yihong0618

yihong0618 / bbtag

Public

blue tag show

46
1
100% credibility
Found Apr 01, 2026 at 46 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
Python
AI Summary

A user-friendly tool for sending pictures and formatted text to Bluetooth e-ink labels to update displays like price tags or notes effortlessly.

How It Works

1
🔍 Discover BluETag

You hear about a handy tool that lets you wirelessly update your e-ink labels, like price tags or notes, right from your computer.

2
💻 Get Ready

Download the tool to your Mac or Linux computer and make sure your Bluetooth is on – it takes just a few minutes.

3
📡 Find Your Labels

Run a quick scan to spot your nearby e-ink labels, and it remembers your favorite one for next time.

4
Pick What to Show
🖼️
Send a Picture

Pick any image from your photos, and it fits perfectly on the label.

✏️
Add Text Notes

Type in messages, dates, or schedules, and it arranges them neatly with colors.

5
🚀 Send It Live

Hit send, and in seconds your label refreshes with the new picture or message – magic!

✅ Label Updated

Step back and smile as your e-ink label now shows your fresh content clearly and vibrantly.

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Star Growth

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AI-Generated Review

What is bbtag?

bbtag is a Python CLI and library for pushing images or auto-formatted text to Bluetooth e-ink tags like BT370R blue tag devices, skipping vendor apps entirely. It scans BLE for devices (EPD- or EDP- prefixed), quantizes images to 4-color or bicolor palettes, and transmits via optimized protocols for 3.7-inch (240x416) or 2.13-inch (250x122) screens. Developers get quick updates for labels, dashboards, or schedules with commands like `bluetag text "14:00 Meeting\nRoom A" --title "Today"`.

Why is it gaining traction?

Zero-setup CLI with device caching, preview mode, and smart text layout that scales fonts to fit perfectly, plus color options for titles and separators. Python API exposes image rendering and BLE push for scripts, while an optional FastAPI server adds REST endpoints for remote fleet control. Handles LZO compression and packet timing out-of-box, making BLE e-ink painless versus raw bleak hacks.

Who should use this?

Hardware hackers prototyping BLE dashboards for API stats or room bookings on e-ink tags. Office IT folks dynamically updating conference labels or price stickers. Python IoT devs needing quick BLE image pushes without protocol reverse-engineering.

Verdict

Solid pick for blue tag owners—crisp docs, examples, and MIT license make it production-ready for niches. With 46 stars and 1.0% credibility score, it's immature but reliable on target hardware; prototype first.

(198 words)

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