STM32 Triple-Port Controller PCB

I need a compact controller board built around the STM32F103CBT6 in the 48-pin LQFP package (or a pin-compatible alternative with the same Cortex-M3 core). The board must expose three independent serial... (Budget: ₹1500 - ₹12500 INR, Jobs: Arduino, Electronics, Embedded Systems, Firmware, Firmware Development, Microcontroller, PCB Layout, STM32)