(2)电路连接图- Circuit Connect theanode(the longer, positive leg) of your LED to digital output pin 9 on your board through a 220 ohm resistor. Connect thecathode(the shorter, negative leg) directly to ground. 连接LED阳极(长脚,正极引脚)至数字输出针脚 9,通过一个 220 欧姆电阻。 连接LED ...
请参考步骤1、步骤2或步骤3中你所选择的设计原理图。 你可以在面包板上验证到目前为止的情况,只需将一个LED/Resistor从D5连接到地,然后上传固件。如果一切正常,LED将每秒短暂地闪烁一次; 接下来,你可以添加EPaper显示屏。显示器上的数据都不会是正确的,但它应该显示一些一些数据; 然后,添加PHT模块,并验证它是否...
/*Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. The circuit: * LED attached from pin 13 to ground * pushbutton attached to pin 2 from +5V * 10K resistor attached to pin 2 from ground * Note: on most...
load_current = (load_current* MAX_VOLT) / 1024; load_current = (load_current / opamp_gain) / load_resistor; 返回负载电流; } 这用于读取负载电压。 浮动读取电压(无效){ load_voltage = 0; for (int a = 0; a <平均值; a++){ load_voltage = load_voltage + analogRead(voltage_sense); ...
Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. 点亮和熄灭连接到数字针脚 13 上的 LED, 当按下连接到针脚 2 上的按钮开关。 The circuit: 电路连接 - LED attached from pin 13 to ground through 220 ohm resistor ...
The circuit: - LED attached from pin 13 to ground - pushbutton attached to pin 2 from +5V - 10K resistor attached to pin 2 from ground - Note: on most Arduinos there is already an LED on the board attached to pin 13. created 2005 ...
To a lesser extent single colour LEDs have the same problem. A blue or green LED might need 2.8v and red and yellow LEDs turn on at approximately 1.8v. If you are running your circuit with a battery and you expect it to work right down to 1.8v then you are going to need to get ...
Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. The circuit: - LED attached from pin 13 to ground through 220 ohm resistor - pushbutton attached to pin 2 from +5V ...
// - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR.// - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS// connect GROUND (-) first, then +, then data.// - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip,...
The circuit:* LCD RS pin to digital pin 13* LCD Enable pin to digital pin 12* LCD D4 pin to digital pin 11* LCD D5 pin to digital pin 10* LCD D6 pin to digital pin 9* LCD D7 pin to digital pin 8* LCD R/W pin to ground* 10K resistor:* ends to +5V and ground* wiper...