Microphone (sound)

A microphone produces a voltage when it receives a sound input. When put through amplifying circuit the signal is increased to a level that a PICAXE can use to detect when sound is present.

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Schematic

PCB

Read an amplified sound level

This program will read the output voltage of a microphone amplifier connected to analogue input pin C.0 and report the value read in the 'b1' variable. The voltage output from the amplifier must be between 0V and V+.

Code Example:
main:	readadc C.0, b1		; Read the amplifier output analogue value
	debug			; Display the value
	pause 1000		; Wait a while
	goto main		; Repeat
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Create Module

A microphone with an amplifier circuit may be connected directly to the generic terminal block create module.

Bill of Materials

DescriptionCodeQty

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