# remove the jumper connection from VCC_PP1 to +5V: we need +12v power supply for push-pull outputs. R309, # remove +5V pull-ups from SPI1, because we use it with +3.3v accelerometer R103, R105, # remove jumper resistor connecting BOOT1 with A22 input line, because we use STM32F4 R131, # DC-DC Inductor "L421,""MWSA0503S-100MT"",""SMD-5.2x5.4x2.8"",""C408412""" "L420,""NLV32T-2R2J-PF"",""1210"",""C89016""" # JLC stock adjustments # STM32 "U105,""STM32F429ZGT6"",""LQFP144"",""C1337111""" R430_2,