Cover for selfmade buzzer.

d1mini case: [https://www.printables.com/model/327559](https://www.printables.com/model/327559)

parts:

• pcb: D1mini prototype board [https://de.aliexpress.com/item/1005008599632550.html](https://de.aliexpress.com/item/1005008599632550.html)
• transsistor BC547: [https://de.aliexpress.com/item/1005007142654566.html](https://de.aliexpress.com/item/1005007142654566.html)
• passiv 5V buzzer: [https://de.aliexpress.com/item/1005007714208698.html](https://de.aliexpress.com/item/1005007714208698.html)
• resistor 10 Ohm

software: esp-easy [https://blog.berrybase.de/esp-easy-installation-und-konfiguration/](https://blog.berrybase.de/esp-easy-installation-und-konfiguration/)