I'm currently building and testing the rev.4 design. In previous revisions I had some hardware errors like wrong footprint for BMP388 and mixed signal on CAN and serial ports. I hope this version does not have any major errors any more. As of now the following hardware elements are validated to work:

• All power rails
• CPU
• Both SX1280 modules
• Servo signals
• BNO055 is working on 0x28 I2C address
• BMP388 is working on 0x77 I2C address

What I still need to test:

• Battery receiver measurement
• CAN bus
• GPS port
• Extension port