https://gist.github.com/Hermann-SW/e945 ... c679f48b03
ESP01 is sufficient, and powered from the Pico:
Works with Pico C-SDK ...
https://github.com/Hermann-SW/C-SDK_HTT ... esp01-wifi
... as well as with Pico Micropython:
https://www.raspberrypi.org/forums/view ... 6&t=307704
Screen recording of Micropython session: