Arduino_Projects

See related MQTT project for InfluxDB time series data records: Project Repo

Repository of various Arduino projects mostly written for home automation.

Project	Description
DHT_LDR	Read DHT11 sensor for temperature and humidity readings. Read Photosensor and control power relay based on cutoff threshold. Report readings to MQTT broker
H-PI	Read capacitive soil moisture sensors and control pump actuators. Report moisture % and pump statuses to MQTT broker.

Contents

• Requirements
• H-PI Specific Requirements
• DHT_LDR Specific Requirements

Requirements

ESP32 board support

https://dl.espressif.com/dl/package_esp32_index.json

ArduinoJson

https://github.com/bblanchon/ArduinoJson

NTPClient

https://github.com/arduino-libraries/NTPClient

pubsubclient

https://github.com/knolleary/pubsubclient

Configuration

PubSubClient.h

// MQTT_MAX_PACKET_SIZE : Maximum packet size. Override with setBufferSize().
#ifndef MQTT_MAX_PACKET_SIZE
#define MQTT_MAX_PACKET_SIZE 1024
#endif

H-PI Specific

Misc

Reference for state managment in industrial control systems

https://en.wikipedia.org/wiki/Finite-state_machine

DHT_LDR Specific

DHT sensor Library - Adafruit

https://github.com/adafruit/DHT-sensor-library

Dependency: Adafruit Unified Sensor Driver

https://github.com/adafruit/Adafruit_Sensor