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Telemega beep volume

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Ric

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I'm having a hard time hearing the beeps while the rocket is on the pad. I've lowered the beep freq but I'd like to increase the volume. Is there a way to do that?
 

Reinhard

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The beeper on the Altus Metrum devices is connected directly to the GPIO of the micro-controller and therefore most likely driven with a fixed amplitude square wave.

1613940360140.png



There is no way to simply crank up the volume. This would require a redesign of the altimeter. But you can try to find a frequency that you can hear better. The frequency response of the beeper is a good starting point for which frequencies to try, but the end result also depends on your individual hearing and other factors.
1613940515324.png

Source: https://product.tdk.com/info/en/catalog/datasheets/piezoelectronic_buzzer_ps_en.pdf (page 4).


Maybe there is a company that offers a louder beeper in the same form factor, but this would require soldering too. Besides that, tinkering with the frequency is probably the only thing that can be done.


Reinhard
 
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Ric

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The beeper on the Altus Metrum devices is connected directly to the GPIO of the micro-controller therefore and most likely driven with a square wave.

View attachment 451721


There is no way to simply crank up the volume. This would require a redesign of the altimeter. But you can try to find a frequency that you can hear better. The frequency response of the beeper is a good starting point for which frequencies to try, but the end result also depends on your individual hearing and other factors.
View attachment 451722
Source: https://product.tdk.com/info/en/catalog/datasheets/piezoelectronic_buzzer_ps_en.pdf (page 4).


Maybe there is a company that offers a louder beeper in the same form factor, but this would require soldering too. Besides that, tinkering with the frequency is probably the only thing that can be done.


Reinhard
Thanks. I was afraid that would probably be the answer.
 

FredT

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I pretty much ignore the beeps. I just check TeleMega status through the AltusDroid app on my phone. Shows me everything I need to know and more than the beeps would tell.
 
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