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This sensor sits in line with your water line and contains a pinwheel sensor to measure how much liquid has moved through it. There's an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry. The sensor comes with three wires: red (5-24VDC power), black (ground) and yellow (Hall effect pulse output). By counting the pulses from the output of the sensor, you can easily calculate water flow. Each pulse is approximately 2.25 milliliters. Note this isn't a precision sensor, and the pulse rate does vary a bit depending on the flow rate, fluid pressure and sensor orientation. It will need careful calibration if better than 10% precision is required. However, its great for basic measurement tasks!
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L298N driver module, using ST's L298N chip can directly drive two 3-30V DC motor, and provides a 5V output interface can 5V single-chip circuitry to supply, support 3.3VMCU control, you can easily control the DC motor speed and direction, you can also control the 2-phase stepper motor, smart car is essential.
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The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI™-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as 1024°C, and exhibits thermocouple accuracy of 8LSBs for temperatures ranging from 0°C to 700°C. The MAX6675 is available in a small, 8-pin SO package.
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This module is based on the TDA7266 dual bridge audio amplifier chip, which features an output power of up to 7 W for each channel. It is suitable for use with 5 W to 15 W speakers. Specifications
- On-board TDA7266 stereo audio amplifier chip
- Output: dual-channel 7W 7W
- On-board 5.08 mm terminal blocks for the left and right audio channels
- On-board potentiometer for volume adjustment
- DC power jack
- Operating Voltage Range: 3 V to 18 V
- Board Size: 45 x 33 mm
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General Description The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperaturecompensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SMD package.
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ADC Bit rate: 16 Bit. Interface Type: I2C. Channels: 4 Channel AN0 AN1 AN2 AN3 or 2 differential inputs. Input voltage: 2.0-5.5v. Channel input voltage :0-VDD. Continuous Mode: Only 150μA. Single-Shot Mode: Auto Shut-Down. PROGRAMMABLE DATA RATE:8sps-860sps. Input range programmed control, 7 types input ranges: -0.256V ~ 0.256V, -0.512V ~ 0.512V, -1.024V ~ 1.024V, -2.048V ~ 2.048V, -4.096V ~ 4.096 V, -6.144V ~ 6.144V. I2C 7-bit addresses between 0x48-0x4B. Size:18mm*28mm. Applications -Portable instrumentation. -Consumer goods. -Battery monitoring. -Temperature measurement. -Factory automation and process controls.
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The TB6612FNG motor driver can control up to two DC motors at a constant current of 1.2A (3.2A peak). Two input signals (IN1 and IN2) can be used to control the motor in one of four function modes - CW, CCW, short-brake, and stop. Features:
- Power supply voltage: VM=15V max, VCC=2.7-5.5V
- Output current: Iout=1.2A(average) / 3.2A (peak)
- Standby control to save power
- CW/CCW/short brake/stop motor control modes
- Built-in thermal shutdown circuit and low voltage detecting circuit
- All pins of the TB6612FNG broken out to 0.1" spaced pins
- Filtering capacitors on both supply lines