mirrors/esp32-geiger-counter
1
0
Fork 0
mirror of https://github.com/grillbaer/esp32-geiger-counter.git synced 2025-12-21 13:23:15 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge branch 'master' of https://github.com/grillbaer/esp32-geiger-counter.git

Browse Source
This commit is contained in:
Holger Fleischmann
2019-04-16 17:42:36 +02:00
parent 4d1a87865b d941f630d2
commit cf4e631f9b
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
README.md
View File

@@ -1,16 +1,18 @@
# IoT Geiger Counter with ESP32, OLED Display and Thingspeak Channel # IoT Geiger Counter with ESP32, OLED Display and Thingspeak Channel
- Measures radioactive gamma and beta radiation with already quite good resolution at the typical low levels of the background radiation (due to the big STS-6 tube)
- Displays the current counts per minute (CPM), estimated dose equivalent rate in micro-Sievert per hour (µS/h) and 10 minutes history with 5 second resolution as bargraph
![Circuit Board](media/geiger-counter-pcb.jpg)
- Low-power mode for use with batteries, OLED display and click sounds on, WiFi off - Low-power mode for use with batteries, OLED display and click sounds on, WiFi off
- WiFi mode for thingspeak data upload every minute, see https://thingspeak.com/channels/758223 - WiFi mode for thingspeak data upload every minute, see https://thingspeak.com/channels/758223
[![https://thingspeak.com/channels/758223](media/thingspeak.png)](https://thingspeak.com/channels/758223) [![https://thingspeak.com/channels/758223](media/thingspeak.png)](https://thingspeak.com/channels/758223)
![Circuit Board](media/geiger-counter-pcb.jpg)
Feel free to use this project as a base for your own projects AT YOUR OWN RISK! Feel free to use this project as a base for your own projects AT YOUR OWN RISK!
# Hardware # Hardware
- Russian Geiger counter tube STS-6 at 400 V with ~5 MΩ series resistor - Russian Geiger counter tube STS-6 at 400 V with ~5 MΩ series resistor
- High voltage circuit from ArnoR at mikrocontroller.net https://www.mikrocontroller.net/topic/380666, schematic https://www.mikrocontroller.net/attachment/273334/HystereseStepUpTLC555-2.png. *Keep the high-voltage capacitor small to avoid dangerous charges!* - High voltage circuit from ArnoR at mikrocontroller.net https://www.mikrocontroller.net/topic/380666, schematic https://www.mikrocontroller.net/attachment/273334/HystereseStepUpTLC555-2.png. *Keep the high-voltage capacitor small to avoid dangerous charges! For safety avoid any contact with the high voltage parts!*
- ~400 µs pulse generation using Geiger tube series resistors as voltage divider, high impedance input to darlington transistor and TLC 555 timer for rectangle pulse generation - ~400 µs pulse generation using Geiger tube series resistors as voltage divider, high impedance input to darlington transistor and TLC 555 timer for rectangle pulse generation
- ESP32 board Wemos Lolin32 - ESP32 board Wemos Lolin32
- OLED 128x64 with controller SH1106 at I2C - OLED 128x64 with controller SH1106 at I2C