Recently, I used the stm32f407 and lan8720a chips to make an mqtt client board. mqtt uses the client version of lwIP, which is integrated with the freeRTOS and iwIP solutions of stm32cube. At the begi...
I used the routines in 430ware, but when I debugged, the values in the results array were all 0, which means they were not read. The register values were normal. I saw an error saying: cannot load fro...
[i=s]This post was last edited by annysky2012 on 2021-1-26 16:53[/i]1. Write in front
After receiving the development board yesterday, I conducted an unboxing review ( https://bbs.eeworld.com.cn/threa...
I'm begging an expert to help me analyze this circuit in detail. Some parts require waveforms (shaping circuits) and some require working principles....
PV DC fuses are safety devices used to protect PV panels, inverters, and DC loads. To ensure their safety and reliability, they must be UL248 certified.
Before applying for UL248 certifi...[Details]
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In today's busy society, people experience chronic high stress, which in turn poses a significant threat to our health. Therefore, effectively relieving stress has become a pr...[Details]