Do you use RC coupling? It seems to have no effect. The circuit is very simple with two op amps, as follows: The first stage is an AD8099 op amp with 10 times amplification, and then the signal is inp
The AT32WB415 series has three built-in universal synchronous/asynchronous receivers and transmitters (USART1, USART2, and USART3).
And 1 universal asynchronous receiver and transmitter (UART5). USART
Cars long for roads, flowers long for rain, souls long for salvation, hearts long for a home, and I long for a wife. I searched for her in the crowd for thousands of times, flattened the road under my