Waiting for ACK timed out!

[gijsje]

Thank you for the creating this.
I have been playing with my nextion for a long time but am not able to get it to work with any programming.
The only thing i do get is:

[14:26:02][W][nextion:036]: Waiting for ACK timed out!
[14:26:02][W][nextion:083]: Sending command 'outside.txt="21.6"' failed because no ACK was received

I did change the pins around in the software and physical but nothing works

I am using a 5" display but that should not really care i guess
I also did try with another 2.4 display with the same thing

`# This is ESPHome configuration file. This goes to the esphome folder

You need to provide your WiFi ssis/password and passwords for API and OTA (or put them in your esphome/secrets.yaml)

esphome:
name: display_weather
platform: ESP8266
board: d1_mini_pro

wifi:
ssid: SSID
password: PASS
fast_connect: true

api:
password: PASS

ota:
password: PASS

logger:
baud_rate: 0 # Disable UART logging (pins GPIO1/3 are used for Nextion communication)

uart:
rx_pin: D1
tx_pin: D6
baud_rate: 9600

time:

• platform: sntp
  id: sntp_time

sensor:

• platform: homeassistant # Inside temperature
  id: temperature_inside
  entity_id: sensor.kantoor_temperatuur

• platform: homeassistant # Outside temperature
  id: temperature_outside
  entity_id: sensor.tuin_temperatuur

• platform: homeassistant # Swimming pool
  id: temperature_pool
  entity_id: sensor.keuken_koelkast_temperatuur

• platform: homeassistant # Forecast minimal temperature
  id: today_min
  entity_id: sensor.today_min

• platform: homeassistant # Forecast maximal temperature
  id: today_max
  entity_id: sensor.today_max

• platform: homeassistant # Forecast precipitation
  id: today_rain
  entity_id: sensor.today_rain

• platform: homeassistant # Forecast icon
  id: today_icon
  entity_id: sensor.today_icon

binary_sensor:

• platform: homeassistant
  id: somebody_home
  entity_id: binary_sensor.kantoor_beweging

globals:

• id: first_page # First page of the display?
  type: bool
  restore_value: no
• id: display_on # Is display on?
  type: bool
  restore_value: no

display:

• platform: nextion
  id: teplomer
  update_interval: 5s
  lambda: |-
  // Turn display on when somebody is home. Only update when display on.
  if (id(somebody_home).state) {
  if (!id(display_on)) {
  it.set_backlight_brightness(50);
  id(display_on)=true;
  }
  // Swich first/second page on each update (every 5 seconds)
  if (id(first_page)) {
  it.goto_page("forecast");
  it.send_command_printf("%s.pic=%.0f", "weather",id(today_icon).state);
  it.set_component_text_printf("minmax","%.0f/%.0f",id(today_min).state,id(today_max).state);
  if (isnan(id(today_rain).state)) {
  it.set_component_text("rain","-");
  } else {
  it.set_component_text_printf("rain","%.0f",id(today_rain).state);
  }
  auto time = id(sntp_time).now();
  it.set_component_text_printf("hour","%02d",time.hour);
  it.set_component_text_printf("minute","%02d",time.minute);
  } else {
  it.goto_page("temperature");
  it.set_component_text_printf("inside","%2.1f",id(temperature_inside).state);
  it.set_component_text_printf("outside","%2.1f",id(temperature_outside).state);
  it.set_component_text_printf("pool","%2.1f",id(temperature_pool).state);
  }
  id(first_page) = !id(first_page); // Switch page
  } else {
  // Turn off the display if nobody is home.
  if (id(display_on)) {
  it.set_backlight_brightness(0);
  id(display_on)=false;
  }
  }`

[bruxy70]

Sorry, I missed your message.

I was getting the error as well, but the display worked.
I made a change to the code not to wait for the ack.

it.set_wait_for_ack(false);

But that won't fix your issue I think. What do you mean by "nothing works". Is the display on?
Try replacing the lambda by something simple first, such as:

lambda: |-
it.set_wait_for_ack(false);
it.set_component_text("inside","test")

What does the display show?

[bruxy70]

@gijsje , BTW, you are saying that you tried with 5" display - did the Nextion Editor allow you to upload the screen I designed for 2.4" to the 5" screen?