Unit C6L

SKU:U202

Description

Unit C6L is a highly integrated LoRa communication unit, equipped with the Stamp C6LoRa module (featuring ESP32-C6 as the core controller, integrating SX1262 LoRa transceiver and RF switch circuit), supporting 868 ~ 923 MHz operating frequency range. Unit C6L integrates a 0.66" OLED monochrome display, programmable RGB indicator, buzzer, and user button, providing intuitive human-machine interaction. The device supports connection to the Meshtastic network or secondary development, enabling rapid deployment of private LoRa networks, suitable for remote monitoring, outdoor exploration, and emergency communication scenarios. In hardware design, Unit C6L offers 2x SMA antenna interfaces, respectively for 2.4 GHz Wi-Fi 6 and LoRa communication, ensuring scalability and stability of wireless performance. It also integrates over-voltage protection chip AW32901FCR to enhance device stability. With HY2.0-4P expansion interface and LEGO-compatible mounting holes, users can easily expand sensors or modules to quickly build more application scenarios.

Tutorial

Arduino IDE

This tutorial explains how to program and control Unit C6L using Arduino IDE.

Features

Supports Meshtastic
ESP32-C6 core controller
2.4 GHz Wi-Fi 6
SX1262 LoRa transceiver
LoRa operating frequency: 868 ~ 923 MHz
Programmable RGB LED WS2812C
SSD1306 0.66" OLED monochrome display, resolution 64x48
Human-machine interaction:
- Buzzer
- User button
Integrated over-voltage protection chip AW32901FCR
HY2.0-4P expansion interface
LEGO-compatible mounting holes

Includes

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

Applications

Smart agriculture
Industrial monitoring
Outdoor communication

Specifications

Specification	Parameter
SoC	ESP32-C6 (RISC-V 32-bit high-performance single-core processor 160MHz + RISC-V 32-bit low-power single-core processor 20 MHz)
Flash	16MB
Display	SSD1306 0.66" OLED monochrome screen, resolution 64 x 48
LoRa	SX1262
Antenna Specs	Wi-Fi Antenna: length 84mm, SMA connector (female thread, female pin), operating frequency 2.4 GHz, gain 3dBi LoRa Antenna: length 108mm, SMA connector (female thread, female pin), operating frequency 868 MHz, gain 3dBi
Max LoRa TX Power	+22dBm
Power Consumption	Sleep mode (HY2.0-4P powered): 696.86uA Sleep mode (USB Type-C powered): 866.42uA LoRa RX standby (USB Type-C powered): 85.18mA LoRa max power continuous TX (USB Type-C powered): 80.02mA
LoRa RX Sensitivity	-147 dBm (LoRa low data rate mode)
Power Input	DC 5V (USB Type-C)
RGB LED	1x WS2812C
Product Size	62.0 x 24.0 x 8.0mm (excluding antenna)
Product Weight	13.6g (excluding antenna)
Package Size	102.0 x 43.0 x 11.5mm
Gross Weight	38.6g

Learn

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.

Schematics

1/4

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

Softwares

Arduino

Unit C6L Arduino Quick Start

PlatformIO

[env:m5stack-unitc6l]
platform = https://github.com/pioarduino/platform-espressif32/archive/refs/heads/develop.zip
board = esp32-c6-devkitc-1
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
build_flags =
    -D ARDUINO_USB_MODE=1
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DCONFIG_ARDUHAL_LOG_COLORS=1
    -DCORE_DEBUG_LEVEL=5
lib_deps =
    M5Unified=https://github.com/m5stack/M5Unified

EasyLoader

Easyloader	Download	Note
Unit C6L User Demo Easyloader	download	/

Note

Please notice that this firmware isn't the newest version, mqtt and webserver was disabled by default. This firmware is for testing whether the Unit C6L is working correctly. If you need to use Meshtastic, please go to the official website to flash the latest version of the firmware: https://flasher.meshtastic.org/

Video

Unit C6L Product Introduction and Function Demonstration