FireFly10

$38.95–$56.95

FireFly10 — the ATtiny10 FireFly. Same flip-on mason-jar spirit, DoubleFlip beacon modes, and real SMD parts so you can practice surface-mount soldering.

FireFly10 — same glow, tighter silicon

FireFly10 is the compact cousin of the Firefly Lightjar. Same mason-jar flip-on idea — camp, outage, patio — built around a pre-programmed ATtiny10 (6-pin, 1 KB flash / 32 bytes RAM) — firmware tuned to the bone, no programmer required.

You still get the winning UX from the standard kit:

• Quick flip → on/off (no buttons in the rain or gloves)
• Hold inverted → brightness in steps
• Auto sleep after ~10 minutes off → ready when you need it
• Dual 14500 Li-ion in parallel for runtime; MOSFET-driven lamp

FireFly10-only firmware extras

Where FireFly10 pulls ahead of the ATtiny85 Lightjar:

• DoubleFlip (flip–return twice) enters Beacon mode
• Beacon Mode 1 — patterned flash (bright pulses + rapid blinks) for find-me / camp signal
• Beacon Mode 2 — SOS (· · · — — — · · ·)
• Beacon Mode III: Candle — soft, random flame flicker that drifts smoothly, with the odd dip like a draft caught the wick; a real candle in the jar for patio nights
• DoubleFlip again to scroll beacon modes

All of that lives in a tightly optimized image — no fat libraries.

SMD soldering practice

Unlike the through-hole Lightjar, FireFly10 uses surface-mount (SMD) parts. That makes it a friendly way to practice soldering SMDs — real pads, real flux, real tiny packages — while still ending up with a useful camp light when you’re done. The ATtiny10 arrives pre-programmed — same as the Lightjar’s ATtiny85.

If you’ve only ever done through-hole and want to level up without a scary first board, this is the kit.

Who it’s for

Makers who want FireFly UX in a smaller MCU footprint, beacon/SOS gestures for trail and outage use, or a first real SMD soldering project. Prefer classic through-hole ATtiny85 simplicity? Start with the standard Firefly Lightjar.

What’s included

• FireFly10 PCB + SMD parts (pre-programmed ATtiny10) — practice surface-mount soldering
• Guidance for jar enclosure (same family as Lightjar)
• You supply: batteries, a wide-mouth mason jar (or a wide-mouth pickle jar — regular-mouth jars are too small), mounting bits
• The board is 68.6 mm (2.70 in) across, so it needs a jar mouth at least that wide on the inside; measure the opening of your jar to check.

Build guide / interactive parts list

Preview — FireFly10 is coming soon. Open the FireFly10 interactive parts list ↗: click a part to highlight where it goes on the board, and check it off as you place it. There’s more build help on the Support page.

Board views

Isometric 3D + flat PCB plots from Mildrew.

Availability

FireFly10 is coming soon and isn’t for sale yet. Want one? Check back soon.

Board & product views