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How to use KE-25 Oxygen Sensor with arduino -

24/08/2020· KE-25 oxygen sensor. This sensor is self generated voltage, so it doesn’t need any voltage source to operate. But it has so small voltage output. So to make easier to read with an arduino. We should amplify the sensor first. I use an LM358 op amp IC to amplify the sensor output. I amplify the sensor 11 times.

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GitHub - Arnold-n/Covid-CO2: DIY CO2 sensor

05/01/2021· covid-CO2 CO2 sensor. This project explains how to build a small, light and affordable DIY CO2 sensor useful to measure CO2 levels in indoor locations. CO2 can be used as a proxy to estimate the COVID-19 infection risk by aerosols, and thus to control ventilation (opening windows depending on CO2 levels, balancing cold and risk).

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CO2 Monitor - Arduino Project Hub

CO2 = 410*ppm*(Rs/f_RH_T / Rs410/f_RH_T_410)^b. Where the exponent b is equal to - according to Mad Frog. And where Rs410 is the sensor resistance measured in clean air (410 ppm of CO2) and f_RH_T_410 is the correction factor at the moment that the clean air sensor resistance is measured. Here we assume that the correction factor as a ...

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Smart Breathing Detection Integrated ... - Arduino Project Hub

The technology in this project is to help detect the infection of respiratory disease through analytics VOCs and CO2 concentration from exhaled breathing and measuring blood oxygen level. MAX30100 Pulse Oximetry Sensor. A network sensor system consisting of Arduino MKR1010, MAX30100 pulse oximetry sensor, and CSS811 air quality sensors is used to measure carbon dioxide and total volatile ...

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Homebrew Bubble Catcher Part 1 of 3 : 6 Steps - Instructables

Here we are homebrewing and using an arduino with an cheap optocoupler sensor to detect bubbles in a bubbler type airlock. Why are we doing this? Well .. firstly it's fun. Secondly, if you are a homebrewer, this will give you a handle on CO2 emission levels of your brew thorough fermentation time. Important safety warning - Please do not stop fermenting when bubbles stop. Stuff tends to happen ...

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Simple if else with a sensor and a buzzer - Arduino Forum

05/05/2021· Simple if else with a sensor and a buzzer. arduihome21 April 6, 2017, 2:31pm #1. Hello there, beginner programmer here. Expected result with the code: The buzzer go through the sound pattern only when the condition > 250 on A0 is met. Otherwise, no sound. Unwanted result: The current code will produce the sound pattern when the condition is met ...

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EZO-CO2™ Embedded Carbon Dioxide Sensor | Atlas Scientific

With all the talk of Co2 these days, you would think it’s easy to detect. But Co2 only consists of % of the atmosphere meaning; it’s a trace gas that’s quite difficult to detect. The Atlas Scientific EZO-CO2 sensor is a compact Non-Dispersive Infrared (NDIR) sensor that gets right to the point, giving you the Co2 readings in ppm. With ...

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