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==Piezo Sounder component==
==Piezo Sounder component==
Drives a simple variable frequency piezo sounder in hardware and simulates the sound in simulation. To actually drive a piezo you may have to amplify the signal from the microcontroller using a transistor or MOSFET.
Drives a simple variable frequency piezo sounder in hardware and simulates the sound in simulation. To actually drive a piezo you may have to amplify the signal from the microcontroller using a transistor or MOSFET.
==Component Source Code==
Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_PiezoSounder.fcfx FC_Comp_Source_PiezoSounder.fcfx]
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_PiezoSounder.fcfx FC_Comp_Source_PiezoSounder.fcfx]


==Detailed description==
==Detailed description==




Line 26: Line 54:




Here is a simple example that will create a siren effect using a piezo sounder.
{{Fcfile|PiezoSiren.fcfx|Piezo Siren}}
Depending on your Piezo Sounder you may need to amplify the signal from the microcontroller using a NPN transistor or N channel FET.




[[File:BuzzerWire.jpg]]


==Downloadable macro reference==


{| 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;" | '''BuzzerBeep'''
|-
| colspan="2" | Switches the buzzer on and off automatically to allow for a series of beeps 
|-
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | OnTime
|-
| colspan="2" | Length of time in ms the buzzer will remain on 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | OffTime
|-
| colspan="2" | Length of time in ms the buzzer will remain off 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | NumberLoops
|-
| colspan="2" | Number of times to repeat the sequence. Range 1-255 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Frequency
|-
| colspan="2" | frequency in hz to output to the Piezo sounder 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''BuzzerOnDelay'''
|-
| colspan="2" | Switch the Buzzer on for a fixed amount of time 
|-
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Time
|-
| colspan="2" | Time in milliseconds to keep the buzzer on 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Frequency
|-
| colspan="2" | Frequency to output in Hz 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''SetAddress'''
|-
| colspan="2" | Allows a different I2C address to be specified allowing one component to control multiple PCA9685 modules. 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Address
|-
| colspan="2" | Range: 0x40 - 0x7F 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''SetClockFrequency'''
|-
| colspan="2" | Sets the current clock frequency, used for things like calculating the PWM frequency and Microsecond duty. 
|-
|-
| width="10%" align="center" | [[File:Fc9-u32-icon.png]] - ULONG
| width="90%" | Clock
|-
| colspan="2" |  
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''GetClockFrequency'''
|-
| colspan="2" | Returns the current clock frequency 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u32-icon.png]] - ULONG
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''WriteMicroseconds'''
|-
| colspan="2" | Sets the PWM output of one of the PCA9685 pins based on the input microseconds, output is not precise 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Output
|-
| colspan="2" | One of the PWM output pins - Range: 0 to 15 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Microseconds
|-
| colspan="2" | The number of Microseconds to turn the PWM output ON 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''SetPWM'''
|-
| colspan="2" | Sets the PWM output of one of the PCA9685 pins 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Output
|-
| colspan="2" | One of the PWM output pins - Range: 0 to 15 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | On
|-
| colspan="2" | At what point in the 4096-part cycle to turn the PWM output ON 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Off
|-
| colspan="2" | At what point in the 4096-part cycle to turn the PWM output OFF 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''Initialise'''
|-
| colspan="2" | Sets up the I2C ready for communications to begin 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''WakeUp'''
|-
| colspan="2" | Wakes the module from Sleep mode 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
Here is a simple example that will create a siren effect using a piezo sounder.
|-
{{Fcfile|PiezoSiren.fcfx|Piezo Siren}}
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
Depending on your Piezo Sounder you may need to amplify the signal from the microcontroller using a NPN transistor or N channel FET.
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SetPin'''
 
|-
 
| colspan="2" | Sets pin without having to deal with on/off tick placement and properly handles a zero value as completely off and 4095 as completely on. 
[[File:BuzzerWire.jpg]]
|-
 
|-
 
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
 
| width="90%" | Output
 
|-
 
| colspan="2" | One of the PWM output pins - Range: 0 to 15 
 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Duty
|-
| colspan="2" | The number of ticks out of 4096 to be active 
|-
| width="10%" align="center" | [[File:]] -
| width="90%" | Invert
|-
| colspan="2" | 0=Normal, 1=Inverted 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''DrawRectangle2D'''
|-
| colspan="2" | Draws a basic 2D rectangle onto the LEDs 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | X1
|-
| colspan="2" |  
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Y1
|-
| colspan="2" |  
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | X2
|-
| colspan="2" |  
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Y2
|-
| colspan="2" |  
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | DrawStyle
|-
| colspan="2" | Sets the draw style - 0=Soild, 1=Edge, 2=Corners 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | R
|-
| colspan="2" |  
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | G
|-
| colspan="2" |  
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | B
|-
| colspan="2" |  
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




{| 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;" | '''ShiftLEDs2D'''
|-
| colspan="2" | Shifts the contents of the display by the number of vertices specified ***Please Note that Wrap mode is currently unavailable*** 
|-
|-
| width="10%" align="center" | [[File:]] -
| width="90%" | X
|-
| colspan="2" | Number of pixels to shift the display -1 to 1 / 0 = No Shift 
|-
| width="10%" align="center" | [[File:]] -
| width="90%" | Y
|-
| colspan="2" | Number of pixels to shift the display -1 to 1 / 0 = No Shift 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | DataMode
|-
| colspan="2" | 0=ResetToZero, 1=WrapAroundDisplay, 2=Smear 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}


