Hi
I'm considering an audio application powered by 3xAAA. It's used only for a duration of about 10-20 minutes and then back a few days later.
From past experience with similar simple equipment I know that from time to time somebody (often me) forgets to turn it off.
--> empty AAA's.
I think of 3 possible solutions to avoid it (I don't mind if the user has to restart after 20min) :
a) add a piêzo buzzer as a reminder with short pulses after 20 minutes
b) put the teensy with the audio board in a low power state after 20 minutes and that could be enough if the power draw is low enough.
c) cut the power to the teensy by the program.
Questions :
b) How low power is possible with the audio board?
c) are there simple ways?
I'm considering an audio application powered by 3xAAA. It's used only for a duration of about 10-20 minutes and then back a few days later.
From past experience with similar simple equipment I know that from time to time somebody (often me) forgets to turn it off.
--> empty AAA's.
I think of 3 possible solutions to avoid it (I don't mind if the user has to restart after 20min) :
a) add a piêzo buzzer as a reminder with short pulses after 20 minutes
b) put the teensy with the audio board in a low power state after 20 minutes and that could be enough if the power draw is low enough.
c) cut the power to the teensy by the program.
Questions :
b) How low power is possible with the audio board?
c) are there simple ways?