Just want to share a PCB I made to add WLAN-support for the Badger2040 (works also with the Tufty):
The Badger communicates with the ESP-01S using UART (AT-commands with the original firmware). Ideal to update the time of the Badger or to send measurement-data to a second device.
You can also add an RTC (PCF8523). This is of course nothing you will hang around your neck, but for stationary projects this is ideal.
In the project-repo GitHub - bablokb/pcb-badger2040-wlan: Small PCB for an ESP-01S and PCF8523-RTC you will find the design-files and a ready-to-upload zip-file for production. I got five pcbs for less than 7 Euro. And delivery to Germany from China is usually faster than from UK (which is definitely not Pimoroni’s fault, they send out very fast).