==Macro reference==


{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===BuzzerBeep===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetLEDIndex3D'''
| width="90%" class="mtx-class-macrohead" | '''BuzzerBeep'''
|-
|-
| colspan="2" | Gets the index of a single LED in RAM as a 3D array. 
| colspan="2" | Switches the buzzer on and off automatically to allow for a series of beeps 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | X
| width="90%" | OnTime
|-
|-
| colspan="2" | LED Column to change the colour / Range: 0 to (LED Column - 1) 
| colspan="2" | Length of time in ms the buzzer will remain on 
|-
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Y
| width="90%" | OffTime
|-
| colspan="2" | LED Row to change the colour / Range: 0 to (LED Row - 1) 
|-
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Z
|-
| colspan="2" | LED Layer to change the colour / Range: 0 to (LED Layer - 1) 
|-
| 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''
|}
 
 
{| 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;" | '''DrawCuboid3D'''
|-
| colspan="2" | Draws a basic 3D cuboid onto the LEDs 
|-
|-
| colspan="2" | Length of time in ms the buzzer will remain off 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | X1
| width="90%" | NumberLoops
|-
|-
| colspan="2" | Start X pixel coordinate 
| colspan="2" | Number of times to repeat the sequence. Range 1-255 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" | Y1
| width="90%" | Frequency
|-
|-
| colspan="2" | Start Y pixel coordinate 
| colspan="2" | frequency in hz to output to the Piezo sounder 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Z1
|-
| colspan="2" | Start Z pixel coordinate 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | X2
|-
| colspan="2" | End X pixel coordinate 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Y2
|-
| colspan="2" | End Y pixel coordinate 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Z2
|-
| colspan="2" | End Z pixel coordinate 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | DrawStyle
|-
| colspan="2" | Sets the draw style - 0=Soild, 1=Edge, 2=Corners 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | R
|-
| colspan="2" | Red Colour Channel 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | G
|-
| colspan="2" | Green Colour Channel 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | B
|-
| colspan="2" | White Colour Channel 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
Line 417: Line 129:




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===BuzzerOnDelay===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
| width="90%" class="mtx-class-macrohead" | '''BuzzerOnDelay'''
|-
|-
| colspan="2" | Inisialises the RGB colour RAM to 0,0,0 = LED Off and clocks out the data to  initialise all the LED ICs in the chain. 
| colspan="2" | Switch the Buzzer on for a fixed amount of time 
|-
|-
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" | Time
|}
 
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| colspan="2" | Time in milliseconds to keep the buzzer on 
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ShiftLEDs3D'''
|-
|-
| colspan="2" | Shifts the contents of the display by the number of vertices specified ***Please Note that Wrap mode is currently unavailable*** 
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
|-
| width="90%" | Frequency
|-
| width="10%" align="center" | [[File:]] -
| width="90%" | X
|-
| colspan="2" | Number of pixels to shift the display -1 to 1 / 0 = No Shift 
|-
| width="10%" align="center" | [[File:]] -
| width="90%" | Y
|-
| colspan="2" | Number of pixels to shift the display -1 to 1 / 0 = No Shift 
|-
| width="10%" align="center" | [[File:]] -
| width="90%" | Z
|-
| colspan="2" | Number of pixels to shift the display -1 to 1 / 0 = No Shift 
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | DataMode
|-
| colspan="2" | 0=ResetToZero, 1=WrapAroundDisplay, 2=Smear 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
 
 
{| 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;" | '''Initialise'''
|-
| colspan="2" | Sets up the data memory and draws the simulated LED cube on the panel. 
|-
|-
| colspan="2" | Frequency to output in Hz 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




==Property reference==
==Property reference==


{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''  
| width="90%" class="mtx-class-macrohead" | '''Properties'''  
|-
|-
|-
|-
Line 490: Line 165:
|-
|-
| colspan="2" | Pin used to drive the output to the buzzer 
| colspan="2" | Pin used to drive the output to the buzzer 
|-
| width="10%" align="center" | [[File:Fc9-type-1-icon.png]]
| width="90%" | Color
|-
| colspan="2" | Controls the color of the Buzzer object on the panel. 
|-
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-conn-icon.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Connections'''
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-conn-icon.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Simulations'''
|-
|}
|}

Latest revision as of 14:23, 13 July 2026

Author Matrix TSL
Version 1.0
Category Audio Output


Piezo Sounder component

Drives a simple variable frequency piezo sounder in hardware and simulates the sound in simulation. To actually drive a piezo you may have to amplify the signal from the microcontroller using a transistor or MOSFET.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_PiezoSounder.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_PiezoSounder.fcfx

Detailed description

No detailed description exists yet for this component

Examples

Here is a simple example that will create a siren effect using a piezo sounder. Piezo Siren Depending on your Piezo Sounder you may need to amplify the signal from the microcontroller using a NPN transistor or N channel FET.







Macro reference

BuzzerBeep

BuzzerBeep
Switches the buzzer on and off automatically to allow for a series of beeps 
- UINT OnTime
Length of time in ms the buzzer will remain on 
- UINT OffTime
Length of time in ms the buzzer will remain off 
- BYTE NumberLoops
Number of times to repeat the sequence. Range 1-255 
- UINT Frequency
frequency in hz to output to the Piezo sounder 
- VOID Return


BuzzerOnDelay

BuzzerOnDelay
Switch the Buzzer on for a fixed amount of time 
- UINT Time
Time in milliseconds to keep the buzzer on 
- UINT Frequency
Frequency to output in Hz 
- VOID Return


Property reference

Properties
Output Pin
Pin used to drive the output to the buzzer 
Retrieved from "https://www.flowcode.co.uk/wiki/index.php?title=Component:_Piezo_Sounder_(Audio_Output)&oldid=46832"