Just a note when flashing your clear board that I learned the hard way... don't use the default util/caravel_hkflash.py program from the caraval_board repo as it's A) useless for recovery if you get your board into an invalid state B) slow and overcomplicated and C) seems to sometimes throws nonsense errors in the flash validation step. /util/ftdi_flash.py from the clear repo instead is faster and allowed me to recover my board into a working state again (you may need to hold down the reset button while powering on and through flashing though.)