Carbon monoxide sensor in Home Assistant - everyone does it wrong! скачать в хорошем качестве

Carbon monoxide sensor in Home Assistant - everyone does it wrong!

PCB Prototyping for your projects - https://www.pcbway.com/setinvite.aspx... In this video, I'm making a carbon monoxide monitor for my home using an MQ7 carbon monoxide sensor, a DHT11 temperature and humidity sensor, and a NodeMCU microcontroller board. This sensor is beneficial for places where there is a fire source such as a stove or boiler, to monitor carbon monoxide build-up and adjust ventilation accordingly. There are plenty of tutorials on using the MQ7 sensor, but none are actually measuring as per what the datasheet requires. It states that the sensor should be heating up and cooled off in cycles, and only measured at the end of each cycle. To achieve that, the MQ7 module needs to be modified so instead of having a digital output pin, we can use that pin to control the applied voltage on the heater inside the sensor. This is not a simple modification so only attempt it if you are comfortable working with SMD components. In the end, one of my sensors failed for unknown reasons so approach this project at your own risk. If you like what I do, feel free to support the channel! https://www.tastethecode.com/support Tools and materials used in the video: MQ7 Carbon Monoxide Sensor Module - https://s.click.aliexpress.com/e/_Dmq... DHT11 Temperature/Humidity Sensor - https://s.click.aliexpress.com/e/_DEv... NodeMCU Development Board - https://s.click.aliexpress.com/e/_mOv... ESP32 board - https://s.click.aliexpress.com/e/_oCw... Soldering Rework Station - https://s.click.aliexpress.com/e/_onZ... Desoldering wire - https://s.click.aliexpress.com/e/_EQ7... Wire snippers - https://s.click.aliexpress.com/e/_Dd9... Wire strippers - https://s.click.aliexpress.com/e/_DmQ... Tweezers - https://s.click.aliexpress.com/e/_Ddk... Project box - https://s.click.aliexpress.com/e/_Dkw... RD6012 Bench power supply - https://s.click.aliexpress.com/e/_DBQ... The ESPHome Devices guide on the modification can be found below: https://devices.esphome.io/devices/MQ-7 My recording gear: Canon M50 Mark ii - https://s.click.aliexpress.com/e/_ALp9Sp Dragon Touch 4K Action Camera - https://s.click.aliexpress.com/e/_mrc... USB Condenser Microphone - https://s.click.aliexpress.com/e/_DF5... Tripod - https://s.click.aliexpress.com/e/_Del... Phone tripod mount - https://s.click.aliexpress.com/e/_s9WaiJ The MQ7 sensor datasheet can be found below: https://www.sparkfun.com/datasheets/S... Carbon monoxide sensor in Home Assistant - everyone does it wrong! #carbonmonoxide #sensor #homeassistant #CO #tastethecode 00:00 - Introduction to MQ7 sensor 01:05 - Overview of the final CO monitor device 01:27 - How to properly use the MQ7 sensor 02:08 - Overview of available modules for the MQ7 sensor 02:40 - ESPHome recommended modification 03:44 - Sponsor info 04:24 - How I modified my MQ7 module 05:05 - Sensor calibration 05:35 - Creating an enclosure 06:19 - Code for the MQ7 sensor in Home Assistant 07:08 - Testing the sensor readings 08:02 - Challenges and issues with the modification 09:50 - Summary and next steps Main Site and blog: https://www.tastethecode.com Facebook:   / tastethecode   Instagram:   / taste_the_code   Twitter:   / taste_the_code   Get exclusive Taste The Code t-shirts and merch at https://teespring.com/taste-the-code Design great PCBs with Altium designer and get great discount! http://aklam.io/vb3uTw This video is a part of a 26 video series on Home Automation DIY Devices as part of the Alphabet Superset challenge! https://www.alphabetsuperset.com/ Thanks @struthless for organizing this! #alphabetsuperset