作用：设置一个引脚（pin）作为GPIO时的I/O模式。 a、引脚作为PWM输出时，无需先前使用pinMode配置其模式，因为PWM本身就代表了 ...

ESP32有两种使用SD卡的方法，一种是使用SPI接口访问SD卡，另一种是使用SDMMC接口访问SD卡 。Arduino core for the ESP32中SPI方式占用4 ...

This is a useful addition to my previous article “Arduino EEPROM”. The article is still available. I have provided a link here for convenience https://www.edn.com ...

[Andrew] wonders why the SerialUSB() function on the Cortex M3-based Arduino Due is so much faster than Serial() on the Uno or Nano, and shares his observations in this short video. He sets up an ...

It is pretty well-known that I’m not a big fan of the Arduino infrastructure. Granted, these days you have more options with the pro IDE and Platform IO, for example. But the original IDE always gives ...

This is an automatic liquid vending machine based on radio-frequency identification (RFID) system. A fixed amount of liquid can be dispensed by swiping an RFID tag across the RFID reader. An ...

This is the basic circuit diagram. Wire up 2 of these circuits, one for master and one for the slave. For the connections, all we are doing here is connecting the HC05 to the Arduino. The Receiver (Rx ...

There have been 220,000 unsolved murders in the U.S. since 1980. Are serial killers to blame? Here's everything you need to know: Since 1900, there have been 3,000 identified American serial killers ...