Stm32f4 discovery dac ouput play

[mohit rai]

Posted on November 08, 2017 at 07:32

how can I play two speaker by stm32f4 discovery board?

how can I use both DAC (dac1 and dac2) output to play the speaker?  

[waclawek.jan]

Posted on November 09, 2017 at 00:43

There is an example of using DAC in [STM32Cube_FW_F4_V1.16.0]\Projects\STM32F4-Discovery\Examples\DAC\DAC_SignalsGeneration\. It's just one channel but may provide a starting point if you use Cube. Note that you cannot connect speaker directly to DAC output pin, as it's relatively high impedance; you'll need to add a high input impedance power amplifier.

JW

[mohit rai]

Posted on November 10, 2017 at 11:51

hello,

Thank you for your response. I have used lm386 amplifier circuit. Now, it is working.

Regards,

Mohit rai