arduino_midi_library VS rekor

take a look here

The Arduino MIDI Library [1]. Back in 2009, I learned C++ to build it and control my guitar effects pedals with custom electronics as part of my engineering degree.

[1] https://github.com/FortySevenEffects/arduino_midi_library

Your project can be broken up into a number of subprojects. For keyscanning you don't need additional hardware, just the pins from the ribbon cables going to the arduino's digital pins and ground. Since the keys are just switches (two per key, the time difference between the two switches closing giving the source of velocity), you could start with some examples from the Arduino MIDI library (https://github.com/FortySevenEffects/arduino_midi_library). To test MIDI sending you don't even need to start from the keybed just yet, and if you do, you can start with a single key. Once you've got that part figured out end to end (key press/release generates note on/off events) you can work on iterating through the matrix, CC controls etc. MIDI out can be done in different ways. With a 5 pin DIN plug you'd just need two 220 ohm resistors.

On an Arduino compatible platform the configuration of the baud rate at the bare metal layer is taken care of by the library when you call its begin() method. Looking at the example code included with the library it appears that there are no timer interrupts or anything like that required of you in order to use it. Another thing that jumps out is that the call to read() returns a non-zero value if anything has been received that you should use to predicate whether any further attention needs to be spent on it by your code. You may know this but it wasn't apparent from the loop() { MIDI.read\`() }` example that you gave above.

As i have started to combine this with Midi Implementation from FourtySevenEffects lib, i only have done a quick test with two/three strips and did discover follwing issue(s):

Using a library for the midi shield you can register two functions as callbacks. One callback for NoteOn(...) messages and one for NoteOff(...) messages. But thre is much more. In the end the source of truth should always be the docs for the library itself.

Click the link to github (second link in the article) and there's all the source code: https://github.com/FortySevenEffects/arduino_midi_library

Here’s a library that might work.

Solution from GitHub here:

There could be asset hashes in sigstore: https://sigstore.dev/

Is there a good way to run native mobile app GUI tests with GitHub Actions?

A VM/container emulator like anbox, waydroid, (or all of ChromeOS Flex in KVM) in a GitHub Action is probably enough to run GUI tests?

"Build your own SLSA 3+ provenance builder on GitHub Actions"

I expect something like https://sigstore.dev

sigstore is another suite of tools that focuses on attestation and provenance. Within the suite are two tools I heard mentioned a few times at KubeCon: Cosign and Rekor.

Since we can distribute Spin applications using popular registry services, we can also take advantage of ecosystem tools such as Sigstore and Cosign, which address the software supply chain issue by signing and verifying applications using Sigstore's new keyless signatures (using OIDC identity tokens from providers such as GitHub).

With containers being the heart of Cloud Native application development, it has become even more critical to ensure the integrity of the containers. One of the ways to do this to sign and verify the container images.sigstore is a open source project that empowers software developers to securely sign the container images.

https://sigstore.dev - although its really not true to say I built it. I started it off, but very quickly smarter folks then me jumped on board and really took it to all sorts of new directions.

Powered by Wolfi, Chainguard Images are a suite of distroless images that consolidate the base features of the Wolfi undistro into end-user container images that can be integrated into existing workflows. Chainguard Images are fully declarative and reproducible, and include SBOMs that cover all image dependencies. In addition, Chainguard Images are signed via Sigstore, which attests the provenance of all artifacts. All images and corresponding signatures, as well as their SBOMs, are hosted in Chainguard's OCI registry cgr.dev.

What's your thoughts on the sigstore project from the linux foundation?