ESL Tag Tools

Generate IR payloads for Electronic Shelf Labels, convert images to XBM format, and deploy scripts to MULTIPASS firmware. Research use only — only operate on hardware you own.

01 Target ESL

⚠ Research Use Only Only use on hardware you personally own or have explicit authorization to test. Do not use in stores or on deployed systems.

Barcode / Tag ID

Width (px)

Height (px)

TX Repeats

200

Inter-frame Delay (ms)

—

PLID

—

CRC-8

02 Deploy to MULTIPASS

1. Upload script
Copy esltools.js to /scripts/ on your MULTIPASS device via WebUI or SD card.

2. Run
Navigate to Scripts → esltools.js on your MULTIPASS device.

3. Upload IR files
Use the IR File tab to generate .ir payloads, then upload to your MULTIPASS SD card.

4. Image prep
Use the Image tab to convert images to XBM format for ESL display experiments.

Image

IR File

XBM Export

Protocol

Source Image

🖼

Drop image here or click to browse

PNG, JPG, GIF supported

Threshold (B&W)

128

Dither

Invert (white on black)

Fit to ESL dimensions

Preview — ESL Simulation

200 × 80 px

Command Type

Text Content (for Text command)

Invert text

Color clear (vs. black clear)

LED Mode (for LED command)

Generated .ir Content

// Click Generate to build a Flipper-compatible .ir file // for use with MULTIPASS's ir.transmitFile() API

XBM for MULTIPASS Firmware
MULTIPASS's display.drawXBitmap() accepts monochrome XBM-format bitmaps. Use this tab to get the raw XBM data from your processed image for embedding in MULTIPASS JS scripts.

Generated XBM Data

// Load an image in the Image tab, then click Export XBM

MULTIPASS JS Snippet

// Snippet will appear here after export

Hanshow / Newton ESL Protocol (via furrtek)
IR carrier: 1.255 MHz | Modulation: 38 kHz
Encoding: Manchester / NRZ

Packet Structure
[SYNC 9ms] [PLID 7B] [CMD 1B] [PAYLOAD NB] [CRC-8]

PLID Encoding
Barcode → strip prefix → last 13 digits → BCD-encode into 7 bytes (MSB)

Commands
0x10 Text 0x20 Image 0x30 Test
0x40 LED 0x50 Clear

CRC
XOR of all packet bytes (PLID + CMD + Payload)

PLID Calculator

Enter barcode above and click Recalculate.

MULTIPASS JS IR API
ir.transmitFile(path) — transmit .ir file
ir.read(timeout) — receive IR signal
ir.readRaw(timeout) — raw IR data

Upload scripts to /scripts/, IR files to /infrared/ on your MULTIPASS device SD card.

YOU WANT ESL TOOLS AS AN ANDROID APP? CLICK HERE TO DOWLOAD IT!

ESL Tag Tools

📷 Scan Tag Barcode