Looks like this is a project I need to get working and create a howto.
Famous last words 
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Ok, got it working. To receive the nextion codes in homeassistant the page id and button id need to match and above that the “send component ID” on touch press event and touch release event need to be “checked”.
binary_sensor:
- platform: nextion
page_id: 0
component_id: 3
name: "Nextion.Button.Doorbel"
- platform: nextion
page_id: 1
component_id: 2
name: "Nextion.Button.Package delivered"
Also on "uploading the compiled file from the nextion editor you need to do via SD card you must use “file - TFT file output” and put that file on SD card, boot display, remove SD card reboot display…
and be sure RX is connected to TX and vice versa.
One burning remaining question:
How can I send such a TFT file via ESPhome!? I do want to be able to change the layout of the display later on without opening a steady mounting case to hassle with an SD card… possible?
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That’s great now get the buttons to get feedback from HA . 
What do you mean?
So I am pretty far now… have a display working with buttons, states in HA, nodered connected with telegram. pressing a touch button direct message etc.
1 thing can’t get working…
I can do a multiple line in nextion editor:
I can send a new value via:
display:
- platform: nextion
lambda: |-
it.set_wait_for_ack(false);
it.set_component_text("t10", id(t10_text).state.c_str());
text_sensor:
- platform: homeassistant
id: t10_text
entity_id: sensor.nextion_text1
but that value, if longer than 1 sentence is not divided over multiple lines, it just shows “off-screen”:
Any thoughts on how to “divide” over mutliple lines?
This suggests that it can’t be done https://forum.arduino.cc/index.php?topic=604185.15
But of course that was just the first thing google found, so the answer is I am still not sure.
ok, can be done. in the editor need to set “isbr” to true.
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Question is now black (burned) 
Dear People, I have a problem with my esphome configuration with an nextion display. Actually I have it completely working, only I get an annoying message. I use a number of sensors that I want to show on page 3. Now I have the config so that this also happens. But if I am now on a different page then I get a warning (yellow) in my log from my esphome (see attachment). I expect to somehow have to point my sensors to page3 but I just don’t know how to do this. i hope you can help me with this.
CODE ESPHOME
uart:
rx_pin: D9
tx_pin: D10
baud_rate: 9600
display:
-
platform: nextion
update_interval: 1s
lambda: |-
it.set_wait_for_ack(false);auto time_text = id(sntp_time).now().strftime("%X"); it.set_component_text("text_time", time_text.c_str()); auto date_text = id(sntp_time).now().strftime("%x"); it.set_component_text("text_date", date_text.c_str()); auto week_text = id(sntp_time).now().strftime("%W"); it.set_component_text("weeknr", week_text.c_str()); auto time = id(sntp_time).now(); it.set_component_text_printf("hour","%02d",time.hour); it.set_component_text_printf("minut","%02d",time.minute); it.set_component_text_printf("outside","%2.1f", id(temp).state); it.set_component_text_printf("vocht","%2.1f", id(vocht).state); it.set_component_text_printf("rain","%2.1f", id(rain).state); it.set_component_text_printf("lux","%2.1f", id(lux).state); it.set_component_text_printf("luxin","%2.1f", id(lux_woonkamer).state); it.set_component_text_printf("vochtin","%2.1f", id(hum_woonkamer).state); it.set_component_text_printf("inside","%2.1f", id(temp_woonkamer).state);
time:
- platform: sntp
id: sntp_time
sensor:
-
platform: homeassistant
id: temp
entity_id: sensor.sensor_box_am2301_13_temperature -
platform: homeassistant
id: vocht
entity_id: sensor.sensor_box_am2301_13_humidity -
platform: homeassistant
id: rain
entity_id: sensor.tfa_80_0c_rain_total -
platform: homeassistant
id: lux
entity_id: sensor.sensor_box_bh1750_illuminance -
platform: wifi_signal
name: “WiFi signal HMI”
update_interval: 60s -
platform: hdc1080
temperature:
name: “Temp_woonkamer”
id: temp_woonkamer
humidity:
name: “Humidity_woonkamer”
id: hum_woonkamer
update_interval: 5s -
platform: bh1750
id: lux_woonkamer
name: “BH1750_lux_woonkamer”
address: 0x23
measurement_time: 69
update_interval: 5s
i2c:
sda: D2
scl: D1
scan: False
binary_sensor:
-
platform: nextion
page_id: 1
component_id: 3
name: “hmi_rolluik_keuken_omhoog” -
platform: nextion
page_id: 1
component_id: 6
name: “hmi_rolluik_keuken_omlaag” -
platform: nextion
page_id: 1
component_id: 4
name: “hmi_rolluik_straat_omhoog” -
platform: nextion
page_id: 1
component_id: 8
name: “hmi_rolluik_straat_omlaag” -
platform: nextion
page_id: 1
component_id: 5
name: “hmi_voordeur_omhoog” -
platform: nextion
page_id: 1
component_id: 7
name: “hmi_voordeur_omlaag” -
platform: nextion
page_id: 4
component_id: 3
name: “100%nl” -
platform: nextion
page_id: 4
component_id: 5
name: “Qmusic” -
platform: nextion
page_id: 4
component_id: 6
name: “538” -
platform: nextion
page_id: 4
component_id: 4
name: “woonkamer_speaker_uit” -
platform: nextion
page_id: 4
component_id: 10
name: “volume_12” -
platform: nextion
page_id: 4
component_id: 9
name: “volume_14” -
platform: nextion
page_id: 4
component_id: 8
name: “volume_16” -
platform: nextion
page_id: 4
component_id: 7
name: “volume_18”
switch:
-
platform: restart
name: “Reset HMI” -
platform: shutdown
name: “Uitschakelen HMI”
output:
- platform: esp8266_pwm
pin: D8
id: pwm_output
light:
- platform: monochromatic
output: pwm_output
name: “buzzer”
WARNINGS
[23:58:09][D][nextion:209]: Got touch page=3 component=1 type=PRESS
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
[23:58:10][W][nextion:177]: Nextion reported variable name invalid!
Please format all your code correctly.
What do you mean ?
Hi!
I’m trying to display the state of the binary sensor ON and OFF, I can’t display it on the screen, I’ve tried various options but unsuccessfully.
sensor:
- platform: homeassistant # Kitchen window
id: win_kitchen
entity_id: sensor.window_kitchen
and
display:
- platform: nextion
id: teplomer
update_interval: 5s
lambda: |-
it.set_component_text_printf("winkitchen","%",id(win_kitchen).state);
I try %s (String of characters) but nothing. How to print binary state of sensor?
Log of esphome [00:15:32][W][homeassistant.sensor:014]: Can’t convert ‘ON’ to number!
P.S. It is work i understand
text_sensor:
- platform: homeassistant # Kitchen window
id: win_kitchen
entity_id: sensor.window_kitchen
and
it.set_component_text_printf("winkitch","%s",id(win_kitchen).state.c_str());
I try to get mine to work but I got error from the esphome log screen “received unknown filler end bytes from Nextion!”. What did I do wrong? I check all the examples but unable to get it to work with esphome.
On the esphome long it showed message of “Sending command ‘t0.txt=Hellooo’ failed because no ACK was received … : Waiting for ACK timed out!” but nothing on the display. I flip the tx and rx but still same result.
I’m plugging my nextion PR for esphome.
It has a ton of improvements, including tft Ota. We are working hard on getting this merged.
7 Likes
Been following what your are doing and thanks for that.
Will the documentation also be updated?
There is a PR for it and will be updated once we get closer to merging. I actually am planning on updating it soon though.
2 Likes
Hi!
Did you solve this?