SmallS3

SmallS3 features:

• The new more integrated ESP32-S3-FH4R2 with internal 4 MB flash and internal 2 MB PSRAM.
• 32-bit 240 MHz Dual Core including an RISC-V ultra low power core.
• 2.4 GHz Wi-Fi & IEEE 802.11b/g/n, compatible with Bluetooth 5, BLE+Mesh.
• 3.3V, 700mA LDO.
• The reversing current blocking diode D2 (BAT20J) is rated at 1A with very low leakage current. Most 1A diodes have a much higher leakage current. The current for a 3.3V LDO regulator, sometimes two LDOs, has to pass through this diode. The bigger the better and lasts longer.
• 17 GPIOs.
• Standard WS2812B RGB. The RGB is turned off when it's not in use to save battery life.
• 5V power LED indicator and 5V presence detection.
• User LED.
• Whip ANT is as good as other types of ANTs for Wi-Fi communication if not better. 
• Larger RESET pushbutton does not hurt your finger.
• Breadboard friendly, the battery connector is placed on the top layer.
• Includes a set of low profile male and female headers and a 2-pin JST LiPo battery connector.
• Size: 1.25" X 0.511" or 31.75mm X 12.98mm.
• Pin spacing: X--0.1", Y--0.4"

Unique features on the SmallS3 board:

• A digital switch is added to turn off the battery level test circuit after the test is done. It will extend battery life.
• With a Low Pass Filter, the battery charge status LED does not flicker when a battery is not connected.
• Long Reset Press (LRP) to enter bootloader mode, it's simple and easy to use, press the reset button until a red LED is lit to enter bootloader mode. No need to press 2 buttons at the same time. Once you use it, you may like it.
• Pin-out is designed for connecting TFT and OLED displays without wiring on a breadboard, leaving more space for your circuits.