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 10 km range on minimal 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. Partners: Zach Berthillier, Hailey Kim, Alex Wong