Make the connections are According to the circuit diagram and power the setup with a three.7V Lipo battery. When powered, the Capacitor C1 charges to its whole capability. Transistor T2 drives the speaker. Pin three of UM66 IC is connected to The bottom of transistor T2. Considering that the output https://menssneakers99764.wizzardsblog.com/20196905/getting-my-wireless-ring-video-doorbell-to-work