Hello @wilfried

Arduino example：
https://101010.fun/iot/m5stickc-plus-firststep.html

Hello @frangimeno2000

You can see the case of ESO-NOW below.

RANDOM NEAD TUTORIALS： ESO-NOW
https://randomnerdtutorials.com/?s=ESP-NOW

There is a list below.

M5Unified
https://github.com/m5stack/M5Unified

JPG has several Cilor Mode.
Use as JPG RGB MODE
For example, you can do it with GIMP.

Hello@erich

LVGL 8.0.2 is listed below.

LVGL 8.0.2
LVGL 8 demo with M5Stack , M5Stamp C3
https://forum.m5stack.com/topic/4161/lvgl-8-demo-with-m5stack-m5stamp-c3

Hello @wwhite

Please show me a picture with the battery attached.

Hello @ANDYSM

M5Stack Atom Lite: Long response times and wifi connection losses
https://forum.m5stack.com/topic/4527/m5stack-atom-lite-long-response-times-and-wifi-connection-losses

M5Stack Community
New CH552 firmware for Short-Wifi-Issue of M5Atom/Stick/TimerCAM/etc. : About 9 months ago

Hello @RolfF

It's a design mistake.
It is a basic mistake to add 5V to 3.3V system.
5V enters the RF circuit, causing deterioration or damage.
There are many cases where ATOM has already broken.
:
M5Stack Community
Short Wifi effective range and IO0=3.9V issue with Lite and Matrix : About a year ago
https://forum.m5stack.com/topic/3048/short-wifi-effective-range-and-io0-3-9v-issue-with-lite-and-matrix
:
M5Stack Community
New CH552 firmware for Short-Wifi-Issue of M5Atom/Stick/TimerCAM/etc. : About 9 months ago
https://forum.m5stack.com/topic/3768/new-ch552-firmware-for-short-wifi-issue-of-m5atom-stick-timercam-etc
:
Bugs and measures for M5Stack ATOM : 2021.10.10
https://macsbug.wordpress.com/2021/10/10/bugs-and-measures-for-m5stack-atom/
:
How to not change FW.
Other measures : Low the voltage of GPIO_0.
The voltage on GPIO_0 decreases and the transmit power increases.
digitalWite(GPIO_0,LOW);

Hello @greenleaf

An example using a kalman filter.

https://homemadegarbage.com/reactionwheel03

https://elchika.com/article/52f804c0-e205-4185-8da4-a32f5e3700ba/

Hello @ Stoni99
The same question is:
https://forum.m5stack.com/topic/4180/writing-and-re-writing-text/6