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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Jolm
Hi,
I like to build a device that recognizes certain audio frequencies. The usecase is as follows:
My daughter is diabetic and weares an Insulin pump. If the blood sugar is out of range the pump plays an alarm beep. At fast decreasing sugar values it plays a three tone melody.
I tried to use a standard Baby Monitor to transfer alarms to my bed room but baby monitors do not hear that frequencies at all. So I need to solder something.
My basic question is: can I connect a microphone to the analog Input and separate the beep frequency from all the other noise by software in the espruino or shoud I connect an external ADC? At a later stage I like to recognize three tone melodies to separate different alarms.
Does this work at all?
Thanks,
Jolm