49 lines
4.7 KiB
Markdown
49 lines
4.7 KiB
Markdown
---
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title: Introduction to ZMK
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sidebar_label: Introduction
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slug: /
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---
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ZMK Firmware is an open source (MIT) keyboard
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firmware built on the [Zephyr™ Project](https://zephyrproject.org/) Real Time Operating System (RTOS). ZMK's goal is to provide a modern, wireless, and powerful firmware free of licensing issues.
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## Features
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ZMK is currently missing some features found in other popular firmware. This table compares the features supported by ZMK, BlueMicro and QMK:
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| **Feature** | ZMK | BlueMicro | QMK |
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| ------------------------------------------------------------------------------------------------------------------------- | :-: | :-------: | :-: |
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| Low Latency BLE Support | ✅ | ✅ | |
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| Multi-Device BLE Support | ✅ | | |
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| [USB Connectivity](behaviors/outputs) | ✅ | | ✅ |
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| User Configuration Repositories | ✅ | | |
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| Split Keyboard Support | ✅ | ✅ | ✅ |
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| [Keymaps and Layers](behaviors/layers) | ✅ | ✅ | ✅ |
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| [Hold-Tap](behaviors/hold-tap) (which includes [Mod-Tap](behaviors/mod-tap) and [Layer-Tap](behaviors/layers/#layer-tap)) | ✅ | ✅ | ✅ |
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| [Keyboard Codes](codes/#keyboard) | ✅ | ✅ | ✅ |
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| [Media](codes/#media-controls) & [Consumer](codes/#consumer-controls) Codes | ✅ | ✅ | ✅ |
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| [Encoders](features/encoders)[^1] | ✅ | | ✅ |
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| [OLED Display Support](features/displays)[^2] | 🚧 | 🚧 | ✅ |
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| [RGB Underglow](features/underglow) | ✅ | ✅ | ✅ |
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| One Shot Keys | 🚧 | ✅ | ✅ |
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| Combo Keys | 🚧 | | ✅ |
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| Macros | 🚧 | ✅ | ✅ |
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| Mouse Keys | | ✅ | ✅ |
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| Low Active Power Usage | ✅ | | |
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| [Low Power Sleep States](https://github.com/zmkfirmware/zmk/pull/211) | 🚧 | ✅ | |
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| [Low Power Mode (VCC Shutoff)](https://github.com/zmkfirmware/zmk/pull/242) | 🚧 | | |
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| [Battery Reporting](https://github.com/zmkfirmware/zmk/issues/47) | 🚧 | ✅ | |
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| Shell over BLE | | | |
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| Realtime Keymap Updating | 💡 | | ✅ |
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| AVR/8 Bit | | | ✅ |
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| [Wide Range of ARM Chips Supported](https://docs.zephyrproject.org/latest/boards/index.html) | ✅ | | |
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[^2]: Encoders are not currently supported on peripheral side splits.
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[^1]: OLEDs are currently proof of concept in ZMK.
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## Code Of Conduct
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Please note that this project is released with a
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[Contributor Code of Conduct](https://www.contributor-covenant.org/version/2/0/code_of_conduct/).
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By participating in this project you agree to abide by its terms.
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