T-Knob

Overview

LILYGO T-Knob is a smart rotary controller based on the ESP32-C6-MINI-1U wireless module. It integrates a BLDC (Brushless DC Motor) driven by the TMC6300 chip and an MT6701 Hall sensor for high-precision rotation detection, delivering a haptic rotary interaction experience. Supports USB Type-C for power and data. Suitable for smart home control (volume adjustment, lighting), industrial HMI, and haptic feedback applications.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
T-Knob	✓		Motor control, Hall sensor, BLDC examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Open the T-Knob project folder
4. Open platformio.ini, uncomment the example under [platformio]
5. Click ✓ to compile, connect via USB-C, click → to upload

Arduino

1. Install Arduino IDE
2. Install Arduino ESP32
3. Open the example .ino file
4. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32C6 Dev Module
Port	Your port
CPU Frequency	160 MHz
Core Debug Level	None
USB DFU On Boot	Disable
Flash Mode	QIO
Flash Size	4MB (32Mb)
Partition Scheme	Huge APP (3MB No OTA/1MB SPIFFS)
Upload Speed	921600

5. Click Upload

Development Platforms

1. Visual Studio Code
2. Arduino IDE
3. ESP-IDF

Video

Key Features

• ESP32-C6-MINI-1U: Wi-Fi 6 (2.4 GHz), Bluetooth 5 (LE), 802.15.4
• TMC6300 BLDC motor driver with torque feedback
• MT6701 Hall sensor for high-precision rotation detection
• 4 × onboard LEDs (GPIO20, 21, 22, 23)
• 1 × buzzer, 1 × QWIIC interface
• USB Type-C power and data
• Compact form factor: 32 × 32 × 34 mm

Product Parameters

Feature	Specification
MCU	ESP32-C6-MINI-1U
Flash	4 MB
Wi-Fi	Wi-Fi 6 (2.4 GHz 802.11ax)
Bluetooth	Bluetooth 5.0 LE
802.15.4	Thread / Zigbee
Motor Driver	TMC6300
Hall Sensor	MT6701
LEDs	4 × (GPIO20–23)
Buzzer	1 ×
USB	1 × Type-C
Expansion	1 × QWIIC
Power	5 V / 500 mA
Buttons	RESET + BOOT
Mounting Holes	1 × M2
Dimensions	32 × 32 × 34 mm

Pin Diagram

Dimension Diagram

Schematic

• T-Knob V1.0 Schematic

Datasheet

• TMC6300 Datasheet
• MT6701 Datasheet

Software Development

• T-Knob GitHub Repository

FAQ

Version History

Version	Release Date	Update Description
T-Knob V1.0	—	Initial version