As shown in the figure, the output of the built-in DAC of STM32 is a step wave, which is amplified by the amplifier circuit to drive the piezoelectric ceramic. However, after the piezoelectric ceramic
I made a product in the lab. GPS communicates with f5529, and 5529 sends the received GPS data to GPRS. However, when communicating with GPS, f5529 always restarts uninterruptedly. I don’t know why. I
This design requires using a single-chip microcomputer or single-chip microcomputer to control DDS to generate signals of multiple frequencies, and then use a mechanical filter to receive them at the
I developed a capture program using DirectShow under wm6.5, using PIN_CATEGORY_STILL. After the program runs, I use the rear camera to capture images, and the output is normal. When I switch to the fr
I am learning to draw and program, but last time I uploaded the 18B20 and 12864 displays, someone asked me if I had C, but I programmed them myself, and I don't know how to do it, so I said I didn't h