Help for e-paper display with ESP32

[RoNard38]

Hello,
I recently purchased a 4.2-inch WaveShare e-ink display with 4 levels of grey (here is the link: https://www.amazon.fr/Module-Resolution ... B074NR1SW2 )
I’m trying to display something using GxEPD2 but nothing is showing up. Here is my code:

voicModule Copie.txt

my code

(579 Bytes) Downloaded 7 times

. Could someone please help me (I’ve checked all the connections).
Thanks

[lbernstone]

Did you try with GxEPD2_420c_GDEY0420F51 ?