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The Seed Studio XIAO ESP32-S3 is a microcontroller board based around the ESP32-S3 microcontroller. It is typically connected to a Wio-SX1262 LoRa module to enable long-range wireless communication.

• Firmware

• Power

• Issues

• References

• External links

The XIAO ESP32-S3 is supported by the official RNode firmware as of version 1.82.cite-ref-1[1] It is also supported by the microReticulum firmware as of version 1.85.10.cite-ref-2[2]

Like most other microcontroller boards, the XIAO can be powered through its USB port. It can also receive 5 V power directly through its VBUS pin, so long as a diode is placed between the power source and the pin.cite-ref-wiki-3-0[3]

It also features solder pads on the back of the board for connecting a standard 3.7 V Li-ion or LiPo battery. These pads are very small, so a soldering iron with a fine tip is required. The small size of the pads also poses the risk of short-circuiting the battery. Shorting an unprotected Lithium battery can result in a fire, so a protected battery should always be used.

When connected to 5 V power, the XIAO charges batteries at 50 mA by default. It also supports a trickle charging current of 3.8 mA.cite-ref-wiki-3-1[3]

Flashing the XIAO ESP32-S3 with RNode firmware can be inconsistent. The reset button may have to be manually pressed when the device is meant to automatically reset on its own during the flashing process. There are also different versions of the board, which may affect the flashing process. Some users have reported that flashing the device with Meshtastic's web flasher followed by an RNode flasher can occasionally solve some issues.

cite-note-11. ↑ "Release 1.82".

cite-note-22. ↑ "Release 1.85.10".

cite-note-wiki-33. ↑ "Getting Started with Seeed Studio XIAO ESP32-S3 Series".

• Seeed Studio XIAO ESP32-S3

• XIAO ESP32S3 & Wio-SX1262 Kit

• Official wiki

• Hardware repository

Manufacturer: Seeed Technology

Type: Microcontroller board

Price: US$7.49

MCU: ESP32-S3R8

CPU: Xtensa LX7 @ 240 MHz

Memory: 512 kB SRAM 8 MB PSRAM 8 MB Flash

Power source: 5 V USB Type-C 3.7 V Li-ion Battery

Dimensions: 21.0 × 17.8 mm

Open hardware?: Yes

License: CC BY-SA 4.0

Related: XIAO nRF52840

Transceiver IC: ESP32-S3R8

PHY modes: 2M, Coded

Output power: 20 dBm (100 mW)

Sensitivity: -98 dBm @ 1 Mbps

Antenna type: Shared External u.FL

Transceiver IC: ESP32-S3R8

PHY modes: IEEE 802.11b/g/n

Output power: 21 dBm (125 mW)

Sensitivity: -98 dBm @ 1 Mbps

Antenna type: Shared External u.FL