Arduino sound sensor module 30dB-130dB Volume detector Noise monitoring Noise detector 5V-12V TTL UART
1. Description:
It is a module for detecting ambient noise. The main function of this module is to detect ambient noise and send data via a serial TTL interface, which facilitates and more convenient docking. If the module is connected to the power supply, the data will be actively sent back without sending a read command.
2. Function:
1> .Can measure decibels
2> Visual display of the UART output value
3>. Support for easy control of AT commands
4>. Support for a wide range of test values
5> .Support reading instructions without AT
6> .Its data can be calibrated
3. Description:
1>. Product Name: Ambient noise detection module
2>. Operating voltage: DC 5V ~ 12V
3> Operating current: 19.70 mA
4>. Communication method: Serial TTL-3.3V
5>. Frequency range: 31.5KHz ~ 8KHz
6>. Measuring range: 30dB ~ 130dB
7>. Resolution: 0.1 dB
8>. Calibration method: 94 dB or 114 dB
9> Operating temperature: -20 ℃ ~ 60 ℃
10> Working humidity: 5% ~ 95% RH
11> .Size: 68 * 40.5 * 19.5mm
4. Serial port parameters and protocols:
1> .Serial parameters: 9600/19200/38400/57600/115200, None, 1 bit
2> .Serial data packet protocol:
1.1> .Data packet format: Start character + command + data + check value
1.2> .Initial character: BBAA, 2 bytes of data (0xBB, 0xAA)
1.3> .Command: length 1 byte.01, means the return of the decibel data command
1.4> .Data: 2 bytes in length, decibel data is placed in this data segment
1.5>. Check value: 1 byte length, arithmetic, and check of initial character, command, and data, except for overflow values exceeding 256.
3> .Data order in decibels:
1.1> .For example: BB AA 01 7F 02 E7
1.2> .Initial character: BB AA, which indicates the beginning of the frame.
1.3> .Command: 01, which means that this frame returns decibel value data.
1.4> .Data: 7F 02, which means that the detected decibel value is 63.9 dB. First comes the low byte, then the high byte, and each unit is 0.1 dB.
1.5>. Control value: E7, which is the arithmetic and control value of BB AA 01 7F 02.
1.6>. This frame returns every 300 ms after the module is turned on.
5. Package:
1> .1pc ambient noise detection module
