Tm680 Keyboard Software May 2026
Out of the box, the TM680 works fine using default shortcuts. However, the software unlocks three critical features:
Warning: Do not download "Universal Driver" software from random forums. The TM680 has two distinct firmware variants. Using the wrong software will brick your board until you manually re-flash it.
| Variant | Common Names | Software Type | Key Feature | | :--- | :--- | :--- | :--- | | V1 (Original) | TM680, LTC NB681 | Old "TM680.exe" (灰色界面) | Rotary encoder works by default | | V2 (Upgraded) | TM680 Pro, Gamakay LK67 | Gamakay Driver (彩色界面) | Per-key RGB, better macro engine | | V3 (Wireless) | TM680 Tri-Mode | "TM680 Wireless Driver" | Bluetooth/2.4G toggle in software |
⚠️ Critical: Do not use "Gamakay LK67" software on a standard LTC TM680. It will permanently lock the encoder to volume control only. tm680 keyboard software
Subject: Analysis of Configuration Software, Firmware Architecture, and User Implementation for the TM680 Series Mechanical Keyboard
Date: October 26, 2023 Category: Peripherals & Input Devices
Common bug: Macros do NOT work on the encoder press if the macro includes modifier keys (Ctrl, Alt, Shift) – they ghost. Workaround: Assign macro to a regular key instead. Out of the box, the TM680 works fine using default shortcuts
The macro system is surprisingly capable for a budget keyboard.
| Bug | Symptoms | Solution |
| :--- | :--- | :--- |
| Software doesn't detect keyboard | "No device connected" | Unplug/replug USB. Try USB 2.0 port (not 3.0). Kill "hid.exe" in Task Manager. |
| Encoder reverses direction | Turning right turns volume down | No software fix. Physically desolder encoder and rotate 180°, or live with it. |
| RGB freezes after sleep | Lights stuck on one color | Unplug/replug, or press Fn + R (V2 only) to reset RGB. |
| Key repeats infinitely | Holding A types aaaaaaaa... | Macro loop is stuck. Reflash firmware (see Part 6). |
| Fn key layer stuck on | All keys act as if Fn is held | Press Fn five times rapidly. If fails, unplug battery (wireless models). |
The TM680 (also known as the LTC NB681, Gamakay LK67, or similar variants) is a popular 68-key mechanical keyboard known for its triple-mode connectivity (wired, 2.4GHz, Bluetooth), south-facing RGB LEDs, and a distinctive rotary encoder knob. However, to unlock its full potential—remapping keys, adjusting the knob’s behavior, programming macros, and customizing RGB effects—you need the dedicated TM680 driver software. Warning: Do not download "Universal Driver" software from
Click any key in the software UI → pick a color. This overwrites the global mode for that key.
Warning: Per-key settings are stored in volatile memory. If you unplug the keyboard, they reset to global mode.
To make RGB stay off after reboot: Set Brightness to 0 → Save to keyboard memory (button at bottom of UI).