王达业

electronic christmas tree

Overview

The sound unit cannot use a buzzer, otherwise it will be very noisy. A speaker must be used, as shown in the picture:

the silk screen is facing upward, and the two boards are in the same order.
As shown in the picture,

the music chip can be changed by yourself. The model number is given below.

Finally, I’ll attach a few close-ups;

you’ve all seen it here, give it a thumbs up and go away.
PS, don’t worry about the unconnected wires in the pcb, just ignore generating Gerber.

Design Files

Related Devices

Devices	Class	introduce	Datasheet
2N3904	Discrete semiconductor;triode	Rated power: 625mW Collector current Ic: 200mA Collector-emitter breakdown voltage Vce: 40V Transistor type: NPN	Download
K2-1102DP-Z4SW-04	accessories;Light touch switch	Circuit structure: SPST-NO Contact rated current: 50mA @ 12VDC Button head type: Standard Button action direction: Top Actuated Plug-in button tact switch 6619	Download

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Update:2024-11-22 13:30:49

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