Text is not displayed when using the wemos oled shield. here is the code I use: ``` oled.begin(); oled.clear(ALL); oled.clear(PAGE); oled.display(); oled.setCursor(0,0); oled.setFontType(1); oled.print("Hello world"); oled.display(); ``` I could fix it by deleting keyword PROGMEM from font files. It seams that PROGMEM makes it crash (https://github.com/sparkfun/SparkFun_Micro_OLED_Arduino_Library/blob/master/src/util/7segment.h#L34 for instance) here is my fork: https://github.com/landru29/SparkFun_Micro_OLED_Arduino_Library