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General Category => Discussion - EVE => Topic started by: Qrenz on April 21, 2021, 12:54:05 PM

Title: Circuit to Connect to Audio Output Pin
Post by: Qrenz on April 21, 2021, 12:54:05 PM

Hi,
I have only very little knowledge about audio circuit (amplifier, filter, etc), so please forgive me.

What should be the recommended circuit to connect to the audio output pin (AUDIO_L) on BT815/6 ? So that it can working to play a sound/tone/voice.
and also at the end of the circuit should be connected to a speaker right?
What is the specification of speaker for use with EVE BT815/6 chip?

Thank you.

Title: Re: Circuit to Connect to Audio Output Pin
Post by: BRT Community on April 22, 2021, 09:56:19 AM

Hi,

We have an example circuit in this development module below (see page 11)

https://brtchip.com/wp-content/uploads/Support/Documentation/Datasheets/ICs/EVE/DS_VM816C.pdf (https://brtchip.com/wp-content/uploads/Support/Documentation/Datasheets/ICs/EVE/DS_VM816C.pdf)

This circuit can be used with the CleO Speaker below, you can find the spec of the speaker used in this datasheet

https://brtchip.com/wp-content/uploads/Support/Documentation/Datasheets/Modules/Cle0/DS_CleO-Speaker.pdf (https://brtchip.com/wp-content/uploads/Support/Documentation/Datasheets/Modules/Cle0/DS_CleO-Speaker.pdf)

Best Regards, BRT Community

Title: Re: Circuit to Connect to Audio Output Pin
Post by: Qrenz on April 25, 2021, 02:21:53 PM

I see, so it will work with 0.5W 8Ohm type of speaker, I will try with SMD speaker soldered onboard.

Thank you

Title: Re: Circuito para conectarse al pasador de salida de audio
Post by: TFTLCDCyg on April 28, 2021, 03:52:43 AM

It is possible to connect the audio output line to the auxiliary of any speaker, just share GND between the MCU and the speaker. You can even use a bluethoth audio transmitter

Video: audio test (https://www.youtube.com/watch?v=ni0_DRU5PAQ&ab_channel=JulioG)