ErikDorstel / envObserver

ESP32 based environment monitor

envObserver

ESP32 based environment monitor

Features

• uses W5500 PHY/MAC for 100Base-T ethernet
• uses ADS1115 16Bit ADC with transformer and rectifier
• measures peak voltage, rms voltage and frequency
• uses BME280 as environment sensor
• uses LTV845 optocoupler for the digital inputs
• simple HTTP polling interface
• two channel relay output

GPIO W5500 (SPI)

• GPIO 23 - MOSI
• GPIO 19 - MISO
• GPIO 18 - CLK
• GPIO 5 - CS

GPIO ADS1115 (I2C)

• GPIO 21 - SDA
• GPIO 22 - SCL
• GPIO 25 - ALRT

GPIO BME280 (I2C)

• GPIO 17 - SDA
• GPIO 16 - SCL

GPIO LTV845

• GPIO 34 - Input 0
• GPIO 35 - Input 1
• GPIO 36 - Input 2
• GPIO 39 - Input 3

GPIO relay output

• GPIO 32 - Output 0
• GPIO 33 - Output 1

Development Hardware

Schematic

Water Sensor

Web UI