How is a 32-column sand-bar different from a normal countdown timer?

A normal timer shows a number you must stop and read. The 8×32 matrix drains one whole pixel column every 90 seconds, so the amount of light remaining is a continuous peripheral cue you absorb while working—no glance, no mental math.

Can I change the sprint length or the 90-second drain speed?

Yes. Open the Sleeve Studio app and edit the sprint-length and drain-speed settings in the mode settings, then send it to the sleeve over Bluetooth in seconds.

Does the sand-bar work while I am wearing the sleeve under a shirt?

The soft dark outer weave lets the 256 LEDs glow through cleanly when active, so as long as your forearm is within peripheral sight—resting on a desk or your lap—the draining bar stays readable.

Use Case #42 · Accessibility, Health, Parenting & Everyday Friction · All 50 Modes

ADHD Time-Blindness Peripheral Visual Sand-Bar on a Forearm LED Sleeve

Watch time drain in your peripheral vision: a 32-column LED sand-bar empties one column every 90 seconds across a 48-minute focus sprint — $199, no glance required.

See time, don't check it: 32 pixel columns drain from elbow to wrist, so elapsed time is a continuous peripheral cue you absorb while working.
Pause without a screen break: Tap for a 5-minute grace column or switch to a 25/48/90-minute sprint with a wet-hand or knuckle tap.
Ready out of the box: Ships as one of the 50 built-in modes; tune sprint length, drain speed, and colors in the Sleeve Studio app.

Preorder Sleeve · $199 Free US Shipping Try in Sleeve Studio →

▶ See the 8×32 Forearm Display in Action

Watch the 8×32 RGB LED matrix and 5 conductive-fabric touch pads running timers, kitchen, focus, health and work modes on the forearm sleeve. Concept render · simulated 8×32 display · first production run of 500 units.

Why Clock Apps, Alarms, and Watch Glances Fail Time-Blind Brains

A number you must stop and read: For ADHD, checking a clock breaks focus, and a silent alarm gives no sense of the runway left.
Light as elapsed time: Your outer forearm sits in constant peripheral view, turning 32 columns into a draining sand-bar with no glance or tap.
Peer-reviewed textile roots, shipping hardware: The Oct 2026 NUS Nature paper coined “garment GUI” with a lab-only woven pixel fibre (not for sale); our shipping $199 sleeve uses 5 sewn conductive-fabric pads and a removable 8×32 LED pod.

What Each Forearm Pad Does (Pads 1–5)

Pad 1 (Elbow)Press & hold — Start / pause the 48-minute sand-bar sprint · LED cue: Full 32-bar fills to the wrist; center prints START 48:00

Pad 2 (Upper Mid)Single tap — Append a 5-minute overflow (grace) column · LED cue: Amber +5:00 segment extends the bar past the wrist

Pad 3 (Center)Double tap — Switch sprint length (25 / 48 / 90 min) · LED cue: Bar rescales and label scrolls 48:00 SPRINT

Pad 4 (Lower Mid)Single tap — Instant refill (reset the bar to full) · LED cue: White sweep refill -> 32/32 READY

Pad 5 (Wrist)Swipe — Mark done early and flash a progress summary · LED cue: Green fill + scrolls DONE · 62% LEFT UNUSED

Customize in 30 seconds: Pick this mode in the Sleeve Studio app, type or speak new words or pad actions, and tap Send over Bluetooth — no code.

Frequently Asked Questions

How is a 32-column sand-bar different from a normal countdown timer?: A normal timer shows a number you must stop and read. The 8×32 matrix drains one whole pixel column every 90 seconds, so the amount of light remaining is a continuous peripheral cue you absorb while working—no glance, no mental math.
Can I change the sprint length or the 90-second drain speed?: Yes. Open the Sleeve Studio app and edit the sprint-length and drain-speed settings in the mode settings, then send it to the sleeve over Bluetooth in seconds.
Does the sand-bar work while I am wearing the sleeve under a shirt?: The soft dark outer weave lets the 256 LEDs glow through cleanly when active, so as long as your forearm is within peripheral sight—resting on a desk or your lap—the draining bar stays readable.

Run This Mode on Your Forearm — Reserve Batch 01 ($199)

Complete hardware + 50 modes ($199): 8×32 RGB LED matrix (256 pixels), 5 sewn conductive-fabric touch pads, and a 5-second slide-out washable electronics pod.
Sleeve Studio app ships first: Personalize all 50 modes in plain words before your sleeve arrives (small monthly subscription; zero code).
Zero-risk preorder: First run of 500 units (~30 days to production), free US shipping, 100% refund anytime before shipping + 90-day money-back guarantee.

Preorder Sleeve · $199 Free US Shipping Open Sleeve Studio Full Hardware Specs

Watch → Prove → Buy

Not ready to order yet? Take the next step.

See the hardware in motion, read the peer-reviewed textile research behind it, or reserve your spot in the first production run of 500 sleeves.

STEP 1Watch the sleeve in action Five soft touch pads, an 8×32 RGB LED display, Bluetooth, and a removable electronics pod for gentle washing. See the hardware → STEP 2See how the app customizes any mode Pick from 50 pre-built modes or type a new one in plain words. The Sleeve Studio app ships before your hardware. See Sleeve Studio → STEP 3Preorder the Sleeve — $199 First run of 500. ~30 days to production. Free US shipping. Full refund anytime before it ships. Order now →

90-day money-back guarantee, plus a full refund any time before the sleeve ships.

Questions about your setup? Call +1 725-338-4835 or email alex@midnightdev.dev.