In the code below, if I include the basic “it.print(“8765432”);”
8765432 is written to the max7219 segment display and all sensor states are available in home assistant. If I substitute that printf statement with the one that is commented out below, the file compiles and loads but the Log never starts.
I’ve looked at several examples and through the documentation but I can’t find my mistake.
Thanks for any help!
# Name the device and include libraries used
esphome:
name: co2_monitor
# Specify what type of controller board is being used
esp32:
board: esp32dev
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API
api:
services:
- service: mhz19_calibrate_zero
then:
- mhz19.calibrate_zero: garage_co2
# MH-Z19 CO2 monitgor setup
uart:
- id: co2_uart
rx_pin: GPIO16
tx_pin: GPIO17
baud_rate: 9600
- id: prop_uart
rx_pin: GPIO9
tx_pin: GPIO10
baud_rate: 9600
sensor:
- platform: mhz19
id: "garage_co2"
co2:
name: "MH-Z19 CO2 Value"
id: "co2_value"
temperature:
name: "MH-Z19 Temperature"
id: "temp_value"
update_interval: 5s
automatic_baseline_calibration: true
uart_id: co2_uart
# Example configuration entry
spi:
clk_pin: GPIO13
mosi_pin: GPIO14
display:
- platform: max7219
cs_pin: GPIO12
num_chips: 1
lambda: |-
it.print("8765432");
# it.printf(0,1,"%.0f", id(co2_value).state);
# Set a password to update the controller over the wifi
ota:
password: !secret ota_password
# Setup the wifi networds that will be used
wifi:
networks:
- ssid: !secret wifi_ssid_house
password: !secret wifi_password_house
- ssid: !secret wifi_ssid_farm
password: !secret wifi_password_farm
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "co2monitor"
password: !secret ap_password
# Tell controller where to get the current time
time:
- platform: homeassistant
id: homeassistant_time
# Set up MQTT this will allow us to wake up the controller to send updated code
mqtt:
broker: '10.0.0.59'
username: !secret mqtt_user
password: !secret mqtt_password
discovery: false
discovery_retain: false
# Tell the controller our location so it can determine sunrise and sunset
sun:
latitude: 37.291700°
longitude: -95.909630