ESP32-C3 | ENS160 + AHT21

👨‍💻 Author: bgramaje

This project collects environmental data using the ENS160 and AHT21 sensors and publishes the data to an MQTT broker. It also uses NTP for timestamping the data.

Table of Contents

• Hardware Requirements
• Software Requirements
• Installation
• Configuration
• Usage

Hardware Requirements

• ESP32 or compatible microcontroller
• ENS160 sensor
• AHT21 sensor
• WiFi network

Software Requirements

• PlatformIO IDE with VSCode
• MQTT broker, here mosquitto is the one used.

Installation

1. Clone this Repository:

   • Clone or download this repository.

2. Install Dependencies:

   • Open the cloned project in PlatformIO IDE.
   • PlatformIO should automatically install the required libraries defined in platformio.ini.

Configuration

1. WiFi Configuration:

   • Update the WIFI_SSID and WIFI_PASSWORD constants in src/main.cpp with your WiFi credentials.

2. MQTT Configuration:

   • Update the MQTT_HOST, MQTT_USER, and MQTT_PASWORD constants in src/main.cpp with your MQTT broker details.
   • Ensure the MQTT_PORT is correctly set to your MQTT broker's port (default is 1883).

3. Pin Configuration:

   • Verify the SDA_PIN and SCL_PIN constants in src/main.cpp match your hardware setup.
   • The LED_PIN is set to pin 2 by default.

Usage

1. Build and Upload the Code:

   • Connect your ESP32 to your computer.
   • Click the PlatformIO: Upload button in the PlatformIO IDE to compile and upload the code.

2. Monitor Serial Output:

   • Open the Serial Monitor in PlatformIO IDE.
   • You should see debug output indicating the status of the WiFi connection, MQTT connection, and sensor readings.

3. MQTT Data:
   • The sensor data is published to the MQTT broker under the topic sensors/<MAC_ADDRESS>, where <MAC_ADDRESS> is the MAC address of your ESP32 without colons.