Choose the heart
Use a Raspberry Pi 4 Model B, a reliable 5.1 V / 3 A USB-C supply, and a name-brand 16 GB+ microSD card.
Pi 4 details ↗OPEN POCKET MIXER · RASPBERRY PI · BUILT TO BE BUILT
Every app.
One groove.
DJVellum listens, matches, and blends whole musical bars so two wildly different tracks can find a surprisingly good conversation.
Built to be built. You’ve got it made.
Created by Miles Johnston with Cody Vellum, an OpenAI Codex AI collaboration.
LIVE
SEAMS
SEAMS
02 friends, phones, or tablets
02 independent Bluetooth inputs
∞ unlikely combinations
THE BUILD KIT · BUILT TO BE BUILT
A real little DJ rig, not a black box.
Keep it cool
A ventilated case, heatsinks, and a small fan belong in every pocket rig. Clean sound likes a cool computer.
Pi hardware guide ↗Bring a co-pilot
The standard rig has two Bluetooth inputs: Pi Bluetooth plus a tiny Classic Bluetooth USB adapter. Two people choose the collision.
Adapter checklist ↗Important: a weak charger or battery pack can cause dropouts and corrupt storage. Test the finished rig at low volume before trusting it at a party.
CANADA-READY ORDER LIST · NO AFFILIATE LINKS
Pi 4 Model B, 2 GB ↗3 A supply + inline switch ↗32 GB A2/V30 microSD ↗Metal case + dual fan ↗8-BIT HEART. ALL-ERA EARS.
Chiptune chaos.
Musical results.
Square waves, arpeggios, drum loops, NES and Atari melodies: DJVellum makes chiptunes feel huge. Match one with another game track—or let a pixel-era hook collide with something completely unexpected.
HEAR A POCKET MIX
Split-deck chiptune experiment
Click Chiptunes above to startLoops on your device after it loads once. No surprise autoplay.
Built for curious ears. Start with the volume down, then make a little noise.
MAKE, REMIX, RESELL
Builders may make a fair buck.
DJVellum is MIT-licensed. You can assemble a rig, improve it, support it, and sell it. Include the licence and third-party notices, make the included parts clear, and do not present your build as officially endorsed.