Hi, I have a 4-Channel General Purpose SPDT Relay Shield + 4 GPIO with IoT Interface
but when I connected to my 12v car, the mcp23008 goes very hot with the engine start, what can I do??
Hi, I have a 4-Channel General Purpose SPDT Relay Shield + 4 GPIO with IoT Interface
but when I connected to my 12v car, the mcp23008 goes very hot with the engine start, what can I do??
HI,
I am not sure I understand. Do you mean the MCP23008 IC itself gets hot but only while starting the car? Does it remain hot while the car is running?
Can you post a photo of how the board is wired in the car?
the MCP remain hot while the car is running.
I have no photo now, but I’m using the relays to control Acc, Ignition, A/C, and the supply for this board come from the battery’s car directly.