Unit C6L is a highly integrated LoRa communication device, built around the Stamp C6LoRa module featuring the ESP32-C6 as its core controller. It integrates the SX1262 LoRa transceiver and RF switch circuitry, supporting a wide 868 ~ 923 MHz frequency range for robust wireless communication.

This unit comes with a 0.66″ OLED monochrome display, a programmable RGB LED, a buzzer, and a user button offering intuitive human-machine interaction.

Whether you’re connecting to the Meshtastic network or building your own LoRa-based applications, Unit C6L enables rapid deployment of private networks perfect for remote monitoring, outdoor exploration, and emergency communication scenarios.

On the hardware side, it features dual SMA antenna ports for 2.4 GHz Wi-Fi 6 and LoRa, ensuring strong and scalable wireless performance. It also includes an AW32901FCR over-voltage protection chip for enhanced stability.

With its HY2.0-4P expansion interface and LEGO-compatible mounting holes, you can easily expand with sensors or modules to build your own smart applications.

Features

• Supports Meshtastic
• ESP32-C6 RISC-V core controller
• 2.4 GHz Wi-Fi 6 support
• SX1262 LoRa transceiver
• LoRa frequency: 868 ~ 923 MHz
• Programmable RGB LED (WS2812C)
• 0.66″ OLED display (6448, SSD1306)
• Human-machine interaction:
  • Buzzer
  • User button
• Integrated AW32901FCR over-voltage protection
• HY2.0-4P expansion interface
• LEGO-compatible mounting holes

Application Scenarios

• Smart agriculture
• Industrial monitoring
• Outdoor communication

Technical Specifications

Specification	Parameter
SoC	ESP32-C6 (RISC-V 32-bit high-performance @160MHz + low-power core @20MHz)
Flash	16MB
Display	0.66″ OLED, 6448, SSD1306
LoRa	SX1262
Antenna Specs	Wi-Fi: 84mm, 2.4GHz, 3dBi gain LoRa: 108mm, 868MHz, 3dBi gain
Max LoRa TX Power	+22dBm
Power Consumption	Sleep (HY2.0-4P): 696.86A Sleep (USB-C): 866.42A RX standby: 85.18mA TX max: 80.02mA
LoRa RX Sensitivity	-147 dBm
Power Input	DC 5V (USB Type-C)
RGB LED	1 WS2812C
Product Size	62.0 24.0 8.0 mm (excluding antenna)
Product Weight	13.6g (excluding antenna)
Package Size	102.0 43.0 11.5 mm
Gross Weight	38.6g

Learn More & Documentation

View Full Documentation

Download Mode

To flash firmware, connect the device to a computer via a USB Type-C data cable, press and hold the side reset button for 3 seconds until the green light turns red. At this point, the device enters download mode and is ready for flashing.

What’s in the Box

• 1 Unit C6L
• 1 2.4 GHz SMA whip antenna
• 1 868 MHz SMA whip antenna
• 1 HY2.0-4P Grove Cable (20cm)

Schematics

• Unit C6L Schematics PDF
• Stamp C6LoRa Schematics PDF

PinMap

Stamp C6LoRa

ESP32-C6	G21	G22	G20	G23	G19	G7
SX1262	MOSI	MISO	SCK	CS	BUSY	IRQ

ESP32-C6	G8	G10	G3	ESP_RST
PI4IOE5V6408	SCL	SDA	INT	RST

PI4IOE5V6408	E0.P5	E0.P6	E0.P7
SX1262	SX_LNA_EN	SX_ANT_SW	SX_NRST

OLED

ESP32-C6	G6	G21	G20	G18	G15
SSD1306	CS	MOSI	SCK	DC	RST

HMI

ESP32-C6	G11	G2
Buzzer	BEEP
RGB LED		LED_DAT

PI4IOE5V6408	P0
SYS_KEY1	INPUT

USB

ESP32-C6	G13	G12
USB	USB_D+	USB_D-

HY2.0-4P

HY2.0-4P	Black	Red	Yellow	White
PORT.A	GND	5V	G5	G4

Model Size

• Unit C6L Model Size PDF

Datasheets

• SX1262
• ESP32-C6

Softwares

Quick Start

• Using Meshtastic via Unit C6L

Arduino

• Unit C6L Arduino Quick Start