ESP32 based environment monitor
- 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 23 - MOSI
- GPIO 19 - MISO
- GPIO 18 - CLK
- GPIO 5 - CS
- GPIO 21 - SDA
- GPIO 22 - SCL
- GPIO 25 - ALRT
- GPIO 17 - SDA
- GPIO 16 - SCL
- GPIO 34 - Input 0
- GPIO 35 - Input 1
- GPIO 36 - Input 2
- GPIO 39 - Input 3
- GPIO 32 - Output 0
- GPIO 33 - Output 1