Bello!: Digital 915MHz RF Walkie Talkie

Description

Designed a 3x3 inch, 4-layer STM32-based digital walkie-talkie that transmits synchronized audio, GPS, and sensor data via LoRa at 915 MHz. Implemented a custom data compression algorithm to achieve real-time communication with up to 1 km LOS range on ultra-low power consumption. The system uses SPI and I2C protocols with packetization featuring CRC error detection, error correction, and synchronized framing to maintain low-latency, robust communication. Definitely check out our presentation (linked PDF)! Partners: Zach Berthillier, Hailey Kim, Alex Wong