Briefly describe the solution: Make a simple data collection solution based on Raspberry P400, and store the data on the chain to provide traceability verification.Today we first build a blockchain se
I would like to ask why my electric bicycle is occasionally locked by the remote control. I have never locked it with the remote control. The remote control has been in a drawer and has never been use
The dry coupling ultrasonic testing method does not require the application of liquid coupling agents such as water or oil on the surface of the material to be tested. It is easy to operate and flexib
LM311 is a voltage-frequency conversion chip produced by National Semiconductor (NS). After National Semiconductor was acquired by Texas Instruments (TI), it became a product produced by Texas Instrum
In the same batch of boards, other boards can work normally, but one board cannot communicate with the processor. Reading the registers shows all zeros, and the Linux system of this board cannot find