M5Stack M5Stamp C6LoRa Module (ESP32-C6, SX1262)

Description

The M5Stack M5Stamp C6LoRa is a compact programmable LoRa module for 850-960 MHz long-range IoT communication. It uses an ESP32-C6 controller, an SX1262 LoRa transceiver and an LNA signal amplifier in a small SMD package for dense embedded integration.

This LoRa module supports 2.4 GHz Wi-Fi 6, external Wi-Fi and LoRa antennas through two IPEX-4 connectors, and flexible DC 3.3-5V power input. With up to +22 dBm transmit power and -148 dBm receive sensitivity, it is suited for smart agriculture, industrial monitoring and outdoor device networking.

Features

• ESP32-C6 main controller with RISC-V processor resources.
• 2.4 GHz Wi-Fi 6 for broader IoT connectivity.
• SX1262 LoRa transceiver for 850-960 MHz operation.
• Maximum LoRa transmit power of +22 dBm and receive sensitivity of -148 dBm.
• Built-in SGM13005L4 low-noise amplifier for improved reception performance.
• Compact SMD surface-mount form factor for embedded integration.
• Two IPEX-4 antenna connectors for external LoRa and Wi-Fi antennas.
• PI4IOE5V6408 IO expansion chip for LoRa circuit and amplifier enable control.
• Supports DC 3.7-5V input through BAT or DC 3.3V input through VDD_3V3.

Specifications

Applications

• Smart agriculture and irrigation control.
• Industrial monitoring and distributed sensor nodes.
• Outdoor long-range communication devices.
• Remote meter reading and power equipment control.

Product List

• 1 x Stamp C6LoRa

Other Content

Firmware Burning

• Program downloading is supported through UART or USB.
• Before downloading, hold the Boot pin (GPIO9) low and reset the module to enter download mode.
• UART downloading requires a USB-TTL adapter. USB downloading requires the Boot pin to remain low while resetting the RST pin from low level to high level.

Antenna Installation

Stamp C6LoRa uses two IPEX-4 antenna connectors. The documentation identifies separate connection positions for the LoRa antenna and the Wi-Fi antenna.

Module Power Supply

The BAT pin supports DC 3.7-5V input. Only when powering through the BAT pin must MODULE_EN be pulled high to enable power supply. No MODULE_EN operation is required when supplying DC 3.3V through VDD_3V3.

LoRa Initialization

• Reset the LoRa module by setting SX_NRST low, holding for 100 ms, then setting it high.
• Enable the RF antenna switch by setting SX_ANT_SW high.
• Enable the LNA chip by setting SX_LNA_EN high.

Resources

• Stamp C6LoRa Product Documentation
• Stamp C6LoRa Schematics PDF
• Stamp C6LoRa Model Size PDF
• Stamp C6LoRa PcbDoc Hardware Files
• Stamp C6LoRa KiCad Footprint Library
• Stamp C6LoRa Structure Files
• Stamp C6LoRa Arduino Quick Start

FAQ

What is the M5Stack M5Stamp C6LoRa used for?

It is used for compact long-range IoT communication nodes, including smart agriculture, industrial monitoring, outdoor sensors and remote meter reading.

Which wireless chips does this LoRa module use?

It combines an ESP32-C6 controller with an SX1262 LoRa transceiver and an SGM13005L4 low-noise amplifier.

What frequency range does the LoRa radio support?

The LoRa radio operates in the 850-960 MHz frequency band.

Does it include Wi-Fi?

Yes. The ESP32-C6 controller supports 2.4 GHz Wi-Fi 6.

How should the module be powered?

Use DC 3.7-5V through the BAT pin or DC 3.3V through VDD_3V3. When using BAT power, MODULE_EN must be pulled high.

Does it need external antennas?

The module provides IPEX-4 connectors for external LoRa and Wi-Fi antennas, so antenna selection and installation should match the target hardware design.