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 (64×48, 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, 64×48, SSD1306 LoRa SX1262 Antenna Specs Wi-Fi: 84mm, 2.4GHz, 3dBi gainLoRa: 108mm, 868MHz, 3dBi gain Max LoRa TX Power +22dBm Power Consumption Sleep (HY2.0-4P): 696.86µASleep (USB-C): 866.42µARX standby: 85.18mATX 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 Certificates and Compliance Documents Available certification and compliance documents for this product can be reviewed as PDF files below. 2504U03893E-EM-01 ATC-C02-EMCD Document 2504U03893E-EM-01 EN 55032 EN 55035 EN IEC 61000-3-2(A2) EN 61000-3-3 Report(CLASS B) Document 2504U03893E-EM-02 ETSI EN 301 489-1 3 17 Report Document 2504U03893E-RF EN 62311 EN 50665 SAR Assessment Report Document 2504U03893E-RF-22A ETSI EN 300 328 V2.2.2 BLE Report Document 2504U03893E-RF-22B ETSI EN 300 328 V2.2.2 2.4G Wi-Fi Report Document 2504U03893E-RF-22C ETSI EN 300 220-2 V3.2.1 Lora Report Document CE Document FCC / Declaration of Conformity Document FCC Document FCC Document FCC Document FCC Document MIC / IC Document MIC / IC Document MIC / IC Document Attachment No.1 2504U21080E-RF EUT External Photos Document Attachment No.1 2504U21080E-RF EUT External Photos Document Attachment No.1 2504U29565E-RF EUT External Photos Document Attachment No.2 2504U21080E-RF EUT Internal Photos Document Attachment No.2 2504U21080E-RF EUT Internal Photos Document Attachment No.2 2504U29565E-RF EUT Internal Photos Document Attachment No.3 2504U21080E-RF Test Photos Document Attachment No.3 2504U29565E-RF Test Photos Document Attachment of 2504U03893E EUT Photographs Document CE / MIC / IC Document FCC Document RED Document RED Document
