Top 8 Longer Range Ultrasonic Sensor Arduino

Excelity HC-SR04 Ultrasonic Moudle is to measure the distance of object by 40KHz ultrasonic sound wave. This moulde provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm. It is great for the project that need distance measurement, such as Distometer,intelligent robot navigation system,etc.

Module main technical parameters:
-Working Voltage : 5V(DC)
-Static current: Less than 2mA
-Output signal: Electric frequency signal, high level 5V, low level 0V
-Sensor angle: Not more than 15 degrees
-Detection distance: 2cm-450cm.
-High precision: Up to 0.3cm
-Input trigger signal: 10us TTL impulse
-Echo signal : output TTL PWL signal

Pin definition:
-VCC: connect to 5V DC
-Trig(T): control pin, connect to a standard I/O port
-Echo(R):receiving end, connect to a standard I/O port
-GND: Connect to Ground

Notes:
-1. The module should be inserted in the circuit before been powered to avoid producing high level of misoperation; if producted, power it again.
-2. Before connect to VCC terminal, the GND terminal should be connected the module first,otherwise,it will affect the normal work of the module.

Module Working Principle:
-1. Pull the Trig pin to high level for more than 10us impulse, the module start ranging.
-2. The module automatically sends eight 40KHz square wave to detect whether a signal is returned.
-3. Finished ranging, If you find an object in front, Echo pin will be high level, and based on the different distance, it will take the different duration of high level.
-4. Calculated the distance, the distance = (high level time * sound velocity (340M/S) / 2.

Package included:
-3pcs HC-SR04 Moulde
-3pcs Mounting Bracket

Length of Shaft: 20mm/ 0.79in
5 pins

Package Includes:
5× Rotary Encoder Code Switch Digital Potentiometer
5× Knob Cap

There are 4 pins out of the module: VCC , Trig, Echo, GND. So it’s a very easy interface for controller to use it ranging. 
The all process is: pull the Trig pin to high level for more than 10us impulse, the module start ranging; 
Finish ranging, If you find an object in front, Echo pin will be high level, and based on the different distance, it will take the different duration of high level. 
So we can calculated the distance easily: Distance = ((Duration of high level)*(Sonic :340m/s))/2

Longruner 5 x HC-SR04 Ultrasonic Sensor, for ArduinoIDE Distance Sensor Robot XBee ZigBee with Ultrasonic Transmitter and Receiver Module The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package. From 2cm to 500 cm or 1” to 13 feet. It operation is not affected by sunlight or black material like Sharp rangefinders are (although acoustically soft materials like cloth can be difficult to detect). It comes complete with ultrasonic transmitter and receiver module. Features: Power Supply: +5V DC Quiescent Current: Working Current: 15mA Effectual Angle: Ranging Distance: 2cm – 500 cm/1″ – 13ft Resolution: 0.3 cm Measuring Angle: 30 degree Trigger Input Pulse width: 10uS Dimension: 45mm x 20mm x 15mm Pins VCC: +5VDC Trig: Trigger (INPUT) Echo: Echo (OUTPUT) GND: GND Package includes: 5* HC-SR04 Ultrasonic Distance Sensor 1*HC-SR04 Bracket 1*Male to Femal jump wires 20pin 10*cable ties for fixing HC-SR04(as a gift) NOTE: If the HC-SR04 does not receive an echo then the output never goes low. Devantec and Parallax sensors time out after 36ms and I think 28ms respectively. If you use Pulsin as above then with no return echo the program will hang for 1 second which is the default timeout for Pulsin. You need to use the timeout parameter. If you have any question, please be free to contact us, we will try our best to help you. Service Email: [email protected]

Ultrasonic Sensors Integrated Transceiver Waterproof Diameter 16MM

Description:
Construction:waterproof
Using method:dual using
Nominal Frequency：40±0.5KHz
Sensitivity：-75ubar
SPL：≥108(10V/30cm/sine wave)
Directivity：45deg
Capacitance：1800±30%@1KHz
Detectable range：0.3….3.5M
Max. input Voltage：140Vp-p
Long-term Storage temperature：-25℃~80℃
Long-term working temperature：-20℃~80℃
Housing material：Al
Package Includes:
4 * Ultrasonic Sensors Integrated Transceiver Waterproof

WayinTop: We aim to make your work Easier & Funnier!

Specification of Rotary Encoder Module:

Model: KY-040
Working Voltage: 5V
Material: PCB + Brass
Weight: 10g
Size: 32 x 19 x 30mm

The pin outs for this rotary encoder are identified in the below.

CLK: Encoder Pin A
DT: Encoder Pin B
SW: No Pushbutton Switch
+: 5V Supply
GND: Encoder Pin C

Pin connected to Arduino:

CLK = [pin 3]
DT = [pin 4]
Button = [pin 5]
+ = [Pin 5V]
GND = [pin GND]

Pin connected to Raspberry Pi:

CLK = GPIO16 [pin 36]
DT = GPIO15 [pin 10]
SW = GPIO14 [pin 8]
+ = 3.3V [pin 1]
GND = ground [pin 6]

Package Include:
5 x KY-040 360 Degree Rotary Encoder Module
5 x Encoder Push Button Black

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