Request: Can you DX provide a program that can be installed on the SD card and directly run when inserted into the device to support large-capacity SD cards? Reason: The navigation box I bought can on...
I use an external AD to synchronously sample two signals at 256 points, and then do a 256-point fft operation in stm32 to calculate the amplitude and other parameters of the signal. The amplitude accu...
The loads used for this measurement of LMZ12002 include a wire-wound power potentiometer (at approximately 100Ω, 50Ω, and 24Ω, respectively), a 12Ω cement resistor, a 2.5Ω wire, and a 3MΩ internal res...
I made two sets of boards, both with 22.1184 crystals and the same program. Board A (9600) can be connected to all our computers, but Board B cannot be connected to an older computer (while Board A ca...