Pavel

It would be great if Digilent has created a Pmod module based on an audio codec with an integrated amplifier, such as for example CS42L52, that can directly drive a speaker. Unfortunately, the only Pmod that could be qualified as a codec Pmod that I could find is Pmod I2S2. Its output part is based on CS4344 DAC without any amplifier. Since @Tim77 wants to avoid adding an amplifier and wants to output monotones of notes of a musical scale, I think that Pmod AMP2 better matches the requirements than Pmod I2S2. BTW. It would be interesting to check the sound quality of Pmod AMP2 in combination with the second order sigma delta modulator from this project.

Here is a link to an article by @D@n explaining how to use Pmod AMP2: https://zipcpu.com/blog/2019/04/24/pl-pmodamp2.html I think Pmod AMP2 should be able to drive small speakers more reliably than a single pin on the Basys3 board.

I think the pins of the Basys3 board can output enough current to drive only a very low power (0.2-0.5 W) speaker or a piezo buzzer. I'd say the easiest way to make some basic sounds is to use a piezo buzzer that can be directly connected to the pins of the Basys3 board. To get an idea of the sounds that can be achieved this way, here is a link to a tutorial showing a piezo buzzer connected to a pin of the micro:bit board: https://www.hackster.io/anish78/piezo-buzzer-with-bbc-micro-bit-b0fc27 At the very end of this tutorial, there is a video showing the result. The sound quality and the sound volume are quite low.