Encoders
Water Flow Sensor 1-30L / min Transparent Color
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Water flow sensor  0.5-5L / min  Black color

Frequency: F = 73 * Q (L / Min) error: ± 2%

Voltage: 3.5-24VDC, current can not exceed 10mA, a liter of water flow after 4380 output pulse

Anemometer / Wind Speed Sensor (Output 4-20mA / 0-5V )
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Body Material: Metal Alloy
The core sensor types: honeywell sensor 
Signal output way: pulse current: 4-20 mA /0-5V
Sensor styles: three cups 
Start wind speed: 0.2 m/s 
Effective wind speed measuring range: 0 to 30 m/s 
System error: plus or minus 3 
Connection mode: three wire system 
Working temperature: - 40  ~ 80 
Power supply: DC12-24 V

Technical parameters:

Body Material: Metal Alloy
The core sensor types: honeywell sensor 
Signal output way: pulse current: 4-20 mA /0-5V
Sensor styles: three cups 
Start wind speed: 0.2 m/s 
Effective wind speed measuring range: 0 to 30 m/s 
System error: plus or minus 3 
Transmission distance: more than 1 km 
Transmission medium: cable transmission 
Connection mode: three wire system 
Working temperature: - 40  ~ 80 
Power supply: DC12-24 V
Max power consumption: 4 W
Size: see the size chart 
Weight:  1 kg 
Cable Length:3m

 

Dimensions (unit:mm):

 

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Dual Speed Encoder Module for speed detection
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Product Description

 

Widely used in motor speed detection, pulse-counting, any position, possesses 2 road testing. 
Module unique : 
1.trough-like optocoupler use sensor 
2.tank width 5mm . 
3.have export status indicator , output level lamp expirate , output low level lamp bright . 
4.have sunling , output low level; none sunling , output high level . 
5.comparator output , signal clean , waveform good , riving capacity strong , more than 15ma. 
6.working voltage 3.3v-5v 
7.output : form digital switch output ( 0 and 1 ) 
8.with fitted bolt hole , convenient installation 
9.small PCB measurement: 3.2cm 1.7cm x 
10.use LM393 wide voltage comparator 
Module how to use : 
1. module tank in none shade from , receiver tube breakover , module do output low level , when sunling , do output high level . 
2. module can do with relay connected , composition of limit switch etc function , with active buzzer module connected , composition alarm . 
Invoice : 
2 road velocimetry sensors module , with two trough-like optocoupler , 2 sensors small PCB board , 8 20cm DuPont line strip 
Included 
1 x 2 Road Velocimetry Sensor Module

IR Photoelectric Encoder Sensor Module With Amplifier
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Module Features:
1, the use of imported groove coupler sensor
2, the groove width of 10mm.
3, the output state indicator lamp output high, output low lights.
4, block, output high; unobstructed, output low.
5, the comparator output signal clean, good waveform, driving ability, more than 15mA.

 

Product Description:

Beam photoelectric sensors, infrared shooting count sensor, the sensor module   

 

 

A, Long Size: 32mm x width 11mm X 20mm high
B, the main chip: LM393, on the radio-infrared head
C, the working voltage: DC 5 Volt
D, characteristics:
1, with the directions of the signal output.
2, single-channel signal output.
3, the output valid signal is low.
4, the sensitivity is not adjustable.
5, the workpiece can be used for counting, motor speed. . . .
6, the output switch board!
 
Module Features:
1, the use of imported groove coupler sensor
2, the groove width of 10mm.
3, the output state indicator lamp output high, output low lights.
4, block, output high; unobstructed, output low.
5, the comparator output signal clean, good waveform, driving ability, more than 15mA.
6, the working voltage of 3.3V-5V
7, the output format: digital switching outputs (0 and 1)
8, a fixed bolt holes for easy installation
9, small plates PCB size: 2.3cmx2cm
10, using a wide voltage LM393 comparator
Module for use:
1 module slot unobstructed when the receiver turns on, the module DO output low, while blocking, DO output high;
2 can be connected to the relay module DO composition limit switch functions, the buzzer may be connected to the active module, consisting of alarms.

