[i=s] This post was last edited by Tongxiaokaocode on 2018-5-6 22:19 [/i] Before this, all the 5050 lamp beads were controlled by themselves in three colors. I have never used this kind of lamp bead w
Dear experts, I want to design a switching power supply. Now I have a problem. When the voltage of 220V of the mains electricity changes to a low voltage of 12V or 20V, a transformer is needed. Are th
Since its invention in the early 1960s , the three-dimensional coordinate measuring machine ( CMM ) has been widely used in the manufacturing industry worldwide and has become the standard equipment f
Reprinted by: ouravr At present, there are about 4 kinds of STM32 development boards available online, some suitable for STM32 entry-level developers, and some suitable for engineers who develop advan
[u][color=#0000ff]This is the scene of the meeting every morning at work[/color][/u] [img]http://taobao.news.ynet.com/img.db?62741282+s(450x400)+part(0,0,450,400)[/img] Front desk: [img]http://taobao.