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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.
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EM4100 125kHz RFID Card
It is proximity ID card of 125KHz, EM4100. It has been specially manufactured and packaged to be clean from dust. And you can print any pictures on the PVC blank cards. You can use it with our RDM6300 RFID reader module.
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BDT 15
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YF-S201 Hall Effect Water Flow Meter / Sensor
Features:
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Model: YF-S201
-
Sensor Type: Hall effect
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Working Voltage: 5 to 18V DC (min tested working voltage 4.5V)
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Max current draw: 15mA @ 5V
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Output Type: 5V TTL
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Working Flow Rate: 1 to 30 Liters/Minute
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Working Temperature range: -25 to +80℃
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Working Humidity Range: 35%-80% RH
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Accuracy: ±10%
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Store Pickup Available!
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Shipping Available
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
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Accuracy: ±10%
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Maximum water pressure: 2.0 MPa
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Output duty cycle: 50% +-10%
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Output rise time: 0.04us
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Output fall time: 0.18us
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Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)
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Pulses per Liter: 450
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Durability: minimum 300,000 cycles
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1/2" nominal pipe connections, 0.78" outer diameter, 1/2" of thread -
Size: 2.5" x 1.4" x 1.4"
Connection details:
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Red wire : +5V -
Black wire : GND
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Yellow wire : PWM output.
Documents:
Product Details
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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%