I will do uhf rfid, GSM, and gnss firmware design for embedded wireless devices

Need reliable firmware for a wireless or tracking device? I develop custom embedded firmware for UHF RFID readers/tags, GSM/cellular modules, and GNSS/GPS positioning systems built for stable communication, accurate data, and low power consumption across industrial, asset-tracking, and IoT applications.

What I offer:

• UHF RFID reader/tag firmware (read/write, anti-collision, protocol handling)
• GSM/GPRS/LTE module firmware (SMS, data transmission, remote connectivity)
• GNSS/GPS firmware (location tracking, positioning accuracy, geofencing logic)
• Combined multi-module firmware (RFID + GSM + GNSS integration on one device)
• MCU-level driver development (UART, SPI, I2C communication with modules)
• Low-power/sleep mode optimization for battery-powered devices
• Cloud/server data transmission logic (MQTT, HTTP, TCP/IP)
• Firmware debugging, testing, and optimization
• Source code documentation

Why work with me:

• Background in embedded systems and wireless communication protocols
• Focus on stable connectivity, accurate data handling, and power efficiency

Send me your module specs (RFID chipset, GSM/GNSS module model), MCU platform, and project requirements, and let's build your devices