MAX4466:
Specifications:
- Supply Voltage: 2.7v-5.5v @ 3mA current
- Output: 2Vpp on 1.25V bias
- Frequency Response: 20Hz - 20KHz
- Programmable Attack and Release Ratio
- Automatic gain, selectable max from 40dB, 50dB or 60dB
- Low Input-Referred Noise Density of 30nV/
- Low THD: 0.04% (typ)
KY-037:
Size:32mm*17mm*8mm(length*width*height)
Main chip:LM393, Electret condenser microphone
Working voltage: DC 4-6V
Signal output indication
Single channel signal output
The output effective signal is low level
When there is sound, outputs low level and the signal light
Can be used for Acoustic control light , give sound and light alarm working with Photosensitive sensor ,and sound control, sound detect
Circuit board output switch quantity
Note: The Maximum induction distance is 0.5
Sound Sensor Black:
The Sound sensor module is a simple microphone. Based on the power amplifier LM393 and the electret microphone, it can be used to detect whether there is any sound that beyond the threshold. The threshold can be adjusted by the on-board potentiometer.
Adjust the on-board potentiometer to adjust the sensitivity. The module output HIHG/LOW when the voice is Lower/higher than the threshold set by the potentiometer.
Please note that this sensor can only outputs if there is sound that beyond the threshold, but not the loudness and frequency.
Application Idea
Sound controlled Lamp;
Sound monitoring
On-board LED indicator
Threshold adjustable
Working voltage: 3.3V-5V
Sound Sensor Blue:
1. Can detect the sound intensity of the surrounding environment, use Note: This sensor can only identify the presence of sound (according to the principle of vibration) can not recognize the size of the sound or a specific frequency of sound
2. Adjustable sensitivity (blue digital potentiometer adjustment)
3. Operating voltage 3.3V-5V
5. Output form Digital switch output (0 and 1 high and low level)
6. With fixed bolt holes, easy to install
7. Small board PCB size: 3.2cm * 1.7cm
Two module wiring instructions
1.VCC external 3.3V-5V voltage (can be directly connected with the 5v microcontroller and 3.3v single-chip)
2.GND external GND
3.OUT small board switch output interface (0 and 1)
Three instructions
1. Sound module is the most sensitive to the sound intensity of the environment, generally used to detect the sound intensity of the surrounding environment.
2. When the ambient sound intensity reaches the set threshold, the OUT output high level, when the external ambient sound intensity exceeds the set threshold, the module OUT output low;
3. Small board digital output OUT can be directly connected with the microcontroller, through the microcontroller to detect high and low levels, which to detect the sound of the environment;
MAX9814:
Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled andtested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use theMaxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent powersupply noise rejection, so this amplifier sounds really good and isn't nearly as noisy or scratchy as othermic amp breakouts we've tried!This breakout is best used for projects such as voice changers, audio recordingmpling, and audio-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You canset the gain from 25x to 125x. That's down to be about 200mVpp (for normal speaking volume about 6"away) which is good for attaching to something that expects 'line level' input without clipping, or up toabout 1Vpp, ideal for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds getsloud, the output can go up to 5Vpp!
Using it is simple:
Connect GND to ground, VCC to 2.4-5VDC.For the best performance, use the "quietest" supply available (on an for Arduino, this would be the 3.3V supply).The audio waveform will come out of the OUT pin. The output
KY-038:
Adopt LM393 main chip
Electric condenser microphone
Features Single channel signal output
Low level output signal used for sound control light
Great module for sound alarm system
Working voltage: For DC 4-6V
Interface definition:
AO: analog output sensor
GND: ground
VCC: Power supply input range: 3V-24V.
DO: Digital Output (comparator output)
Two red LED indication: POWER and SENSOR. POWER: Power is off. SENSOR:
When the microphone senses sound reaches a certain value, this LED light.
Package Included
1 Pcs Electret Microphone Module
