Let’s see whats the difference between ESP32 and ESP8266? Both ESP32 and ESP8266 are WiFi based SOC (Systems on Chop). Both have 32-bit processor, ESP32 is dual core 80Mhz to 240MHz CPU and ESP8266 is 160MHz single core processor. In depth comparison is given below.
All posts by Manoj R. Thakur
ESP8266 NodeMCU HTTPS Secured POST Request
In this example we learn how to send Secured POST request to a secured https web page using NodeMCU or ESP8266? As we know all web pages are HTTP protocols, GET and POST are methods of communicating between web browser and the server. Also you look towards server side php Example coding. If you are looking for HTTPS GET method read here.
ESP32: DHT11/22 Humidity Temperature Sensor Interfacing Example
In this tutorial we are interfacing DHT11 or DHT22 Humidity temperature sensor with ESP32 DevKit.
The DHT11 (or DHT22 and similar) are cheap temperature and humidity sensors. The communicate with a ESP32 is over a single wire, but unfortunately it is not compatible with the 1-Wire protocol defined by Dallas Semiconductors.
The electric connection to the ESP32 DevKit is very simple, as the DHT series can be powered direct with 3.3V. Only 3 wires are needed: VCC, GND and the data line. Data Line is connected to GPIO15 (D15).
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ESP8266 DHT11 Humidity Temperature Data logger
In this tutorial we are interfacing DHT11 or DHT22 Humidity temperature sensor with ESP8266 NodeMCU. We are making complete Humidity and Temperature data logger with DHT11 and NodeMCU. Data logger web server with real time graphs and tables, mostly seen on thingspeak. But this time we are putting complete graphs and tables all inside NodeMCU without using thingspeak. For this we need graphs library that we are using from chartsjs.org an open source Chart drawing library and Knowledge of alax, html and javascript.
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Interfacing DHT11 with NodeMCU Example
In this tutorial we are interfacing DHT11 or DHT22 Humidity temperature sensor with NodeMCU.
The DHT11 (or DHT22 and similar) are cheap temperature and humidity sensors. The communicate with a ESP8266 is over a single wire, but unfortunately it is not compatible with the 1-Wire protocol defined by Dallas Semiconductors.
The electric connection to the NodeMCU is very simple, as the DHT series can be powered direct with 3.3V. Only 3 wires are needed: VCC, GND and the data line.