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/
