Neo Pixel是可寻址的LED，我们可以通过编程，让它显示任何一种颜色或者数字。 Neo Pixel有不同的smd封装，这个项目使用的是Ws2812b-5050 mini RGB。 这种迷你LED的额定电压为3.0V到5.5V，电流为16mA（每个LED）。 NodeMCU有3.3V的稳压器，可以正常驱动所有的LED。 第2步：使用Neo ...

目前ESP8266的开发方式有这几种: AT指令方式 –烧录AT的固件包，使用AT指令与ESP8266交互，执行相应指令，需与单片机相连 NodeMCU的lua开发 –烧录NodeMCU的固件包，使用Lua语言开发，使用ESP内部资源。 Arduino IDE下的开发 –相当于直接编写固件，编译之后，烧录进ESP ...

The NodeMCU development board is a powerful solution to program microcontrollers and be part of the Internet of Things (IoT). The NodeMCU development board, based on ESP8266EX, is a cute module with a ...

Blockchains claim to be public, distributed, effectively immutable ledgers. Unfortunately, they also tend to get a little bit huge – presently the Bitcoin blockchain is 194GB and Ethereum weighs in at ...

A stereo setup assumes that the listener is physically located between the speakers, that’s how it can deliver sound equally from both sides. It’s also why the receiver has a “Balance” adjustment, so ...