Description

ESP32-S3 Knob Display development board integrates two microcontrollers, ESP32-S3 and ESP32, enabling implementation of advanced IoT applications, user interfaces and control systems. The design includes a 1.8 inch IPS display with 360 x 360 resolution and capacitive touch support, allowing creation of interactive control panels and data visualization systems.

Integrated rotary encoder enables precise parameter control such as volume adjustment, screen switching or interface navigation. The module supports 2.4 GHz Wi-Fi and Bluetooth 5 as well as Classic Bluetooth, enabling communication with computers, smartphones and IoT systems. The board can operate as a PC secondary screen, multimedia control panel or system monitoring interface.

Onboard peripherals include an audio decoder, microphone, vibration motor driver and TF card slot, supporting multimedia and human-machine interface applications. CNC-machined metal enclosure improves mechanical durability and allows use in portable devices.

This version includes a factory-installed 3.7 V lithium battery with 800 mAh capacity, enabling standalone and mobile operation without external power supply.

1.                                                                                                             2.

1.

1. ESP32-S3R8 - Wi-Fi and Bluetooth SoC, operating frequency 240 MHz, 8 MB PSRAM
2. ESP32-U4WDH - Wi-Fi and Classic Bluetooth, operating frequency 240 MHz, 4 MB Flash
3. PCM5100A - high-performance stereo DAC with I2S interface
4. USB to UART
5. Flash memory: 16 MB
6. Dual encoder - for ESP32-S3 and ESP32 respectively
7. TF card slot
8. DRV2605 - vibration motor driver with I2C interface
9. CH445P - 4-channel SPDT 3.3 V low-resistance analog switch
10. Microphone
11. Ceramic antenna
12. PH1.27 10-pin SMD connector

2.

1. Vibration motor
2. PH1.27 10-pin SMD connector
3. PH1.25 lithium battery connector
4. 3.5 mm audio jack
5. Power button
6. USB-C connector - switching between ESP32-S3 USB and ESP32 UART depending on plug orientation
7. ESP32-S3 BOOT button - press and power on again to enter download mode

Features

• Microcontroller: ESP32-S3R8 + ESP32-U4WDH
• Operating frequency: up to 240 MHz
• SRAM: 512 kB
• ROM: 384 kB
• Flash memory: 16 MB
• PSRAM: 8 MB
• Connectivity: Wi-Fi 2.4 GHz (802.11 b/g/n), Bluetooth 5 LE, Bluetooth Classic
• Display: IPS 1.8 inch
• Resolution: 360 x 360
• Colors: 262K
• Brightness: 600 cd/m2
• Contrast ratio: 1200:1
• Display driver: ST77916
• Display interface: QSPI
• Touch: capacitive
• Touch controller: CST816
• Communication interface: I2C, SPI
• Audio IC: PCM5100A
• Audio connector: 3.5 mm
• Card slot: TF
• Microphone: built-in
• Rotary encoder: yes
• Vibration motor: yes
• Vibration driver: DRV2605
• Power supply: 3.7 V (battery) / USB-C
• Battery capacity: 800 mAh
• Battery connector: PH1.25
• Connector: USB-C
• Dimensions: 66 x 66 x 22 mm

Kit includes

• Development board with CNC metal case
• Li-Ion battery 3.7 V 800 mAh