Impressive! Congrats!
How did you manage to integrate ESP32's WiFi antenna into that space? Specially in this image [1], it seems the pins of the esp32 is very close to the SD card...Wouldn't it cause interference?
The small blue chip on the bottom left corner of the side of the board with the SD card is the antenna. We isolated it with ground plane stitching and placed it as far from the SD card as we could in order to avoid interference, and we haven't seen any thus far!
I’m not 100% sure it answers your question about the antenna, but FTA: “Some people are asking themselves where the antenna is. We are using a chip antenna - It is the blue component in the corner!”
