Take a look here
1 Like
I have looked there before posting here. Unfortunately it seems that Pcf8574 can’t use “pages” 
You only need the platform: lcd_pfcf8576 once, remove the second one and use the update_interval to show the pages the right number of seconds, for instance 3 seconds.
So change your code to:
display:
- platform: lcd_pcf8574
dimensions: 20x4
address: 0x27
id: lcd
update_interval: 3s
lambda: |-
static bool page1 = true;
if (page1 ) {
it.printf(5, 1, "%.1f", id(tempindoor).state);
it.printf(5, 3, "%.1f", id(moistindoor).state);
it.print(0,0, "Temperatura unutra:");
it.print(2,2, "Relativna vlaga:");
} else {
it.printf(5, 1, "%.1f", id(absolutehumidity).state);
it.printf(5, 3, "%.1f", id(dewpoint).state);
it.print(0,0, "Apsolutna vlaga:");
it.print(2,2, "Temp.kondenzacije:");
}
page1 = !page1;
2 Likes
Thanks a lot @jsuanet ! It works like I want it to!
Where I can learn to code lambda like your example?
I’m happy for you it works and you want it.
That depends on your programming experience. Lambda’s are programmed in C++, so if you have experience with other program languages it is not so difficult, otherwise I could be a steep learning curve. There are a lot of example’s on the internet, so Google is your best friend. You can also find a lot of information in the ESPHome docs and sometimes looking at the ESPHome code on github can also be very helpful.
1 Like
Do you know how to get ° sign on display? It is easy to do in Arduino but in EspHome… 
You need a font that has the degree symbol.
Here’s some code I use:
font:
- file: 'fonts/GoogleSans-Medium.ttf'
id: myfont
size: 13
glyphs:
['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R',
'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', ' ', 'a', 'b', 'c', 'd', 'e',
'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
't', 'u', 'v', 'w', 'x', 'y', 'z', '°', ':', '-']
display:
- platform: ssd1306_i2c
model: "SSD1306 128x64"
reset_pin: GPIO16
brightness: 0.1
address: 0x3C
lambda: |-
it.line(0, 20, 127, 20);
it.line(0, 63, 127, 63);
it.line(0, 20, 0, 63);
it.line(127, 20, 127, 63);
it.print(13, 0, id(myfont), "- CV MONITOR -");
it.printf(3, 29, id(myfont), "AANVOER:");
it.printf(it.get_width() - 3, 21, id(myfont), TextAlign::TOP_RIGHT, "%.f°C", id(cv_aanvoer).state);
it.printf(3, 43, id(myfont), "RETOUR:");
it.printf(it.get_width() - 3, 35, id(myfont), TextAlign::TOP_RIGHT, "%.f°C", id(cv_retour).state);
it.printf(3, 57, id(myfont), "ELGA PWR:");
it.printf(it.get_width() - 3, 49, id(myfont), TextAlign::TOP_RIGHT, "%.fW", id(elga_vermogen).state);
How to use external fonts is explained here. The use of glyphs is entirely optional, it limits the characters you can use in return for a smaller binary file.
LCD display have only one font and it is burned in its firmware. You can’t use other font like in graphics displays.
In Arduino any character can be printed with simple chr(number) and display will show it.
Use a ~ for that 
Oh duh, of course 
With the help of my friend Google I found this : ESPHome LCD Screen lcd_pcf8574 draw / print degree symbol · GitHub
So if your temperatue is in degrees Celsius, the line for tempindoor would be:
it.printf(5, 1, "%.1f %cC", id(tempindoor).state, 0xDF);
3 Likes
I always used
It worked perfectly since ever for me to get the degree symbol printed 
Where you put ~ ? I tried but get - on display
Like that for example:
it.printf(0, "%.0f~C", id(tempindoor).state);
Dude, fantastic your help, I’ve been looking for this for a long time.
Let me abuse your goodwill!
Is there a way to implement more pages, three or even four, for example?
Again thank you very much for the support.
You can make as many pages as you want, if you change the structure a little bit, that would be something like this (not tested)
display:
- platform: lcd_pcf8574
dimensions: 20x4
address: 0x27
id: lcd
update_interval: 3s
lambda: |-
static int current_page_num = 1;
int number_of_pages = 4;
switch (current_page_num) {
case 1:
it.print(0,0, "this is page 1 line 1");
break;
case 2:
it.print(0,0, "this is page 2 line 1");
break;
case 3:
it.print(0,0, "this is page 3 line 1");
break;
case 4:
it.print(0,0, "this is page 4 line 1");
break;
default:
break;
}
current_page_num += 1;
if (current_page_num > number_of_pages) {
current_page_num = 1;
}
2 Likes
Much appreciated!
Worked perfectly.
Health and peace!
I was looking for another way to print a degree symbol and found my own link lol. I added the use of ~ in the essential link, since on some screens (depending on the firmware) the character in HEX mode is not well received.
Thank you for the contribution!
Hello
Can someone help me please 
This code worked fine.
But i want to switch the pages with a gpio button/switch but i dont know why.
I tryd many things but nothing worked. My las try was:
globals:
- id: current_page_num
type: int
restore_value: no
initial_value: '1'
display:
- platform: lcd_pcf8574
dimensions: 20x4
address: 0x27
id: my_display
update_interval: 10s
lambda: |-
if (id(current_page_num) == 1) {
it.strftime("It is %H:%M on %d.%m.%Y", id(my_time).now());
}
if (id(current_page_num) == 2) {
it.printf(0, 0, "%s", id(IP).state.c_str());
it.printf(0, 1, "%s", id(ssid).state.c_str());
it.printf(10, 1, "%.0f dBm", id(wlan_signal).state);
it.printf(0, 3, "%s", id(uptime_human).state.c_str());
}
if (id(current_page_num) == 3) {
it.printf(0, 0, "%.0f Watt", id(Watt).state);
it.printf(0, 1, "%.0f Ampere", id(Ambere).state);
it.printf(0, 2, "%.0f Volt", id(Volt).state);
it.printf(0, 3, "%.0f kWh", id(kWhTotal).state);
button:
- platform: gpio
pin: D5
name: Button
id: Button
on_press:
- lambda: |-
current_page_num += 1;
if (current_page_num > 3) {
current_page_num = 1;
}
return (id(current_page_num).state)
TNX in advance