Arinc429 - Improved hardware

After dedicating some time to this project (Unfortunately not too much time available nowadays) I came out with a better solution for the Drivers and Receivers.

A few improvements:

• 4x TX channels with the proper trapezoidal shape and protection (Fuses), where each channel supports to be configured as Low or High speed.
• 4x RX channels with protection and analog signal conditioning. Supports both Low and High speed signals.
• Galvanic isolation has been implemented.
• The analog circuitry input voltage is 12 - 28 Vdc. The board generates the dual rail voltages needed to drive the TX channels and RX channels.
• Using STM32F407 as a real time system to run the TX Labels timetable and process RX labels.
• USB High Speed 2.0 operating as HID device (Highly reliable)
• Support for OLED display interface
• The remaining GPIOs has been exposed.
• Proper status LEDs for each channel.

The board has an approximate cost of 270 dollars (Assembly, components and PCB).