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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

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Ultrasonic Transducer Waterproof Distance Measuring Sensor Module
  • Ultrasonic Transducer Waterproof Distance Measuring Sensor Module
  • Ultrasonic Transducer Waterproof Distance Measuring Sensor Module
  • Ultrasonic Transducer Waterproof Distance Measuring Sensor Module
  • Ultrasonic Transducer Waterproof Distance Measuring Sensor Module

Ultrasonic Transducer Waterproof Distance Measuring Sensor Module

Specification:
Electrical parameters: JSN-SR04T 
Operating voltage: DC 5V 
Quiescent current: 5mA 
Total current work: 30mA 
Acoustic emission frequency: 40khz 
Farthest distance: 4.5m 
Blind: 25cm 
BDT 950
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In-Stock

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Description
Specification:
Electrical parameters: JSN-SR04T 
Operating voltage: DC 5V 
Quiescent current: 5mA 
Total current work: 30mA 
Acoustic emission frequency: 40khz 
Farthest distance: 4.5m 
Blind: 25cm 
Wiring: + 5V (positive power supply) 
Trig (control side) RX 
Echo (the receiver) TX 
GND (negative) 
Module size: 41mm * 28.5mm 
Resolution: about 0.5cm 
Angle: less than 50 degrees 
Working temperature: -10 ~ 70 ℃ 
Storage temperature: -20 ~ 80 ℃

Product Features: 
1, small size, easy to use; 
2, low voltage, low power consumption; 
3, high accuracy; 
4, strong anti-jamming; 
5, integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions.
Application: 
1, Horizontal distance; 
2, obstacle avoidance, automatic control; 
3, the object approaches, there is a perceived 
4, traffic control; 
5, security, industrial control; 
6, artificial intelligence, and research

The basic working principle:
(1) using IO port TRIG trigger location, to the high level signal of at least 10us;
(2) module automatically sends 8 40KHz Fang Bo, automatic detecting whether a signal return;
(3) a signal return, a high level is output through the IO port ECHO, the time duration of the high level is 
ultrasonic from launch to return. The test distance = (high level time * speed of sound (340M/S)) /2;
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