ESP32-CAM Doorbell

This is version 1.2, so you can image it's a bit rough.

I'm making a low cost doorbell, because I couldn't find any online as example. Any thoughts would be nice.
At the moment it's quitte rough, but it's 'working'.
When pressing the bell though The camera crashes and the feed only restores about a minute later.
I use a 0.25w speaker from a wireless 3.2v doorbell. like the 'toy speakers' from ebay.
esp32-cam AI thinker
2n2222 npn with a 1k resistor for amplifications of the PWM I found on youtube.

The printed one on picture with the circuit is a first version.

https://github.com/moxl-420/ESP32cam-doorbell
For full info