduino-Geiger-PCB/wiki Adding to Arduino Dev Environment] | * [https://github.com/impexeris/Arduino-Geiger-PCB/wiki Adding to Arduino Dev Environment] | ||
Libraries used: | |||
* OneButton | |||
=== Notes === | === Notes === | ||
Latest revision as of 16:46, 12 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:
- See under $HOME/.platformio/platforms/atmelavr/boards or <Project>/boards
- geiger.json
- optiboot_atmega328_10MHz.hex
- Ref: Custom Embedded Boards.
GM Tube
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)
Libraries used:
- OneButton
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