Mine monitors Co2, so if you’re doing anything else you will have to delete a lot of stuff i’m afraid Control CO2 Bouwpakket (CO2, temperatuur en relatieve vochtigheid sensor) – Control CO2 )
For reference this is the guide I had initially used (before the new version of the software)
Governments are pushing CO2 sensors to fight the COVID-19 pandemic, but proper ventilation is equally important for our health and even our cognitive performance.In this blog post we'll look at a DIY CO2 sensor: how it runs ESPHome, how it integr...
Do mind the font, I remember I had to download them
And the code i’m running now
esphome:
name: "air-quality-indoor"
friendly_name: Co2 reader blue cloud
platform: ESP32
board: "featheresp32"
wifi:
networks:
-[put your super secret stuff here]
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "[put your super secret stuff here]"
password: [put your super secret stuff here]
logger:
logs:
component: ERROR
# Enable Home Assistant API
api:
encryption:
key: "[put your super secret stuff here]"
ota:
password: "[put your super secret stuff here]"
captive_portal:
# CO2 sensor
uart:
rx_pin: 27
tx_pin: 26
baud_rate: 9600
# Dipslay driver: ST7789
spi:
clk_pin: GPIO18
mosi_pin: GPIO19
font:
- file: "/config/esphome//fonts/Oswald-Light.ttf"
id: font_70
size: 70
glyphs: 0123456789 # Only used for CO2 level
- file: "/config/esphome//fonts/Oswald-Light.ttf"
id: font_30
size: 30
color:
- id: color_black
red: 0%
green: 0%
blue: 0%
white: 0%
- id: color_green
red: 0%
green: 100%
blue: 0%
- id: color_yellow
red: 100%
green: 100%
blue: 0%
- id: color_orange
red: 100%
green: 55%
blue: 0%
- id: color_red
red: 100%
green: 0%
- id: color_white
red: 100%
green: 100%
blue: 100%
- id: color_blue
red: 0%
green: 0%
blue: 100%
# Define a PWM output on the ESP32
output:
- platform: ledc
pin: GPIO04
id: gpio_04_backlight_pwm
# Define a monochromatic, dimmable light for the backlight
light:
- platform: monochromatic
output: gpio_04_backlight_pwm
name: "Display Backlight"
id: back_light
restore_mode: ALWAYS_ON
display:
- platform: ili9xxx
model: st7789v
#TTGO TDisplay 135x240
dimensions:
height: 240
width: 135
offset_height: 40
offset_width: 52
# Required or the colors are all inverted, and Black screen is White
invert_colors: true
id: my_display
cs_pin: GPIO5
dc_pin: GPIO16
reset_pin: GPIO23
#brightness: 100%
rotation: 90
pages:
# Page 1: Current CO2 levels
# 0 - 1000 -> Green
# 1000 - 1600 -> Yellow
# 1600 - 2000 -> Orange
# >2000 -> Red
- id: page1
lambda: |-
if(!id(co2_sensor).has_state() ){
it.print(
it.get_width()/2,
it.get_height()/2,
id(font_70),
color_white,
TextAlign::CENTER,
"Starting..."
);
return;
}
auto bg_color = id(color_black);
auto text_color = id(color_green);
auto co2 = id(co2_sensor).state;
if(co2 > 1000) text_color = id(color_yellow);
if(co2 > 1600) text_color = id(color_orange);
if(co2 > 2000){
text_color = id(color_white);
bg_color = id(color_red);
}
it.filled_rectangle(0, 0, it.get_width(), it.get_height(), bg_color);
it.printf(
it.get_width()/2,
it.get_height()/2,
id(font_70),
text_color,
TextAlign::CENTER,
"%.0f",
co2
);
# Page 2: WiFi information
- id: page2
lambda: |-
it.print(
0, 0,
id(font_30),
id(color_white),
"WiFi details"
);
it.printf(
0, 30,
id(font_30),
id(color_white),
"%s",
id(wifi_ssid).state.c_str()
);
it.printf(
0, 60,
id(font_30),
id(color_white),
"%s",
id(wifi_ip_addr).state.c_str()
);
# does not work anymore with newer version
#switch:
# - platform: gpio
# name: "Backlight co2"
# pin: GPIO4
# id: backlight
# internal: true
sensor:
- platform: mhz19
co2:
name: "CO2 Indoor"
id: "co2_sensor"
temperature:
name: "Temperature"
internal: true
update_interval: 60s
automatic_baseline_calibration: false
- platform: dht
model: AM2302
pin: 15
temperature:
name: "co2 temp"
humidity:
name: "co2 Humidity"
update_interval: 60s
text_sensor:
- platform: wifi_info
ip_address:
internal: true
id: wifi_ip_addr
ssid:
internal: true
id: wifi_ssid
binary_sensor:
# Button to cycle through pages on the display
- platform: gpio
pin:
number: GPIO35
inverted: true
id: button_1
on_click:
then:
- display.page.show_next: my_display
- component.update: my_display
# Button to toggle the backlight (for use at night)
- platform: gpio
pin:
number: GPIO0
inverted: true
id: button_2
on_click:
then:
- light.toggle:
id: back_light
