View source for Component: Ultrasonic (HCSR04) (Audio)

{| style="width:50%"
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| width="20%" style="color:gray;" | Author
| Matrix TSL
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| width="20%" style="color:gray;" | Version
| 1.0
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| width="20%" style="color:gray;" | Category
| Audio
|}


==Ultrasonic (HCSR04) component==
This  board  has  both  an  ultrasonic  transmitter  and receiver.  When the Trig pin is set high for 10uS, the transmitter sends eight 40KHz pulses.  The Echo pin goes high about 2ms later.  The duration of the Echo pin is measure when it goes high, and a distance is then calculated based on the high duration. The distance of objects in a range of around 3cm to 2.75m can be determined. 

==Component Source Code==

Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_temp/Ultrasonic_HC_SR04.fcfx FC_Comp_Source_temp/Ultrasonic_HC_SR04.fcfx]

Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_temp/Ultrasonic_HC_SR04.fcfx FC_Comp_Source_temp/Ultrasonic_HC_SR04.fcfx]

==Detailed description==























''No detailed description exists yet for this component''

==Examples==
























{{Fcfile|HC-SR04 Distance Sensor Demo.fcfx|HC-SR04 Distance Sensor Demo.fcfx}}







==Macro reference==

===GetDistance===
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetDistance'''
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| colspan="2" | Sends a pulse and processes the echo. Returns a object distance in cm&nbsp;
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|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




==Property reference==

{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
|-
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties''' 
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|-
| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
| width="90%" | OutputTrig Pin
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| colspan="2" | Pin used for controlling the output pulse&nbsp;
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| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
| width="90%" | Input Echo Pin
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| colspan="2" | ADC channel used to monitor the echo&nbsp;
|}