226【Complete Course Design】Design of Breath Detection System Based on 51 Single Chip Computer

[Resource Download] The download address is as follows:
https://docs.qq.com/doc/DTlRSd01BZXNpRUxl

51 Breath Detection System Design-Microphone-Bluetooth

This design is composed of STC89C52 single chip microcomputer circuit + microphone sound sensor module circuit + Bluetooth module circuit + power supply circuit.

1. The microphone module detects breathing, and uploads the number of breaths per minute to the mobile APP in real time via Bluetooth.