Altium Designer:
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Altium 365:
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Octopart, components search engine:
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Download Circuit diagram and programming:
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Subscribe to my New YouTube Channel, if you want to watch my videos in Hindi/Urdu
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DHT21 related video:
ESP8266 and NRF24L01 Gateway for Arduino IoT Cloud, DHT21 Sensor, ESP8266 Project, IoT project
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Project Description:
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Whenever we talk about Temperature and Humidity Monitoring, the very first sensor that pops up in everyone’s mind is the DHT11 Temperature and Humidity Sensor. Despite of the fact that it’s extremely slow and it has a low temperature and humidity detection range. it’s still one of the most commonly used sensors throughout the world. The main reason behind its popularity is that because everyone including me is only using the DHT11 Temperature and Humidity sensor for testing IoT platforms, displays, and HMI screens etc.

Why only DHT11 Sensor? We can also try other sensors in the same series like for example DHT21 and DHT22 which can also be used for measuring the temperature and Humidity. DHT11, DHT21, and DHT22 all these three sensors have got different specs and features while their use is exactly the same.

So, in today’s episode, you will learn how to make a simple temperature and humidity monitoring system using DHT21 or AM2301 Sensor, Arduino Nano, SSD1306 Oled Display Module, and a 5v Buzzer. Since this is a getting started tutorial, I will try my level best to explain its technical specs, features, it’s interfacing with Arduino, and programming. So, without any further delay let’s get started!!!



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Amazon Purchase links:
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Arduino Nano USB-C Type ( recommended):
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ESP32 WiFi + Bluetooth Module for iOT Projects (recommended), more IO pins, improved speed, and supports a Lipo Battery:
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SSD1306 Oled display Module
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DHT21/AM2301 Sensor
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Other must-have Tools and Components:

Arduino Uno, Nano, Mega, Micro "All types of Arduino Boards":
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Top Arduino Sensors:
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Super Starter kit for Beginners
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Top Oscilloscopes
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Variable Supply:
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Digital Multimeter:
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Top Soldering iron kits: "best"
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Top Portable drill machines:
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Jumper Wires:
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3D printers:
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CNC Machines:
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Electronics Accessories:
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Hardware Tools:
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DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I will receive a small commission. This helps support the channel and allows me to continue to make videos like this. Thank you for your support!
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About the Electronic Clinic:
Electronic Clinic helps the students and other professionals to learn electronics, designing, and programming. Electronic Clinic has tutorials on Arduino, Arduino Nano, Raspberry PI, image processing, gsm based projects, Bluetooth based projects, esp8266 projects, Nodemcu projects, robotics, desktop application designing and programming, PLC, SCADA, RC Planes, Electronics, Power Generation, HMI, and much more. Check my Playlists.

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