Copyright (c) 2020-2021 Christian Heinrichs. All rights reserved.
A work in progress device to get familiar with ESP82xx, misc sensors, Github, etc.
Monitor the climate in your office and get warned when it's unhealthy or you should take a break. Set a timer in 15min steps (15, 30, ..., 120min) to remind you to take a break.
CO2-, Temp-, Hum-Sensor with Display and visual warnings and Break Timer. Based on Wemos D1 mini, MH-Z19B CO2-Sensor, OLED RGB 1.5" SPI Display 128x128, BME280, Touch-Sensor
Version: 1.00 18.02.2021
The goal is to display the sensor values in green, yellow, red, cyan based on their values. Also include a timer to remind me having a break from my work from time to time.
To Do List
- Think about how to use the additional sensor values Pressure and Altitude from BME280.
To protect the display from burn in effects I have extended the Adafruit_SSD1351 lib to include a dim function.
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Adafruit_SSD1351.h
void dim(uint8 contrastlevel = 15); // Display contrast 0-15 -
Adafruit_SSD1306.cpp
// Dim the display via CONTRASTMASTER 0-15 void Adafruit_SSD1351::dim(uint8_t contrastlevel) { sendCommand(SSD1351_CMD_CONTRASTMASTER, &contrastlevel, 1); }