Fridge Logger

The myth of the open refrigerator - how much energy is getting lost

An ESP32 based measuring device for a domestic refrigerator. The purpous is to analysing the correlation between door openings and energy conmsumption.

Build

Software

Google Apps Script

1. Create a new Google Sheets document.
2. Add Google Apps Script to a Google Sheets file Connecting Google Apps Script.
3. Paste the code in your Google Apps script.gs file Source.

Software ESP32

1. Install PlatformIO extension.
2. Configure your Wifi setupWifi.h.
3. Configure your Google Script endpoint HTTP endpoint.
4. Connect your ESP32 an run PlatformIO "upload".

Hardware

Components

Description	Component	amount
Microcontroller	ESP32	1
Temperature sensor	DHT22	5
Distance sensor	HC-SR04	1
Current transformer	ZMCT103C	1

Wiring diagramm

Architecture

Software

Hardware