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 PORTABLE 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
Use a closed, ventilated case with an internal fan and heatsinks. Keep the fan and vents unobstructed so air can move freely.
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.
Carry it with airflow: use a ventilated backpack pouch with space around the enclosure, or a secure lanyard/necklace mount that holds it clear of skin and clothing. Carry the battery separately and keep the vents open.
CANADA-READY ORDER LIST · NO AFFILIATE LINKS
Pi 4 Model B, 2 GB ↗3 A supply + inline switch ↗32 GB A2/V30 microSD ↗Ventilated Pi 4 case ↗Internal cooling fan ↗November 6, 2026 · Pi 4 · 11 GiB image · 16 GB+ storage. Release notes and testing status.
Guest listening and the 3D preview work over the hotspot. Immersive headset XR needs your own trusted HTTPS setup.
Read the complete build and flashing guide →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 LIVE 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.
THREE WAYS IN · SUGGESTED CANADIAN MSRP
Pick your
starting point.
These are fair community-reseller targets, before tax and shipping—not a DJVellum checkout. Builders decide what they can responsibly offer, disclose exactly what is included, and support the people they sell to.
SD Card Only
$25 CAD
For someone who already has a compatible Pi 4, power supply, case, and Bluetooth adapter. Includes a prepared DJVellum card and a plain setup card.
No music included. Buyer supplies compatible hardware.
Assembly Required
$175 CAD
A clearly listed parts bundle: Pi 4, protected case, internal fan, power supply, microSD, and Bluetooth adapter. The buyer makes it their own.
Suggested price for a complete, new-parts kit.
Pre-Assembled
$250 CAD
A tested, portable unit assembled by a local builder, with the included parts named and basic startup help provided.
Local builders set their own support and warranty terms.
Keep it honest: list the exact Pi model, storage size, power supply, case, Bluetooth adapter, and whether the device was tested. Every maker’s build is an official unofficial copy—independent, clear, and made with care.
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.