如上图所示,Voltage针与Arduino模拟针A3相连,而Current针连接到Arduino模拟针A4,1602液晶显示器的电源来自于7805输出的+5 V,同时将1602其它信号针与Arduino的数字数字针相连,以4-bit模式工作,同时我们使用了一个电位计(10 k)连接到1602的 Con 针用来调节LCD的对比度。 Arduino编程部分 硬件部分讨论结束后,现在轮到...
Insert the power lugs into the loads positive lead circuit, arrow on carrier board points to load, other lug connects to power supply positive Voltage Divider 11.66 from + to A4 4.62k from A4 to Gnd Ratio 2.5238 */ int batMonPin = A4; // input pin for the voltage divider ...
The circuit based on a photoresistor uses a resistor divider to allow the high impedence Analog input to measure the voltage. These inputs do not draw almost any current, therefore by Ohm's law the voltage measured on the other end of a resistor connected to 5V is always 5V, regardless ...
The battery level jumper connects the Arduino’s analog pin 1 to a voltage divider circuit that allows you to monitor the Zumo’s battery voltage. This jumper is disconnected by default and can be connected by soldering a short length of wire between the two holes. The divider outputs a vol...
lcd.print("-Circuitdigest"); //Intro Message line 2 delay(2000);lcd.clear();} 复制代码 在主...
But if you are using a board that operates at 5V (such as an Uno) with a device that uses 3.3V, you will eventually damage the device unless you incorporate a voltage divider into the circuit to bring the voltage down. See Recipes 4.13 and 5.11 for examples of voltage dividers. On an...
The Keypad has 5 keys controlling a voltage divider circuit. The voltage detected after a key press is represented by a 10-bit (0-1023) analog to digital value on the microcontroller. Depending on the digital representation of voltage at pin A0 you can know which key is pressed....
The purpose of using a voltage divider circuit is to protect the Arduino's analog input from overvoltage. Based on the measurements, the accuracy class of the proposed device was determined. As a result of the simulations, it was determined that the absolute error of th...
If you are powering it through Vin, you can provide a DC voltage between 7 to 32 volt, which will be fed to the 7805 voltage regulator. The output of the 7805 is 5V and this 5V is fed to a voltage divider circuit which will convert it to 3.3V. ...
You now have a fully functional KISS TNC with a USB serial port. It has PTT signalling that, depending on how the circuit is configured, will work for just about any radio. Leave the cable plugged into the TNC because this is how your computer will be communicating with the TNC. ...