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Features:
- Dual channel stereo output 3 w 3 w power Class D
- Works with 2.5V-5v power supply
- High amplification efficiency 85%
- can directly drive 4 Ω/8 Ω small speakers
- Good sound quality & noise suppression
- Unique without LC filter class D digital power board
- Can use computer USB power supply directly
- Small Size, can easily fit in a variety of products
- Input audio should be via sheilded wire for best performance.
- Use proper filtered power supply with good filter capacitors.
- Take care not to short speaker wires else IC will get damaged.
- Make sure power supply never execeds 5.5V else IC will get damaged. Use regulated power supply.
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Inputs
- GND – This is where you connect the low side of the voltage you are measuring. Caution! : This is the same electrical point as your Arduino ground.
- VCC: The is where you connect the high side of the voltage you are measuring
Outputs
- S: This connects to your Arduino analog input.
- – (or minus): This connects to your Arduino ground.
- : This is not connected. It does absolutely nothing.
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1, AO, analog output, real-time output voltage signal of the microphone 2, DO, when the sound intensity reaches a certain threshold, the output signal [high and low threshold - Sensitivity adjustment by potentiometer] Module features: 1, there is mounting screw holes of 3mm. 2, using the 5v DC power supply. 3, the analog output. 4, there is a threshold level output flip. 5, High sensitivity microphone, high sensitivity. 6, a power indicator light. 7, the comparator output indicator lamp.
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The rotary encoder is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in. It’s a great device for stepper and servo motor control. You could also use it to control devices like digital potentiometers. A rotary encoder has a fixed number of positions per revolution. These positions are easily felt as small “clicks” you turn the encoder.
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DescriptionThis is a speed sensor, the major goal is to check the rate of motor.It was widely used in motor speed detection, pulse count, the position limit, etc.Features:-Groove type optical coupling sensor-The output state light, lamp output level, the output low level light.-Covered, output high level;Without sunscreen, the output low level.-The comparator output signal is clean, good waveform, driving ability is strong, for more than 15 ma.-It has a fixed bolt hole, convenient installation.
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'- Board TP4056 lithium charge management chip - Mini USB head can link directly to the computer USB port charging - The charging board can also power supply from (IN and IN-) pin - Setting aside the the TEMP pin interface can be used as lithium battery temperature detection - Input voltage: 4V~8V - Maximum output charging current: 1000mA - D1 indicator lights on when in charging, D2 lights on when charging completed - English Manual/Spec: Yes - Great for DIY project
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The BMP180 Breakout is a barometric pressure sensor with an I2C (“Wire”) interface. Barometric pressure sensors measure the absolute pressure of the air around them. This pressure varies with both the weather and altitude. Depending on how you interpret the data, you can monitor changes in the weather, measure altitude, or any other tasks that require an accurate pressure reading.