28 May 2024


NodeMCU and HX711 are two powerful tools that can be used in various electronics projects. In this beginner’s guide, we will cover the basics of getting started with NodeMCU and HX711, and how you can use them together to create interesting projects.

NodeMCU is a development board based on the ESP8266 WiFi module. It comes with built-in WiFi capabilities, making it a great choice for IoT projects. The HX711 is a precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications.

To get started with NodeMCU and HX711, you will need the following hardware components:

– NodeMCU development board
– HX711 module
– Load cell (for measuring weight)
– Wires for connecting the components

Here are the steps to get started with NodeMCU and HX711:

1. Connect the HX711 module to the NodeMCU development board using wires. The HX711 module has four wires: VCC, GND, DT (data), and SCK (clock). Connect the VCC and GND pins to the 3.3V and GND pins on the NodeMCU board, respectively. Connect the DT and SCK pins to any digital pins on the NodeMCU board.

2. Connect the load cell to the HX711 module. The load cell will have four wires: red (power), black (ground), white (DT), and green (SCK). Connect the red and black wires to the E+ and E- terminals on the HX711 module. Connect the white and green wires to the DT and SCK pins on the HX711 module, respectively.

3. Install the necessary libraries for NodeMCU and HX711. You can use the Arduino IDE to program the NodeMCU board. Install the ESP8266 board package in the Arduino IDE and the HX711 library for interfacing with the HX711 module.

4. Write a simple sketch to read the weight data from the load cell using the HX711 module and send it to a cloud platform or display it on a screen using the NodeMCU board. You can use the example code provided in the HX711 library to get started.

5. Upload the sketch to the NodeMCU board and monitor the output in the Arduino IDE serial monitor. You should see the weight data being read from the load cell in real-time.

With these steps, you can get started with NodeMCU and HX711 and start exploring the possibilities of creating interesting projects using these tools. Experiment with different sensors and actuators to build your own IoT projects and smart devices. Have fun exploring the world of electronics and programming with NodeMCU and HX711!

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