I wrote another program for 149 to communicate with pca9685, but it doesn't work well. The response signal is detected but there is no pWM output. The program is as follows. Please give me some advice
This book systematically introduces the failure analysis technology of electronic components and typical analysis cases. The book is divided into the basic part and the case part. The basic part expla
Hongmeng Development Board Neptune ( VI ) - Source Code Compilation 3Final solution to the problemAfter a period of learning relevant knowledge and searching on the Internet, I saw this article on the
Hello, seniors. I want to make a control circuit to control the TTL level by sending codes through the network. I checked some information and it seems to be made with a network control switch. I don’
I am using TEA1062 chip to make a call circuit. I have drawn a board. After connecting the phone line, I can pick up the phone and hear the other party's voice, but it is very small. When I speak, the
For CLC and CRC filtering, it is best to use high-frequency inductors at both ends of the resistor and inductor, and then connect them to electrolytic capacitors. If both ends are electrolytic, it wil