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Arduino Uno R3

Arduino UNO in Bangladesh The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller.

Price BDT 399
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YF-S201 Hall Effect Water Flow Meter / Sensor
  • YF-S201 Hall Effect Water Flow Meter / Sensor

YF-S201 Hall Effect Water Flow Meter / Sensor

Features:
  • Model: YF-S201
  • Sensor Type: Hall effect
  • Working Voltage: 5 to 18V DC (min tested working voltage 4.5V)
  • Max current draw: 15mA @ 5V
  • Output Type: 5V TTL
  • Working Flow Rate: 1 to 30 Liters/Minute
  • Working Temperature range: -25 to +80℃
  • Working Humidity Range: 35%-80% RH
  • Accuracy: ±10%
BDT 520
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Description
YF-S201 Hall Effect Water Flow Meter / Sensor
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!
 
We have as example Arduino sketch that can be used to quickly test the sensor, it will 
calculate the approximate flow of water in liters/hour.
 
The pulse signal is a simple square wave so its quite easy to log and convert into liters per 
minute using the following formula.
 
Pulse frequency (Hz) / 7.5 = flow rate in L/min.
 
Features:
  • Model: YF-S201
  • Sensor Type: Hall effect
  • Working Voltage: 5 to 18V DC (min tested working voltage 4.5V)
  • Max current draw: 15mA @ 5V
  • Output Type: 5V TTL
  • Working Flow Rate: 1 to 30 Liters/Minute
  • Working Temperature range: -25 to +80℃
  • Working Humidity Range: 35%-80% RH
  • Accuracy: ±10%
  • Maximum water pressure: 2.0 MPa
  • Output duty cycle: 50% +-10%
  • Output rise time: 0.04us
  • Output fall time: 0.18us
  • Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)
  • Pulses per Liter: 450
  • Durability: minimum 300,000 cycles
  • 1/2" nominal pipe connections, 0.78" outer diameter, 1/2" of thread
  • Size: 2.5" x 1.4" x 1.4"

Connection details:
  • Red wire : +5V
  • Black wire : GND
  • Yellow wire : PWM output.

Product Details
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