/diy/ - Do It Yourself

Anonymous Wed Jan 13 17:54:20 2021 No.2002680 [View]
File: 104 KB, 621x552, schematic.png [View same] [iqdb] [saucenao] [google]

Hi, I've designed a PCB that controls two valves. The PCB takes 12V and also has a USB port for serial comms that I plug my laptop into. When I connect the board to my laptop when the board is getting 12V DC it turns my laptop off. When I connect the board to my laptop when the board is not getting 12V the board will turn on and the serial comms will work fine (but of course the 12V valves will not function). What is going on here? I'm pretty new to electronics and PCB design, so sorry for the amatuerish question. Any insight appreciated. Thanks.

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/diy/ - Do It Yourself

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