LOLIN S3 Mini Pro is a tiny ESP32-S3 WiFi and BLE board with a 0.85-inch display and it’s one of the first boards I’ve seen with a multi-color PCB that some PCB manufacturers have been offered recently.
The board features an ESP32-S3FH4R2 microcontroller with 4MB flash and a 2MP PSRAM, a 128×128 TFT display, a 6-axis motion/attitude sensor, and GPIO headers that make it compatible with LOLIN D1 mini shields for expansion.
LOLIN S3 Mini Pro specifications:
- SoC – Espressif Systems ESP32-S3FH4R2
- CPU – Dual-core Tensilica LX7 microcontroller @ up to 240 MHz
- Wireless – 2.4 GHz 802.11n WiFi 4 and Bluetooth 5.0 LE connectivity
- Memory – 2MB PSRAM
- Storage – 4MB SPI flash
- Display – 0.85-inch 128×128 LCD TFT display with GC9107/GC9A01 driver
- Sensor – 6-axis MEMS IMU/attitude sensor (QMI8658C)
- Expansion
- 2x 8-pin headers with up to 12x GPIO, ADC, DAC, I2C, SPI, UART, USB OTG; compatible with LOLIN D1 mini shields
- 4-pin Grove I2C connector
- Misc
- Reset button, 3x user buttons (IO0, IO47, IO48)
- RGB LED (Data: IO8, Power: IO7)
- IR receiver (IO9)
- Power Supply – 5V via USB-C port
- Dimensions – 34.3 x 25.4 mm
- Weight – 5 grams
The LOLIN S3 Mini Pro board ships preloaded with MicroPython firmware but is also compatible with Arduino. You’ll find more details on the documentation website to get started and links to schematics, mechanical files, and ESP32-S3 datasheet. All documentation is basic meaning the user will need to have some programming knowledge to use the board.
The LOLIN S3 Mini Pro can be purchased on AliExpress for $7.09 with free shipping. It’s an update to the $5 LOLIN S3 Mini with the same form factor minus the display and colorful PCB. You’ll find compatible shields on the company’s AliExpress store.
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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