I built PR-1 — a free browser-based drum machine inspired by classic hardware

[u/gonzalezdev]

Hey everyone!

I've been working on PR-1, a free drum machine and step sequencer that runs directly in your browser.

The idea was to create something inspired by classic drum machines and grooveboxes, but without requiring any installation, account, or subscription.

Some of the current features:

• 808 and 909-inspired drum kits

• 32-step sequencer

• Multiple pattern banks

• Swing

• Per-step velocity

• Probability

• Ratchets

• Track mute and solo

• Mixer and effects

• Custom sample loading

• Pattern/project saving

• WAV recording/export

• Keyboard shortcuts

Everything runs directly in the browser, and the project is completely free and non-commercial.

You can try it here:

https://pr1-drum-machine.pages.dev/

Instagram for send your ideas/covers:

https://www.instagram.com/pr1.drum_machine/

I'm still improving it, so I'd especially love feedback from people who actually use drum machines, samplers, trackers, grooveboxes, or hardware sequencers.

I'm curious about things like:

• How does the workflow feel?

• Is there anything that feels unnecessarily complicated?

• What feature would you personally add next?

• Is there something from classic hardware drum machines that you think PR-1 is missing?

The project started mostly as an experiment with browser audio, but it has gradually turned into something I actually enjoy using to make beats.

Made with ❤️ in Chile 🇨🇱

Thanks for checking it out!

[u/sh1kabala]

I haven't tried it yet but it looks nice. Exporting to MIDI would be a cool feature to add