Which keyboards does AM LED JSON Builder support?

Angry Miao Cyberboard (CB_XX, 71 keys) and Angry Miao AM RGB-65 (RGB_65, 65 keys).

Do I need to install anything?

No. AM LED JSON Builder runs entirely in the browser. Nothing is uploaded to any server, and no signup is required.

How do I apply the generated JSON to my keyboard?

Download the JSON, then upload it to diy.angrymiao.com (the official Angry Miao DIY site) under your keyboard model. The JSON is byte-compatible with the official upload flow.

Yes. AM LED JSON Builder is free, with no signup.

What text effects and animations are supported?

Scrolling text on a 5x40 LED display; solid, gradient, and rainbow color modes; page transitions; text effects such as bold, glow, and blink; and 14 per-key LED patterns including pulse, wave, sweep, ripple, chase, comet, matrix rain, heartbeat, sparkle, twinkle, fire, mirror panel, and reactive scroll.

AM LED JSON Builder

Free in-browser editor that generates LED profile JSON for Angry Miao Cyberboard and AM RGB-65 mechanical keyboards. Compose scrolling text, gradients, rainbow effects, transitions, text effects, and per-key animations, then download a JSON file that you can upload directly to diy.angrymiao.com.

Supported devices

Angry Miao Cyberboard (CB_XX) — 71 keys with a 5×40 top LED display
Angry Miao AM RGB-65 (RGB_65) — 65 keys with a 5×40 top LED panel

Features

Scrolling text on the 5×40 LED display (built-in 5×5 pixel font + sprite library)
Color modes: solid, horizontal A→B gradient, rainbow
Page-based content composer with transitions and text effects
14 per-key LED patterns: solid, pulse, wave, sweep, ripple, chase, comet, matrix rain, heartbeat, sparkle, twinkle, fire, mirror panel, reactive scroll
Live keyboard preview with chassis color theming
Outputs JSON byte-compatible with diy.angrymiao.com

How to use

Choose your device (Cyberboard or AM RGB-65).
Type text or pick sprites in the page composer.
Choose a color mode (solid / gradient / rainbow).
Add transitions, text effects, and a per-key LED pattern.
Click Download to save the JSON file.
Upload the JSON to diy.angrymiao.com.

Pricing

Free, no signup required. The app is fully client-side — nothing is uploaded to any server.

Languages

English, 日本語 (Japanese), 中文 (Simplified Chinese).