Hello @greenleaf
An example using a kalman filter.
https://homemadegarbage.com/reactionwheel03
https://elchika.com/article/52f804c0-e205-4185-8da4-a32f5e3700ba/
I made a Nixie tube clock with M5StickC.
Creation date: 2019.06.06
Creator: macsbug
blog:https://macsbug.wordpress.com/2019/06/06/m5stickc-nixie-tube-clock/
The original author of the following three articles is macsbug.
1 . M5Stack Community / PROJECTS:
Nixie tube watch simulated on M5Stick-C
http://forum.m5stack.com/topic/1085/nixie-tube-watch-simulated-on-m5stick-
2 . hackster.io:Nixie Tube Watch Simulated on ESP32 Using the M5Stick
https://www.hackster.io/McOrts/nixie-tube-watch-simulated-on-esp32-using-the-m5stick-7ab9d9
3 . McOrts/M5StickC_Nixie_tube_Clock:jun 17,2019
https://github.com/McOrts/M5StickC_Nixie_tube_Clock
LVGL ( Light and Versatile Graphics Library )
https://lvgl.io/
How to run LVGL on M5Stack ( ESP32 ) : 2021.06.18
https://macsbug.wordpress.com/2021/06/18/how-to-run-lvgl-on-m5stack-esp32/
( Demo of M5Stack and M5Core2 )

LVGL with M5Stack Part 2 : 2021.07.03
https://macsbug.wordpress.com/2021/07/03/lvgl-with-m5stack-part-2/

CO2 monitor with M5Stack and LVGL : 2021.07.05
https://macsbug.wordpress.com/2021/07/05/co2-monitor-with-m5stack-and-lvgl/

Hello @User1234567
1: The ESPAsyncWebServer seems to be pressing the M5Stack's ButtonA.
M5.BtnA.wasPressed() conflicts with WiFi
https://forum.m5stack.com/topic/3262/m5-btna-waspressed-conflicts-with-wifi
The MAX40200 is a great idea.
I made M5Stack Wheel Module.
Creation date : 2019.08.21
Creator : macsbug
COST : JPY 1500 ( $14 )
blog : https://macsbug.wordpress.com/2019/08/21/m5-wheel-module-moio/
The following modules are also used:
1 . 2400mA Battery Module:2018.08.20
COST : JPY 760 ( $7 )
blog : https://macsbug.wordpress.com/2018/08/20/m5stack-strongest-2400-mah-battery-module/
2 . Make M5Stack Servo Module:2019.08.10
COST : JPY 330 ( $4 )
blog : https://macsbug.wordpress.com/2019/08/10/make-m5stack-servo-module/
How to run LVGL on M5Stack
https://forum.m5stack.com/topic/3613/how-to-run-lvgl-on-m5stack/1
The library has been released!
It is a library that can be used in common with M5Stack / Core2 / Tough / CoreInk / Paper / StickC, CPlus.
Buttons, touch panel, IMU, 5V output on / off to external port, etc. are available. It can also be used with ESP-IDF.
Hello @Meyer3203
Made with USB 5V TP4056 Lithium Battery Charger Module. $1
:
Parts:M5Stamp C3, Battery, Battery Charger, Diode, Switch, Wire.
Work:Connected with double-sided tape.
Operation:The RGB LED is lit on the battery.
BLOG:M5Stamp C3 and battery
https://macsbug.wordpress.com/2022/01/26/m5stamp-c3-and-battery/
Hello @Dieter_P
I don't own ATOM Lite (ESP32-PICO-D4), so I haven't checked it.
In M5Stack (ESP32-D0WDQ6-V3), there is a case where GPIO39 works without permission when using WiFi.
M5.BtnA.wasPressed() conflicts with WiFi
https://forum.m5stack.com/topic/3262/m5-btna-waspressed-conflicts-with-wifi
:
Supplement:
Example of using GPIO39.
M5Stack Basic (ESP32-D0WDQ6-V3):PULL UP with 100KΩ.
ATOM PSRAM (ESP32-V3-02):PULL UP with 5.1KΩ.
M5Stamp Pico (ESP32-PICO-D4):PULL UP with 5.1KΩ.
3.5" 480x320 display with M5Stamp C3
The M5Stamp C3 and 480x320 display can be touch-operated on a large screen.
blog:2022.02.09
Operate ILI9488 with M5Stamp C3
https://macsbug.wordpress.com/2022/02/09/operate-ili9488-with-m5stamp-c3/
@lwtsde said in M5Paper STL Files available?:
M5Paper
Hello!
It depends on the accuracy of the 3D Printer.
M5 Paper requires high accuracy.
You need a high-precision printer.
The accuracy of the printer for amateurs is about 0.4mm width.
I think it is impossible because the accuracy is low.
Hello @dave17
How to run LVGL on M5Stack
https://community.m5stack.com/topic/3613/how-to-run-lvgl-on-m5stack
LVGL 8 demo with M5Stack , M5Stamp C3
https://community.m5stack.com/topic/4161/lvgl-8-demo-with-m5stack-m5stamp-c3
Hello@F3l1x
In the example below I am using lcd-image-converter.
lcd-image-converter
https://sourceforge.net/projects/lcd-image-converter/
Select 8bit or 16bit for Block size and create xxx.c.
Use M5.Lcd.pushImage(x,y,imgWidth,imgHeight,(unit16_t *) xxx);
M5Stack Community :
M5StickC Nixie tube Clock ( 2019.06.06 )
https://forum.m5stack.com/topic/1087/m5stickc-nixie-tube-clock
Original text:
M5StickC Nixie tube Clock
https://macsbug.wordpress.com/2019/06/06/m5stickc-nixie-tube-clock/
UIFlow:( jpg )
@world101 implemented a Nixie tube clock in the uiFlow IDE for M5 Stick C-Plus devices.
https://github.com/bstein2379/M5StickC-Plus-Nixie-clock
Reference material:
M5STICKC's DISPLAY analysis part 3 drawn know -how
https://lang-ship.com/blog/work/m5stickc-display3-m5lcd/
Lang-ship's image code conversion site :
https://lang-ship.com/tools/image2data/
Hello@MoodyGeorge
An example of adding M5.lcd.drawJpg to M5StickC.
anoken/m5stickc_arduino.ino
https://gist.github.com/anoken/8b0ce255e9aef9d1a7f4d46272cedcaa
reference
https://twitter.com/nnn112358/status/1218447646009937920