Piezo Speaker Sound Pressure vs Frequency

[shiyouganai]

Hello All,

This is my first post here, since picking up an Arduboy to fool around with. The short of it is that I have been working on a game for a month or two that makes extensive use of sound, and I have been wondering if the piezo part in the Arduboy has any documentation. I searched here, and couldn’t find any schematic with part numbers for it, and I do not really want to disassemble my own Arduboy to poke around yet.

Specifically, I’m looking for some data like this (taken from some random speaker datasheet):

I would like to know the relationship between SPL and Frequency so that I can more precisely limit the frequencies I produce to be within a nice, loud range for the speaker. In general, of course, most buzzers are tuned to the mid-to-upper range of human audible frequencies. Having some more precise info would be cool, though.

Thanks for any help in advance, and I look forward to showing people here what I have created, when it’s ready for sharing.

[filmote]

There was a picture of the Arduboy opened up to show the names on the PCB - I cannot find it but it is on the site somewhere - it may show enough detail for you to identify the speaker. Maybe someone can point @shiyouganai to it?

[Keyboard_Camper]

I don’t think there’s a part number on the piezo.
If your lucky there may be some info buried in the kickstarter comments but I think you’ll have to contact @bateske or seeed.

[shiyouganai]

Thank you both for the responses. I suppose that this is a question best suited for @bateske to answer, if possible.

Thanks again for any assistance.

[Pharap]

No clue where they are on the forum, but fortunately I have both saved.
Neither provide any info on what the speaker it is as far as I can tell,
but at least it shows what pins it’s hooked up to.

It looks to me like different speakers are being used for different boards.

[Dreamer3]

Dude what is that from? I didn’t know my name was on a circuit board!

[Keyboard_Camper]

Dude what is that from?

Wall of fame (potential spoiler)

After several people have messaged me about finding the Wall of fame I feel enough time has passed to show it and there is concern about people doing damage looking for it. “Behind the gold and round the back do not enter if skill you lack.“ since receiving my special edition I’ve not had time to play the game but I found this 10 mins after unboxing. [image]

I feel shame I just realised I’ve still not got round to playing the game.