Written by 
Introducing the 1.85‑inch Knob Screen ESP32‑S3 Development Board – the perfect compact companion for makers, engineers, and hobbyists who need a responsive secondary display with tactile control. Designed around the powerful ESP32‑S3 MCU, this board combines a high‑resolution 1.85‑inch TFT screen, an integrated rotary encoder (knob), and full Wi‑Fi/Bluetooth connectivity, making it ideal for volume control interfaces, IoT dashboards, portable gadgets, and custom HMI projects.
Key Highlights
- 🖥️ 1.85‑inch IPS TFT display – 240 × 320 px, 65 K colors, wide viewing angle.
- 🔧 Integrated rotary knob with click – precise analog/digital input for volume, menu navigation, or parameter tuning.
- ⚡ ESP32‑S3 MCU – dual‑core Xtensa LX7, 240 MHz, 8 MB Flash, built‑in Wi‑Fi 802.11b/g/n and Bluetooth 5.0 LE.
- 🔌 Multiple I/O options – 3.3 V logic, SPI, I2C, UART, PWM, ADC, and GPIO pins for expansion.
- 🔋 Low‑power design – deep‑sleep mode down to 5 µA, perfect for battery‑operated devices.
- 🛠️ Ready‑to‑use development kit – pre‑soldered connectors, USB‑C power/programming, and an Arduino‑compatible SDK.
- 📦 Compact footprint – 48 mm × 48 mm board size, fits easily into tight enclosures.
Why Choose This Development Board?
This board is engineered for rapid prototyping and reliable production. The combination of a high‑quality touch‑free knob and a vivid display lets you create intuitive user interfaces without the complexity of separate components. Whether you’re building a smart speaker, a portable media player, a home‑automation controller, or a custom instrument panel, the 1.85‑inch knob screen provides the visual feedback and tactile control you need.
Technical Specifications
- Display: 1.85‑inch IPS LCD, 240 × 320 px, SPI interface
- Microcontroller: ESP32‑S3, dual‑core 240 MHz, 8 MB Flash, 2 MB SRAM
- Connectivity: Wi‑Fi 802.11b/g/n, Bluetooth 5.0 LE
- Rotary Encoder: 12‑bit resolution, push‑button click
- Power: 5 V via USB‑C, 3.3 V regulator, 150 mA typical consumption
- I/O: 20 × GPIO, SPI, I2C, UART, PWM, ADC (12‑bit)
- Operating Temperature: -20 °C ~ +85 °C
- Dimensions: 48 mm × 48 mm × 12 mm (board)
Ideal Applications
- Audio equipment – volume knobs, equalizer displays, DSP controllers
- IoT devices – smart thermostats, lighting panels, sensor dashboards
- Portable gadgets – handheld media players, e‑readers, wearable controllers
- Industrial HMI – machine status screens, parameter setting knobs
- Educational kits – programming labs, robotics interfaces, maker projects
Get Started Quickly
Each board ships with a USB‑C cable, a quick‑start guide, and sample code for Arduino, ESP‑IDF, and MicroPython. Plug the board into your computer, flash the firmware, and you’ll have a fully functional knob‑controlled display in minutes.
Upgrade your prototypes with the 1.85‑inch Knob Screen ESP32‑S3 Development Board and experience the perfect blend of visual feedback and tactile control—all in a tiny, power‑efficient package.
Price: $ 52.30