Beeper Module - Qianglongsheng Electronic Technology MCD-DEMO-II Manual

DEMO-II Copyright of Qianlongsheng Electronics Technology (Shenzhen) Co., Ltd.

4.16 Beeper Module

This module mainly shows how to use MCU to control the beeper, as shown in Figure 4-28.
The main module of the following components:
1) Beeper
2) Jumper wire J17
Descriptions about this module are as the following:
1) The beeper is connected to the RC2 pin of MCU through a jumper wire.
2) When this module is in use please make sure the jumper wire is connected while when it is not in use please make
sure that the jumper wire is disconnected.
3) When the jumper wire J17 is on connected status, we may hear a weak beeping even if there's no chip on the board,
which is a normal phenomenon.
4) The CD-ROM includes programs of beeping for reference.
This module schematic shown in Figure 4-29.
J17
RC 2
Figure 4-28 Beeper module
R39
10K
R40
10k
Figure 4-29 Schematic of beeper
Page 28 of 33
VC C
U10
BUZZER
Q8
8050