STM32-Based 5G IoT Multi-Sensor GPS Tracking Device Development
Budget: $30 – $250 USD
We are seeking an experienced embedded systems engineer or IoT hardware developer to design and develop a low-cost, modular STM32-based IoT device for advanced asset tracking and environmental monitoring.
The device should include multi-sensor data collection, 5G connectivity, full GPS tracking, and many features.
Develop a reliable, battery-powered IoT device capable of:
Real-time GPS tracking
Environmental monitoring
Motion and tilt detection
5G data transmission
Remote configuration & OTA updates
Minimum 20-day battery life
MCU
STM32 (low-power series preferred: STM32L / STM32U)
Secure boot support
External flash for data logging
Connectivity
5G cellular modem (LTE fallback acceptable if justified)
Nano SIM or eSIM support
WiFi (2.4 GHz minimum)
Bluetooth BLE 5.0+
GNSS (GPS + GLONASS preferred)
Sensors
Internal temperature sensor
External thermocouple support
Humidity sensor
Pressure sensor
3-axis accelerometer
Tilt detection
Motion detection
Shock/vibration detection
Battery level monitoring
Power
Rechargeable battery
Minimum 20 days operation per charge
Ultra-low power sleep modes
Motion-based wake-up
Battery health monitoring
Advanced Tracking Features
Device must support:
Real-time GPS tracking
Geofencing (multiple zones)
Location history logging
Movement-based tracking intervals
Tamper detection
Impact detection
Speed alerts
Idle alerts
Temperature threshold alerts
Data buffering when offline
Heartbeat/status reporting
Secure TLS communication
Remote configuration
OTA firmware updates
Firmware Requirements
Modular and scalable architecture
FreeRTOS (preferred)
OTA firmware update capability
Secure bootloader
Remote configuration of:
Reporting intervals
Sensor thresholds
Alert settings
Well-documented source code
Git repository delivery
Designed for future feature expansion
Communication Protocols
MQTT over TLS
HTTPS REST API
JSON-based payload
Cloud-ready (AWS IoT / Azure IoT compatible)
Hardware Design Expectations
Low BOM cost
Production-ready PCB design
Modular sensor expansion capability
Compact industrial enclosure
Designed for manufacturability (DFM)
Option for external antenna
Deliverables
Complete schematic & PCB files
Optimized BOM with cost breakdown
Fully functional firmware source code
Secure bootloader + OTA implementation
Prototype units (if part of agreement)
Technical documentation
Testing & validation report
The device should include multi-sensor data collection, 5G connectivity, full GPS tracking, and many features.
Develop a reliable, battery-powered IoT device capable of:
Real-time GPS tracking
Environmental monitoring
Motion and tilt detection
5G data transmission
Remote configuration & OTA updates
Minimum 20-day battery life
MCU
STM32 (low-power series preferred: STM32L / STM32U)
Secure boot support
External flash for data logging
Connectivity
5G cellular modem (LTE fallback acceptable if justified)
Nano SIM or eSIM support
WiFi (2.4 GHz minimum)
Bluetooth BLE 5.0+
GNSS (GPS + GLONASS preferred)
Sensors
Internal temperature sensor
External thermocouple support
Humidity sensor
Pressure sensor
3-axis accelerometer
Tilt detection
Motion detection
Shock/vibration detection
Battery level monitoring
Power
Rechargeable battery
Minimum 20 days operation per charge
Ultra-low power sleep modes
Motion-based wake-up
Battery health monitoring
Advanced Tracking Features
Device must support:
Real-time GPS tracking
Geofencing (multiple zones)
Location history logging
Movement-based tracking intervals
Tamper detection
Impact detection
Speed alerts
Idle alerts
Temperature threshold alerts
Data buffering when offline
Heartbeat/status reporting
Secure TLS communication
Remote configuration
OTA firmware updates
Firmware Requirements
Modular and scalable architecture
FreeRTOS (preferred)
OTA firmware update capability
Secure bootloader
Remote configuration of:
Reporting intervals
Sensor thresholds
Alert settings
Well-documented source code
Git repository delivery
Designed for future feature expansion
Communication Protocols
MQTT over TLS
HTTPS REST API
JSON-based payload
Cloud-ready (AWS IoT / Azure IoT compatible)
Hardware Design Expectations
Low BOM cost
Production-ready PCB design
Modular sensor expansion capability
Compact industrial enclosure
Designed for manufacturability (DFM)
Option for external antenna
Deliverables
Complete schematic & PCB files
Optimized BOM with cost breakdown
Fully functional firmware source code
Secure bootloader + OTA implementation
Prototype units (if part of agreement)
Technical documentation
Testing & validation report