i have a an stm32f417vgt6 mcu and its connected with ft800 through 30 cm SPI cable and the ft800 is driving a tft lcd .. the problem is when the mcu turn on or turn off the Contactor the mcu halt .. can you please help me how to detect the prob...
Dear @RomainR. i would like to thank you for your fast respondsthe load may defers it may be a home or a factory it may be resistive and it may be inductive but or tests is done without any load connected the high volatge is routed on the top-plane...
@S.Ma when there is no 110-250 volt the MCU doesn't halt @RomainR. the board is custom , the power source of the a MCU is a an 12 volt acid battery that goes to buck converter then through a LDO voltage regulator the relay side have Transient Vol...
yes its a relay that used to control high power, high voltage (110-250 vac) i forget to mention that the Contactor is driven by an on board Panasonic relay and its isolated from the board ,, the Contactor placed 40 cm from the board
