Comments on: ESP32 CYD with ESP-NOW: Receive and Display Data From Multiple Boards

By: Sara Santos

Sara Santos — Mon, 23 Mar 2026 16:20:31 +0000

That’s great.
Thanks for sharing your experience.
Regards,
Sara

By: Bob G7PAF

Bob G7PAF — Sat, 21 Mar 2026 01:56:58 +0000

bit late to the party but would like to say thanks for this project
I really am a total noob to esp stuff and found this a challenge
I had the CYD and the ESP32 boards
but not the recommend Sensors
I only had the AHT10 sensors
After a bit of jiggerypokeary with the code and a lot of head scratching and errors
I got it working and now have temp/humidity from my workshop and summer house
I can remote switch on the heater in the workshop now if i see the temp is a bit to low for me
and also see if i forgot to turn the heater off
So happy days and thanks for a really useful project

By: Juergen

Juergen — Wed, 14 Jan 2026 08:37:37 +0000

Depending on the project, I would like to use the display horizontally or vertically.
Regards
Juergen

By: Sara Santos

Sara Santos — Mon, 12 Jan 2026 17:58:47 +0000

In reply to Juergen.

Hi.
What do you mean?
What exactly do you want to do?

Rotate the screen?
You may also need to change the width with the height.

Regards,
Sara

By: Juergen

Juergen — Sat, 10 Jan 2026 12:59:13 +0000

Thanks for the quick reply.
But if I use the program line:
lv_display_set_rotation(disp, LV_DISPLAY_ROTATION_270);
in:
lv_display_set_rotation(disp, LV_DISPLAY_ROTATION_180);
change (display rotated by 90 degrees) the switching no longer works.
What else would I have to change?

By: Sara Santos

Sara Santos — Sat, 10 Jan 2026 12:09:38 +0000

In reply to Juergen.

Hi.
Those are defined as tabs.
// Add 3 tabs (the tabs are page (lv_page) and can be scrolled
lv_obj_t * tab1 = lv_tabview_add_tab(tabview, “BOARD #1”);
lv_obj_t * tab2 = lv_tabview_add_tab(tabview, “BOARD #2”);

Regards,
Sara

By: Juergen

Juergen — Sat, 10 Jan 2026 11:29:49 +0000

I have a question about the program code for the display:
How and where is the position for the buttons “BOARD #1, BOARD #2” defined?

By: Jason Loy

Jason Loy — Wed, 08 Oct 2025 20:12:02 +0000

If I have a parent object like a button, and I just want to update the label based on the qued value, is it better to set the object label (child) as my global struct variable or to set the parent as the variable? I’m only updating the text of the label from the que. Thoughts?

By: Sara Santos

Sara Santos — Sun, 07 Sep 2025 14:44:10 +0000

In reply to Bryan Staines.

Hi.
Yes, you can do that.
Regards,
Sara

By: Bryan Staines

Bryan Staines — Sat, 06 Sep 2025 11:07:53 +0000

Hi Sara
If I want to transmit , say, every minute can I just change the “const long interval” to 60000? Or to 600000 for every 10 mins?
Fabulous little project, I’ve learned a lot, thank you.
Bryan