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.
Microphone (sound)
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:
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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
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Simulation
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