Hi @reso ,
Sorry my previous post was very wrong I believe, I think you should try this instead:
Line 1305 of gauge_bg_bar.c
// Change
const lv_img_dsc_t guage_bg_bar = {
// to
const PROGMEM lv_img_dsc_t guage_bg_bar = {
And add #include <avr/pgmspace.h> to the top of the file.
Leave the rest of your code as is…
Please can you try that and let me know if it compiles?
Kind Regards,
Pete.