Events and festivals

Recommended firmware: Meshtastic

The problem

Put tens of thousands of phones in one place and the cell network slows to a crawl. Texts arrive late or not at all, and finding your friends turns into wandering around.

Why mesh helps

Mesh radios talk to each other directly, so the crowd doesn’t matter to the cell network. At DEF CON, the Meshtastic developers shipped special event firmware, and attendees reported more than 2,000 nodes on one mesh, the largest known Meshtastic network at the time. Burning Man got its own custom Playa firmware in 2024, built by Meshtastic developers with the Burning Man community.

Limits

• Too many radios can flood the air. At Hamvention 2024, the event mesh collapsed under traffic from a single user’s MQTT bridge. That’s why big events now ship tuned firmware or settings.
• Big public channels get noisy. Use a private channel for your group.
• Batteries run down over a long weekend, especially on radios with color screens.

Event etiquette

Use the settings or firmware the organizers publish. Set your radio to CLIENT_MUTE so it doesn’t add relay traffic, don’t run MQTT bridges at the event, and leave the hop limit at the default.

Which firmware

Meshtastic, because event organizers and the Meshtastic team have published event setups before, and roles like CLIENT_MUTE exist for crowded meshes. If the event’s organizers run MeshCore instead, use what they use.

What to bring

• A small radio with a long battery life. A card-sized tracker fits a wallet or lanyard.
• If you’d rather not dig out your phone, a radio with its own keyboard and screen.
• A charging plan: a power bank and a cable for every radio.

Arizona heat

Outdoor events in Arizona mean hot tents and cars. Keep radios and power banks in shade, not on a car seat or in direct sun.

Next steps: Picking the right device role, Channels and encryption.

Recommended hardware

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Good

Tracker · Seeed Studio

Seeed SenseCAP Card Tracker T1000-E

MeshtasticMeshCore

Card-sized with GPS; slips into a wallet or lanyard and lasts all weekend.

$40–$50AmazonSeeed Studio

Better

Handheld · LILYGO

LILYGO T-Echo

MeshtasticMeshCore

GPS and e-paper you can read in bright sun without pulling out your phone.

$45–$60AmazonLILYGO

Best

Handheld · LILYGO

LILYGO T-Deck Plus

MeshtasticMeshCore

Keyboard and color screen: message your group with no phone at all.

$75–$90AmazonLILYGO

Sources

Checked on October 18, 2026.

1. meshtastic.org/blog/that-one-time-at-defcon
2. meshtastic.discourse.group/t/meshtastic-burning-man-2024/14293
3. en.wikipedia.org/wiki/Meshtastic
4. meshtastic.org/docs/configuration/radio/device