LOLIN S3 Pro is a WiFi & Bluetooth LE IoT board built around the ESP32-S3-WROOM-1 modules with various I/Os including a display port, a microSD card slot, and a LOLIN I2C connector.
The wireless module ships with 16MB QSPI flash and 8MB PSRAM, and the board also features two 16-pin headers with ADC, DAC, I2C, SPI, UART, etc…, a USB Type-C port, and support for a LiPo batteries with 500mA charging.
LOLIN S3 Pro specifications:
- Wireless module – ESP32-S3-WROOM-1 module with:
- Espressif Systems ESP32-S3 dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration, 512KB RAM, 2.4 GHz WiFi 4 and Bluetooth 5.0 LE with support for long-range, up to 2Mbps data rate, mesh networking
- 16MB QSPI flash
- 8MB PSRAM
- PCB antenna
- Storage – MicroSD card socket
- Display I/F – Display port for “TFT and EPD” displays
- USB – 1x USB Type-C port
- Expansion
- 2x 16-pin headers with up to 25x GPIO, up to 17x ADC, DAC, SPI, UART, I2C, Reset, VIN, 3.3V, and GND
- 1x LOLIN I2C Port
- Misc – Reset button, user button (IO0), battery charging LED
- Power Supply
- 5V via USB Type-C port
- 2.0mm connector for LiPo battery plus battery charging circuit based on TP4054 chip.
- MicrOne ME6211 LDO
- Dimensions – 65.3 x 25.4 mm
- Weight – 7.2 grams
As its name implies, the “Pro” board is an adaption of the LOLIN S3 board released this summer with the same ESP32-S3-WROOM-1 module, but only one USB port, and the addition of a display connector, a MicroSD card, and support for LiPo batteries with charging. The rest of the design is pretty similar except for fewer I/O on the headers and the RGB LED is gone.
You’ll find the schematics (PDF) and very basic instructions to get started with MicroPython and Arduino in the wiki, but there’s no sample code to use the new features such as the battery, the display, and MicroSD card, so you’d be on your own to figure that out. What’s even more surprising is that the company did not list any recommended display that works with their 10-pin display connector which appears to be the same as found on the Wemos LOLIN D32 Pro board introduced in 2018… That should mean the company’s 2.4-inch TFT display ($12) together with the 10-pin cable ($0.80) should work.
The LOLIN S3 Pro board itself is sold on Aliexpress for $9.50 plus shipping.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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