This is another example of Expressif Non-OS-SDK 3.0 programming for $3 wireless DHT (Temperature/Humidity) sensor from Ali Express https://www.aliexpress.com/item ...

This module is low on parts count so they should be easily sourced. The heart of this is the ESP-01s. Note this has to be the 01s variant because the other, older module requires pull-up resistors for ...