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SIM7600X 4G Cellular
seb edited this page 2026-03-01 00:12:52 -05:00
Table of Contents

SIM7600X 4G Cellular + GPS

Overview

Waveshare SIM7600X 4G HAT provides cellular connectivity and GPS for outdoor remote operation.

Hardware

  • Board: Waveshare SIM7600X 4G HAT
  • Module: SIMCom SIM7600A-H
  • IMEI: 868002203507276
  • FCC ID: UDV-201710
  • SIM: Nano-SIM (physical only, no eSIM)
  • Status: Already owned, needs SIM card with data plan

Specs

Parameter Value
Network LTE Cat-4 (150/50 Mbps)
Bands B2/B4/B5/B12/B13/B17/B25/B26 (North America)
GNSS GPS + GLONASS + BeiDou + Galileo
GPS Accuracy ±2.5m CEP
Interface UART + USB-to-UART
Power 5V via USB or GPIO header
Current ~200mA idle, ~500mA peak TX
Antenna u.FL (LTE) + u.FL (GNSS)

What It Enables

  1. Remote telemetry — monitor SaltyLab from anywhere over 4G
  2. Remote control — send commands when out of WiFi range
  3. GPS tracking — outdoor position, ride route logging
  4. Fallback comms — if WiFi drops during outdoor operation
  5. MQTT bridge — relay sensor data to home base over cellular

Connection to Orin Nano

  • USB cable from HAT USB port → Orin Nano USB
  • Shows as /dev/ttyUSB0-2 (3 serial ports: AT, PPP, GPS)
  • Or: GPIO header UART (pins TXD/RXD) → Orin Nano UART

SIM Card

  • Physical nano-SIM required
  • Recommended: Fido/Koodo prepaid data plan (~$15/mo)
  • Insert in slot on underside of HAT

Software Integration

  • gpsd daemon for GPS NMEA parsing
  • ROS2 saltybot_cellular package:
    • GPS → /gps/fix (sensor_msgs/NavSatFix)
    • 4G managed by NetworkManager / pppd
    • Optional: MQTT over cellular for telemetry relay

References