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 Specification Parameter SoC ESP32-C6, RISC-V 32-bit high-performance single-core processor 160 MHz + RISC-V 32-bit low-power single-core processor 20 MHz Flash 16 MB Wi-Fi 2.4 GHz Wi-Fi 6 LoRa Chip SX1262 LoRa Frequency 850-960 MHz LoRa Transmit Power / Sensitivity Maximum transmit power +22 dBm; maximum sensitivity -148 dBm Antenna Connector IPEX-4 LNA SGM13005L4 GPIO Leads 16 x GPIO (G9 / G11 / G8 / G10 / G2 / G7 / G4 / G5 / G6 / G15 / G16 / G17 / G18 / G20 / G21 / G22) + 5 x EXT_IO expansion (PI4IOE5V6408: EXT_P0-P4) Operating Power DC 3.7-5V input via BAT pin, or DC 3.3V input via VDD_3V3 pin Product Size 18.0 x 15.0 x 2.3 mm Product Weight 1.7 g Package Size 138.0 x 93.0 x 7.0 mm Gross Weight 4.5 g 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.
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