和STM32模块开发类似,集成度高 STM32方案也更经济便宜 板载 5V 1A开关电源(最高输入24V) ARDUINO开发环境 Wemos IO口 玩蜂鸣器 **VCC:**供电电压 **GND:**GND是电线接地端的简写。代表地线或0线。这个地并不是真正意义上的地,是出于应用而假设的一个地,对于电源来说,它就是一个电源的负极 Wemos同Arduino...
I half understand the Arduino Uno power select circuit that uses as p-FET to disconnect the USBVCC when an external Vin is supplied, but one bit baffles me.Ifno external supply is connected then at startup what state is the p-FET in? If the p-FET is ON (Vgs -ve) then USBVCC pow...
The easiest would be to use a capacitor to DC block the signal then bias the analog input to half VCC. BoB Likes berkeman FAQ: AC Signals in Arduino: Is It Possible? 1. What is an AC signal and how does it differ from DC signals?
The CAN bus is a bus that connects multiple units at the same time. There is theoretically no limit to the total number of units that can be connected. In practice, however, the number of units that can be connected is limited by the time delay on the bus and the electrical load. Red...
I half understand the Arduino Uno power select circuit that uses as p-FET to disconnect the USBVCC when an external Vin is supplied, but one bit baffles me. If no external supply is connected then at startup what state is the p-FET in? If the p-FET is ON (Vgs -ve) then USBVCC...
水果秤添加了一个液晶屏模块,用来显示水果蔬菜的种类以及价格。 关于液晶屏模块,采用的是LCD1602液晶屏I2C接口,如下图所示: 关于引脚的接线: GND --- 地线 VCC...样子如下图:可以显示出水果的种类以及重量,这样我们写好果蔬识别程序后就可以直接通过液晶屏显示出来。 arduino...
VCC: +5 电源 GND: 系统 / Arduino接地 TX: 将串行数据从HC-05传输到 Arduino 串行接收端口 RX: 接收来自Arduino 串行发送端口的串行数据 图2:HC-05 和Arduino Nano的接线图 图3:蓝牙和Arduino之间的连接 代码 蓝牙使用串行通信;“Serial.write(Serial.read());”连接了RX和TX引脚后,该指令将会正常运行。如...
VCC为模块供电。将其连接到任何额定为 5V 2A 的外部电源。GND是接地引脚，需要连接到Arduino的GND引脚。
Connecting Arduino pins directly to vcc In the examples below I have the switch pin connected to the button switch and also connected to a 10K resister which is connected to GND. This means the pin is being pulled LOW. The other side of the switch is connected to vcc (in this case +5V...
It has 16 pins and the first one from left to right is theGroundpin. The second pin is theVCCwhich we connect the 5 volts pin on the Arduino Board. Next is the Vo pin on which we can attach a potentiometer for controlling the contrast of the display. ...