Since the original Pisound was launched, we have been receiving a wide range of configuration requests from people using Pisound for their custom audio hardware projects and small manufacturing runs. Be it changing MIDI DIN-5 ports to 3.5mm jacks, removing Audio IN altogether, a version without potentiometers, and so on. So we decided to create a board that could bend to any build. The result is Pisound Micro - a super-flexible, tiny platform for bringing your custom audio hardware ideas to life!
Also, Pisound Micro docs are live! You’ll find a quick-start guide, wiring diagrams, and code samples to get you rolling. We’ll be expanding docs further, so if you spot something that’s missing or have a clever idea, let us know!
That’s it! We’re super excited to see what you’ll create with this tiny beast - let’s keep building!
Congratulations Blokas on the new product! I’m definitely thinking this would be a great product to create an “all-in-one” MODEP stomp box! I’ve been thinking about how to do that with the regular PiSound and this just adds a ton of flexibility plus you could easily add footswitches as well.
Waooooo !
As a happy owner of 2 stupendous standard Pisound and one Midihub, i’m so impatient to buy this new tiny and flexible board to customize my guitars.
To the Blokas team, i send you all my best energy from France to keep going on with your smart strategy and the quality of your products : Thanks to you, the eco-system of the Raspberry is now ready to enter professional musicians and multimedia artists live world !!! I am thankful …
It’s just Pisound Micro in an antistatic bag. This is by design - you are left with the freedom to pick your own audio jacks, sockets and controls, if any.
We offer a 40 pin header with long pins on our store as an optional accessory, but any 2.54mm pitch 2x20 female header can be used, for mounting Pisound Micro directly on top of the Raspberry Pi. There’s some links on our docs pointing to various parts that could be used.
We’ve tried to provide as much information as possible in our documentation, including physical layout of the PCB, so users can come up with their own PCB designs for routing out connectors and controls, etc…, to be connected to Pisound Micro directly.
If there’s any additional information you’d like to have, let us know!
This is probably a daft request that clued-in users don’t need:
Could we have a pic of a Pisound Micro mounted on an rPi?
Or maybe a thread where early adopters can show their projects (like @Andzelmas above)?
It might just tempt some sufferers of S.A.S (Soldering Anxiety Syndrome) like me
The Pisound Micro is lifted a bit above to leave some space for the active cooler underneath, so it’s not entirely touching it, users may decide what height to go with. I soldered it by hand, without any frame or holders, but it might be a good idea to first mount the GPIO header on a Raspberry Pi, screw on some standoffs, and then do the soldering, this way, the alignment would be ideal for the desired height.
Here’s some bonus pictures of an audio connector expander board I made for my internal testing, it’s for an earlier pin incompatible revision of Pisound Micro though:
Hi Blokas Team, congrats for your latest creation.
I am unsure about the number of audio inputs an outs. Reading the docs, i see that is possible to have 4 mono inputs and four mono outputs (or possibly 6 mono outputs). looking at your yellow pcb i see 3 mono inputs jacks, and 2 mono jack outs, 1 stereo minijack out, 1 stereo jack headphone out. Are those inputs and outs independent alsa connections? In pure data can i have adc~ 1234 and dac~ 123456? What are the unpopulated holes in the pcb close to the rev1 label for?
Thanks for your consideration, cheers.
There’s 2 audio channels seen by the OS, so it is a stereo audio card. There are multiple input and output pins on the Codec chip which are routed out to the audio headers. They have some individual ALSA mixer controls, but all get mixed and flow into the left & right audio channels.
To gain more understanding of the internal signal flow, you could take a look at the ADAU1961 datasheet, it has graphs of recording and playback audio signal paths.
A little update - we have polished the Python wrapper for libpisoundmicro, so it’s more natural to use for Python users, as it now follows the usual Python snake_naming_convention, as well as extended the Python API documentation.
