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ESP32-S3-Touch-LCD-2.1B - WiFi + Bluetooth development board with 2.1'' IPS 480x480px round touchscreen - Waveshare 30697
ESP32-S3 development board with a 2.1'' round IPS touchscreen, 480 x 480 px.
- 2.5D touch glass with rounded edges and a CST820 panel
- Wi-Fi 2.4 GHz, Bluetooth 5 (LE), 8 MB PSRAM and 16 MB Flash
- QMI8658 motion sensor, RTC clock, microSD slot and buzzer
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2.1'' round touchscreen with ESP32-S3
ESP32-S3-Touch-LCD-2.1B is a development board with a round 2.1'' IPS capacitive touchscreen. The 480 x 480 px display has 2.5D glass with rounded edges. The ESP32-S3R8 combines Wi-Fi and Bluetooth 5 (LE), and 8 MB of PSRAM and 16 MB of Flash suit smooth LVGL graphics.
The board also includes a QMI8658 motion sensor, an RTC clock, a microSD card slot, a buzzer and a 3.7 V lithium battery charging circuit with a charging indicator LED. The manufacturer designed it for quickly building HMI panels, that is, interfaces for operating devices.
ESP32-S3-Touch-LCD-2.1B board with a round screen under 2.5D glass
480 x 480 px
resolution of the round IPS screen with 262k colors
240 MHz
clock speed of the dual-core Xtensa LX7 processor
8 MB + 16 MB
PSRAM and Flash for code and graphics
Wi-Fi + BLE 5
2.4 GHz wireless connectivity with an onboard antenna
Underside of the board with the microSD slot, SH1.0 connectors and two USB Type-C ports
Connectors and components on the underside
- 2 USB Type-C connectors: the native USB of the ESP32-S3 and a USB-UART port for programming
- The CH343P USB-UART converter switches the board into upload mode
- A card in the microSD slot stores files and application data, and the card is sold separately
- SH1.0 connectors: separate I2C and UART plus a 12-pin one with power, USB, I2C and UART
- The TCA9554PWR expander adds GPIO lines for controlling the board's components
The UART on the 4-pin connector works only when the USB-UART port is not connected. The I2C connector shares the bus with on-board chips, so connect only I2C devices.
Battery power and low energy consumption
You can connect a 3.7 V lithium battery to the MX1.25 connector - the board charges it and can run from it. The battery is not included, and a switch turns off battery power.
The flexible clocking and power modes of the ESP32-S3 reduce power use on battery. The PCF85063 clock has a backup battery connector, and the LDO delivers up to 800 mA.
Angled view of the board underside with SH1.0 connectors and USB Type-C ports
2.1'' round IPS screen with 2.5D glass
480 x 480 px IPS screen with I2C touch
The 2.1'' IPS display shows 262k colors with wide viewing angles. The ST7701 driver gets the image over RGB, and the CST820 touch controller works over I2C with interrupts.
To start, you get manufacturer examples for Arduino IDE and ESP-IDF, including an LVGL demo and readouts of the microSD card, RTC, QMI8658 motion sensor and battery voltage.
Is It the Right Choice for You?
A good choice if:
- You are designing a round control panel with an LVGL interface
- You need a microSD slot, an RTC clock and a motion sensor on one board
- You want to power the device from a 3.7 V lithium battery
Consider another option if:
- You want a smaller board with a 1.69'' 240 x 280 px screen: ESP32-S3-Touch-LCD-1.69
- You need a large 7'' 800 x 480 px screen for an HMI panel: Waveshare 27078
Fun Fact
262k-color screen and the RGB565 format
The board's screen displays 262k colors, but the manufacturer notes that in this product the ESP32-S3 supports only the 16-bit RGB565 format, both in hardware and in software. The image reaches the ST7701 screen driver over an RGB interface. The manufacturer also offers the same board in the ESP32-S3-Touch-LCD-2.1 version with a flat touch panel.
Source: Waveshare: ESP32-S3-Touch-LCD-2.1 documentation (wiki)
Frequently Asked Questions
How does the ESP32-S3-Touch-LCD-2.1B differ from the 2.1 version?
The 2.1B version has 2.5D touch glass with rounded edges, while the 2.1 version has a flat touch panel.
What can you program the ESP32-S3-Touch-LCD-2.1B board in?
In Arduino IDE or ESP-IDF. The manufacturer provides ready examples, including ones with LVGL.
Does the ESP32-S3-Touch-LCD-2.1B board's screen support multi-touch?
No. The manufacturer specifies single-point touch: the CST820 detects one point over I2C.
How do I prepare a microSD card to work with the board?
Format it with the FAT32 file system if the board does not recognize the card at first startup.
What's in the Box
- 1 x ESP32-S3-Touch-LCD-2.1B board
- 1 x SH1.0 12-pin cable, approx. 100 mm
- 2 x SH1.0 4-pin cable, approx. 100 mm
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Waveshare |
| Manufacturer code | ESP32-S3-Touch-LCD-2.1B (SKU 30697) |
| Microcontroller | ESP32-S3R8, 2 Xtensa LX7 cores, up to 240 MHz |
| Memory | 512 KB SRAM, 384 KB ROM, 8 MB PSRAM |
| Flash memory | 16 MB |
| Wireless connectivity | Wi-Fi 2.4 GHz 802.11 b/g/n, Bluetooth 5 (LE) |
| Antenna | onboard; IPEX1 connector after resoldering a resistor |
| Screen | round IPS 2.1'', 480 x 480 px, 262k colors |
| Screen controller | ST7701, RGB interface |
| Touch panel | capacitive, single-point, CST820 (I2C), 2.5D glass |
| Motion sensor | QMI8658, 3-axis accelerometer and 3-axis gyroscope |
| RTC clock | PCF85063, backup battery connector |
| Card slot | microSD |
| USB connectors | 2 x USB Type-C: ESP32-S3 USB and USB-UART (CH343P) |
| Additional connectors | SH1.0: 12-pin, I2C, UART |
| Power supply | USB Type-C or 3.7 V lithium battery (MX1.25) with charging |
| Buttons and switches | BOOT, RESET, battery power switch |
| Other | buzzer, power LED and charging LED |
| Programming | Arduino IDE, ESP-IDF |
| PCB diameter | 66 mm |
Useful Links
| Name | Value |
|---|---|
| Screen - type | LCD IPS |
| Screen - diagonal | 2.1 " |
| Screen - interface | RGB+I2C |
| Screen - touch | yes |
| Screen - resolution | 480x480px |
| UC - Microcontroller | ESP32-S3 |
| UC - Core | Tensilica Xtensa LX7 |
| UC - Flash | 16 MB |
| UC - RAM | 8 MB |
| UC - core | 2. Dual Core |
| UC - freq | 240 MHz |
| UC - WiFi | yes |
| UC - USB | USB C |
| UC - microSD | yes |
| UC - Bluetooth | yes |
| UC - I2C | yes |
| UC - UART | yes |
| UC - Connector | USB typ C |
| Width | 9 cm |
| Height | 9 cm |
| Depth | 3.5 cm |
| Weight | 0.07 kg |
GLS
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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