ESP32 beehive (WiFi version)

Beehives online monitoring based on the ESP32 and others sensors. WiFi version.

To build a project, you need to download all the necessary libraries and create the settings.cpp file in the src folder:

// Project settings
#include "IPAddress.h"

struct Settings
{
    const char *wifiSSID = "YYY";
    const char *wifiPassword = "ZZZ";
    const char *version = "1.0.0";
    const char *firmwareVersionUrl = "http://example.com/version.txt";
    const char *firmwareBinUrl = "http://example.com/firmware.bin";
    IPAddress ip = IPAddress(192, 168, 43, 223);
    IPAddress gateway = IPAddress(192, 168, 43, 1);
    IPAddress subnet = IPAddress(255, 255, 255, 0);
};

Features

• measuring the temperature and humidity inside the hive
• measuring the sound level inside the hive
• triggers an alarm (Blynk notification) when someone opens the hive - a magnetic contact sensor
• triggers an alarm (Blynk notification) when someone picks up the hive - a magnetic contact sensor

Currents list:

• ESP32-WROOM-32U
• 3x SHT30 digital temperature/humidity sensor
• 2x INA219 sensor
• 3x GY-MAX4466 microphone
• 3x Magnetic contact sensor
• 12V MPPT Solar Panel Controller for 18650 Battery
• 1x - 4x 3.7v 3400 mAh 18650 Lithium battery
• Solar panel 12V 12W (or 2x 6V 6W panels in series)
• 3x 9 pins COM cabels and some male/female connectors

Save battery power:

• Set CPU frequency to 30% (80Mhz) - setCpuFrequencyMhz(80);
• Setup lowest WiFi power - WiFi.setTxPower(WIFI_POWER_MINUS_1dBm);
• Setup static IP, Gateway and DNS (quicker WiFi connection) - WiFi.config(settings.ip, settings.gateway, settings.subnet, settings.gateway);
• When disconnect WiFi, turn off WiFi modem - WiFi.disconnect(true);

Schema:

Powering 5V -> 3.3V:

3v3 regulator - https://randomnerdtutorials.com/esp8266-voltage-regulator-lipo-and-li-ion-batteries/