M5Stack Cardputer Mesh Kit for Meshtastic ESP32-S3 868MHz LoRa

The M5Stack Cardputer Mesh Kit for Meshtastic is a portable communication terminal that combines LoRa mesh networking with global satellite positioning. The kit consists of the Cardputer-Adv as the core controller and the Cap LoRa-1262 as the communication expansion module. The Cardputer-Adv is based on the Stamp-S3A module with ESP32-S3FN8-SoC and features a 1.14-inch LCD display with a resolution of 240 × 135 pixels as well as a compact 56-key keyboard for direct on-site input. An integrated 1750 mAh lithium battery allows for extended independent operation. For audio functions, an ES8311 audio codec, a MEMS microphone, a 1W speaker, and a 3.5mm audio jack are available. Other integrated components include a six-axis IMU BMI270, an infrared transmitter, a microSD card slot, as well as a HY2.0-4P Grove connector and an EXT-2.54-14P expansion bus. The Cap-LoRa-1262 module connects via the EXT-2.54-14P connector and operates with the SX1262 LoRa chip in the frequency range of 868 to 923 MHz with a reception sensitivity of -147 dBm and a transmission power of +22 dBm. An integrated AT6668 GNSS module supports positioning via GPS, BeiDou, GLONASS, and Galileo. The kit is delivered with pre-installed Meshtastic firmware, making it ready for immediate use without complex configuration. The development of own applications is possible via Arduino, UiFlow2, ESP-IDF, and PlatformIO. Thanks to the external RP-SMA antenna and RF shielding, the kit is particularly suitable for reliable long-distance communication outdoors.

Features:

• LoRa mesh communication in the 868–923 MHz band enables independent data transmission over long distances.
• Integrated GNSS module with support for GPS, BeiDou, GLONASS, and Galileo provides precise positioning data.
• Compact 56-key keyboard and 1.14-inch LCD display allow direct operation and information display on site.
• Pre-installed Meshtastic firmware makes the kit ready for immediate use without additional programming.
• Built-in 1750 mAh lithium battery ensures longer mobile operation without external power supply.
• Expandable via HY2.0-4P Grove connector and EXT-2.54-14P bus for connecting additional sensors and modules.

Applications:

• Establishment of a decentralized mesh network for communication during outdoor activities without cell coverage.
• Real-time GPS tracking of people or vehicles in remote areas.
• Rapid prototyping of LoRa-based IoT applications with integrated positioning.
• Knot deployment for emergency communication during natural events or field exercises.
• Position monitoring and data collection during industrial inspections outdoors.

Documentation:

• M5 Stack Wiki
• Official M5Stack Forum 

Technical Data:

• Manufacturer: M5Stack
• Manufacturer SKU: K152
• SoC: ESP32-S3FN8 @ Dual-core Xtensa LX7, up to 240 MHz
• Flash: 8 MB
• External storage: microSD
• Display: ST7789V2 @ 1.14", 240 × 135 px
• Keyboard: 56 keys (4 × 14), 160 gf actuation force
• Audio Codec: ES8311
• Amplifier: NS4150B + 8 Ω @ 1 W speaker
• Microphone: MEMS, SNR 65 dB
• IMU: BMI270 (six axes)
• Infrared: one infrared transmitter
• Expansion interfaces: HY2.0-4P + EXT 2.54-14P
• Battery capacity: 1750 mAh
• LoRa Module: SX1262
• LoRa Frequency Range: 868–923 MHz
• LoRa Transmission Power: +22 dBm
• LoRa Reception Sensitivity: -147 dBm (Low Data Rate Mode)
• LoRa Bit Rate: up to 300 kbps
• Supported Modulations: FSK / GFSK / MSK / LoRa / OOK
• LoRa Antenna: 108 × 9.3 mm, RP-SMA (female), 3 dBi gain
• GNSS Module: ATGM336H-6N @ AT6668
• GNSS Communication: UART, 115200 bps @ 8N1
• Supported GNSS Systems: GPS / QZSS / BD2 / BD3 / GAL / GLO
• GNSS Channels: 50
• GNSS Position Accuracy: < 1.5 m (CEP50)
• GNSS Update Rate: up to 10 Hz
• GNSS First Fix Time: Cold start 23 s, warm start 1 s
• Operating Temperature: 0–40 °C
• Operating Current Cardputer-Adv: DC 4.2 V @ 120.2 mA
• Operating Current Cap LoRa-1262: DC 5 V @ 163.4 mA
• Development Platforms: Arduino, UiFlow2, ESP-IDF, PlatformIO
• Product Dimensions Cardputer-Adv: 84.0 × 54.0 × 19.6 mm
• Product Dimensions Cap LoRa-1262: 84.0 × 24.0 × 15.2 mm
• Product Weight: 77.2 g
• Packaging Dimensions: 105 × 87 × 24 mm
• Gross Weight: 135 g

Contents:

• 1× M5Stack Cardputer Mesh Kit for Meshtastic ESP32-S3 868MHz LoRa
• 1× Cardputer-Adv (green back cover)
• 1× Cap LoRa-1262
• 1× LoRa rubber antenna (RP-SMA connector)
• 2× M2×4mm pan head screw
• 1× Hex key 1.5 mm (L-shape)