Update README.md

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Holger Fleischmann
2019-04-14 17:48:57 +02:00
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# Geiger counter based on ESP32 with OLED display and thingspeak channel
- Low power mode for battery power supply without WiFi, only with OLED display and click sounds
- WiFi mode for thingspeak data upload
- Low power mode for battery power supply with OLED display and click sounds, WiFi off
- WiFi mode for thingspeak data upload every minute using WiFi
![Thingspeak View](media/thingspeak.png)
![Circuit Board](media/geiger-counter-pcb.jpg)
# Hardware
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- OLED 128x64 with controller SH1106 at I2C
- Voltage supply from USB or power supply or 3x1.5V AAA batteries, works from 3.0 V up to 5.0 V
![Circuit Board](media/geiger-counter-pcb.jpg)
# Software
- Eclipse sloeber project using Arduino library, ESP-IDF for sleep functions and u8g2 for display output