Component: Ultrasonic (HCSR04) (Audio): Difference between revisions
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Revision as of 14:36, 13 July 2026
| Author | Matrix TSL |
| Version | 9.0 |
| Category | Audio |
Ultrasonic 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.
Version information
Library Version, Component Version, Date, Author, Info 9, 9.0, 30-07-24, MW, Fixed a (499) undefined symbol error
Detailed description
No detailed description exists yet for this component
Examples
HC-SR04 Distance Sensor Demo.fcfx
Macro reference
GetDistance
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GetDistance |
| Sends a pulse and processes the echo. Returns a object distance in cm | |
 - UINT
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Return |
Property reference
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Properties |
|
Type |
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Use Timer Interrupt |
| For 8bit PICs resuls the timer interrupt is recomened for increased accuracy | |
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OutputTrig Pin |
| Pin used for controlling the output pulse | |
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Input Echo Pin |
| ADC channel used to monitor the echo | |
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Rollover Time |
| Maximim rollover time in seconds. Make sure its the lowest value posisble without going below 0.018 0.018 = 18ms which equates to a distance of 310 cm | |
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Timer Settings |
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Timer |
| Timer Peripheral to use to monitor the passage of time. | |
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Bit Depth |
| Number of bits in the timer peripheral. 8-bit timers can count from 0-255 before overflowing. 16-bit timers can count from 0 to 65535 before overflowing. | |
Component Source Code
Please click here to download the component source project: FC_Comp_Source_Ultrasonic_HC_SR04.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_Ultrasonic_HC_SR04.fcfx