2 Channel Optical Encoder Speed Sensor Module For 2WD Smart Car (Tachometer)
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Description: 

Slot Type on the radio using optical, non-transparent objects can be triggered by Slot Type, output 5V TTL level. Schmitt trigger pulse to shake, can be used to measure car speed, distance measurement applications!
Four pin defined as +5 GND OUT1 OUT2,  OUT1 OUT2 is level output! Direct access to the microcontroller IO port, each way with a LED indicating the output status

Package Included:

1 X 2WD Speed Module

G3/4 1-60L/min Water / Fluid Flow meter encoder based
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Flow range:1-60L/min±1%
Minimum rated working voltage:DC4.5 5V-24V
Maximum current:15 mA(DC 5V)
Working voltage range:DC 5~18 V
Load capacity:≤10 mA(DC 5V)
Operating Temp:≤80℃,Operating humidity:35%~90%RH
Allow compression:Water pressure 1.75 Mpa below
Output pulse duty cycle of 50 ±10%
Output rise time 0.04μS
Output fall time 0.18μS
Storage Temperature:-25~+80℃
Storage humidity:25%~95%RH
Output Waveform:Square Wave,output pulse singal.
ROHS Compliant.
Cable length:15cm. - See more at: http://www.ewallpk.com/home/1274-g34-water-flow-sensor-switch-flow-meter-flowmeter-34-1-60l-min-.html#sthash.KQ8pWvO1.dpuf

ROTARY ENCODER MODULE
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Description:

  • These are continuous rotary encoder switch
  • With built in push button switch (push to operate)
  • Can be used for data entry as with modern in car CD players, for volume & on/off control or data selection via LED or LCD display
  • Perfect for use with PIC or ATMEL microcontrollers

Specifications:

  • Rotary Shaft Length: Approx. 12mm
  • Shaft Full Length: Approx. 20mm
  • Shaft Diameter: Approx. 6mm
  • Size (L x W): Approx. 15 x 11mm
  • Position: 20
  • Pulse: 20
  • Output: 2-bit gray code
  • Closed Circuit Resistance: 3 ohms maximums
  • Max. Rating: 10 mA at 5 VDC
  • Operating Temperature Range: -30 to 70 degrees celsius
  • Storage Temperature Range: -40 to 85 degrees celsius
  • Rotational Life: 30000 cycles minimum
  • Switch Life: 20000 cycles minimum
******************
ARDUINO test code:
**********************************************
/////
const int interruptA = 0; / / Interrupt 0 (pin 2)
const int interruptB = 1; / / Interrupt 1 (pin 3)
int CLK = 2; / / PIN2
int DAT = 3; / / PIN3
int BUTTON = 4; / / PIN4
int LED1 = 5; / / PIN5
int LED2 = 6; / / PIN6
int COUNT = 0;
void setup ()
  {
   attachInterrupt (interruptA, RoteStateChanged, FALLING);
  / / AttachInterrupt (interruptB, buttonState, FALLING);
   pinMode (CLK, INPUT);
   digitalWrite (2, HIGH); / / Pull High Restance
   pinMode (DAT, INPUT);
   digitalWrite (3, HIGH); / / Pull High Restance
   pinMode (BUTTON, INPUT);
   digitalWrite (4, HIGH); / / Pull High Restance
   pinMode (LED1, OUTPUT);
   pinMode (LED2, OUTPUT);
    Serial.begin (9600);
  }
void loop ()
{
   if (! (digitalRead (BUTTON)))
     {
      COUNT = 0;
      Serial.println ("STOP COUNT = 0");
      digitalWrite (LED1, LOW);
      digitalWrite (LED2, LOW);
      delay (2000);
     }
      Serial.println (COUNT);
}
/ / -------------------------------------------
void RoteStateChanged () / / When CLK FALLING READ DAT
{
  if (digitalRead (DAT)) / / When DAT = HIGH IS FORWARD
    {
     COUNT;
     digitalWrite (LED1, HIGH);
     digitalWrite (LED2, LOW);
     delay (20);
    }
  else / / When DAT = LOW IS BackRote
    {
     COUNT -;
     digitalWrite (LED2, HIGH);
     digitalWrite (LED1, LOW);
     delay (20);
    }
}