Thingiverse

CO2 meter

di aleksandr_ru

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The DIY CO2 meter and grapher for home and office use.

Features:
- display current CO2 level, temperature and humidity
- display historical graph of CO2 level for last 30 minutes
- switch to large display of CO2 level
- alarm when CO2 exceeds limit of 1000 ppm
- self calibration with countdown display

Electronics inside:
- Arduino nano
- 0.96" OLED display
- MQ135 sensor
- DHT11 sensor
- 6x6x4.3mm button

[Arduino firmware and schematics at my github](https://github.com/Aleksandr-ru/co2meter)

Assembly instructions at my website [in Russian](https://aleksandr.ru/blog/domashniy_co2_metr) or [translated to English](https://aleksandr-ru.translate.goog/blog/domashniy_co2_metr?_x_tr_sl=ru&_x_tr_tl=en&_x_tr_hl=ru&_x_tr_pto=wapp).

arduino arduino case Arduino Nano CO2 DHT11 humidity MQ135 oled 096 OLED Display sensor temperature arduino arduino case Arduino Nano CO2 DHT11 humidity MQ135 oled 096 OLED Display sensor temperature

Fonte

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FDM / FFF

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