The pressure sensor we use is exactly the same as others. But when connected to the board and measured without load, the voltage is different.
Others' measurements are 0mV, but ours are around 3.5mV.
Has anyone used the SKY1311T card reader chip? I know the SPI protocol, but I don't know how to start writing it. I don't have any ideas. I hope someone can give me some advice, or if there is a sampl