I saw an LCD SPI screen for 9.9 yuan on Taobao and bought it. I found out that it was controlled by ST7735 chip. Generally, most of the ones sold on Taobao are 12864 or driven by ILI93XX, and there ar
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First of all, I would like to thank EEWorld and Didikey. It is a great honor for me to have the opportunity to participate in this competition. At the same time, I also hope that this competition will
A power supply circuit, please analyze the working principle and the role of C3, R3, C4, VT1, VR1, please help me.This content is originally created by EEWORLD forum user aacm . If you need to reprint
I would like to ask you. The situation is like this: we used a third-party open source code with some bugs, and now it has been fixed. What I want to ask is: 1. Do you modify the fixed code directly i