[i=s]This post was last edited by lvxinn2006 on 2019-1-11 08:53[/i] [p=30, 2, left]The development board ST NUCLEO-G071RB evaluated in this event is provided by STMicroelectronics. Thanks to STMicroel...
[i=s]This post was last edited by Feixu on 2021-5-18 17:27[/i]I recently surveyed an instrument and found that the preamplifier circuit was composed of discrete components 3DJ6 and 9012, which was use...
When a call ends, the caller or the called party hangs up, and the switch sends a busy signal to the other party. After a period of time, the busy signal needs to be cancelled. How can I use a single-...
What we are involved in is the use of GPIO. You may have some impression of the demonstration of lighting an LED we talked about last time. But last time we directly called the code generated by the s...
Please help me find out what is wrong with the circuit. The speaker can play sound when it is directly connected to the voice IC, but there is no sound after it is connected to the power amplifier. Th...