Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller	ESP32-S3
LoRa Transceiver	SX1262
Wireless Connectivity	Wi-Fi 4 & Bluetooth 5 (BLE)
Display Type	0.5 inch OLED
PSRAM	8MB
Flash Memory	8MB
Programming Interface	USB Type-C
Battery Support	Li-Po Battery Interface
Operating Voltage	3.3V
Firmware Compatibility	Arduino, PlatformIO, Meshtastic

5 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Excellent LoRa Range

I tested this against my older ESP32 LoRa boards and the S3 v3 consistently achieves better range and stability. The USB-C connection is also a welcome upgrade.

Anonymous

Mar 05, 2026

Rating: 3/5

Battery Charging Needs Care

The board works well, but be careful with the battery input voltage. I wish there was more clear labeling on the maximum charging current supported. Functionality is good otherwise.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for Meshtastic Projects

This board works flawlessly with Meshtastic firmware. The LoRa range is impressive and the OLED display is bright enough to read outdoors. Setup was straightforward using the web flasher.

Anonymous

Feb 21, 2026

Rating: 5/5

Arduino IDE Compatible

Uploaded my first sketch within minutes. The board is recognized immediately by the IDE once the correct board manager URL is added. Very happy with this purchase.

Anonymous

Feb 13, 2026

Rating: 4/5

Great Hardware, Docs Could Be Better

The build quality is excellent and the SX1262 chip performs well. However, finding specific pinout documentation for some GPIOs took some digging. Otherwise, a solid dev board.

5 FAQ

Q: What is the maximum battery voltage supported?

A: The board supports standard single-cell Li-Po batteries, typically operating between 3.7V and 4.2V.

Q: Is there a debugging interface available?

A: Yes, the USB Type-C port provides UART debugging capabilities out of the box without needing an external programmer.

Q: Can I flash Meshtastic firmware directly?

A: Yes, this board is Meshtastic ready. You can use the web flasher or esptool to install the firmware easily.

Q: Are the GPIO pins 5V tolerant?

A: No, the ESP32-S3 operates at 3.3V logic levels. Applying 5V directly to GPIO pins may damage the board.

Q: Does this board come with an external antenna?

A: Yes, the package includes a standard LoRa antenna with an IPEX connector compatible with the board.

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