I got myself an ESP32 with an integrated e-ink display. This little project shows when the next bus to the city leaves, and the current time. I get the live bus data from Skyss through the Entur integration in Home Assistant. Might have to get a few more of these to tinker with.
Did you follow a guide?
In the beginning I struggled with getting the display to work, until I found this forum post https://community.home-assistant.io/t/using-ttgo-epaper-display-with-esphome/168877/27 Aside from that, I mostly used the ESPHome website that hendrik in the other comment mentioned. It took a lot of trial and error, since I didn't know any YAML beforehand.