Follow the next table or schematic diagram to wire the load cell to the ESP8266 board. Installing the HX711 Library There are several different libraries to get measurements from a load cell using the HX711 amplifier. We’ll use theHX711 library by bodge. It is compatible with the ESP32, E...
In this guide, you’ll learn how to send sensor readings with the ESP8266 NodeMCU board to ThingSpeak. For demonstration purposes, we’ll use aBME280 sensor, but you can easily modify the examples to use any other sensor. The ESP8266 board will be programmed using the Arduino core. ThingS...
First, connect the I2C module to the LCD. Solder Female Header pins to the LCD and connects the I2C module in such a way that the four pins of the I2C (GND, VCC, SDA, SCL) point outwards. Now,to power the circuit, connect the GND pin of the I2Cmodule t...
NodeMCU has weird pin mapping. Pin numbers written on the board itself do not correspond to ESP8266 GPIO pin numbers. We have constants defined to make using this board easier: staticconstuint8_tD0 =16;staticconstuint8_tD1 =5;staticconstuint8_tD2 =4;staticconstuint8_tD3 =0;staticconst...
NodeMCU(ESP8266) - 2 ESP32 Dev Board - 2 BMP280 Sensor - 2 DHT22 Sensor - 1 DS18B20 Sensor - 1 Breadboard USB Cable (for power and data) ESP Wi-Fi Mesh - Circuit Diagram The schematic shown below is used to construct the hardware section for ...
ESP8266 NODEMCU UART to MQTT bridge What is it The purpose of this code is to make simple bridge between any UART enabled system (Arduino, etc) and MQTT broker over WIFI network. User should simply send and receive data from UART enabled application and also send and receive data by publis...
NodeMCU is ESP8266 based development board. It features ESP-12E as its processing core. It is a 32bit MCU. It has 14 GPIO pins, single channel 10 bit integrated ADC. It supports UART, I2C, SPI communication. It is 3.3V compatible, it cannot handle 5V. If you are new to NodeMCU then...