Flipper/Applications/Official/source-OLDER/xMasterX/flipper_geiger/README.md

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# flipperzero-geigercounter
A geiger counter application for the Flipper Zero
![banner](https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/logo.jpg)
You need a **geiger counter** board to run this application. This board can be used : https://aliexpress.com/item/1005004074447209.html
The geiger counter board can be powered with +5V power pin of the **Flipper Zero**
Output pin for measure on arduino cannot be used on the **Flipper Zero** because output voltage is too low. You can use jack out port instead. This port must be connected on **A7** GPIO :
<p align="center"><img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/schematic.jpg" width=75% height=75%></p>
## Build the program
Assuming the toolchain is already installed, copy **flipper_geiger** directory to **applications_user**
Plug your **Flipper Zero** and build the geiger counter :
```
./fbt launch_app APPSRC=applications_user/flipper_geiger
```
The program will automatically be launched after compilation
<img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/flipper1.png" width=25% height=25%>
**A4** GPIO can be connected on **A7** GPIO to test this application without using a geiger tube. **A4** GPIO is generating a signal whose frequency changes every second.
Press Ok button to clear the graph, press back button to quit
If you don't want to build this application, just simply copy **flipper_geiger.fap** on your **Flipper Zero**
## Use cases
Ambient radioactivity :
<img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/flipper2.png" width=25% height=25%>
Measure of uranium ore piece inside a lead container :
<img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/flipper3.png" width=25% height=25%>
Measure of uranium ore piece in contact with the geiger tube :
<img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/flipper4.png" width=25% height=25%>
All previous measures in a row (the scale of the graph is automatically adjusted) :
<img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/flipper5.png" width=25% height=25%>
**A4** GPIO on **A7** GPIO :
<img src="https://github.com/nmrr/flipperzero-geigercounter/blob/main/img/flipper6.png" width=25% height=25%>
## Changelog
* 2023-01-15
* Code fix & a lot of optimizations. Now a lot of events can be handled without any issue
* 2023-01-09
* Schematic was added & code fix
* 2023-01-08
* Initial release