feat: 全量同步 254 个常用的 Arduino 扩展库文件

arduino-libs/arduino-cli/libraries/VarSpeedServo/examples/Knob/Knob.ino

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+/*
+  Knob
+  Controlling a servo position using a potentiometer (variable resistor) 
+  by Michal Rinott <http://people.interaction-ivrea.it/m.rinott> 
+  Adapted by Philip van Allen <philvanallen.com> for the VarSpeedServo.h library (October 2013)
+  This example code is in the public domain
+  
+  Moves a servo to a position, determined by a scaled value from an analog input, driven by a knob (potentiometer)
+  Note that servos usually require more power than is available from the USB port - use an external power supply!
+*/
+
+#include <VarSpeedServo.h> 
+ 
+VarSpeedServo myservo;    // create servo object to control a servo 
+ 
+const int potPin = 0;    // analog pin used to connect the potentiometer
+const int servoPin = 9;  // the digital pin used for the servo
+
+int val;                 // variable to read the value from the analog pin
+ 
+ 
+void setup() {
+  myservo.attach(servoPin);  // attaches the servo on pin 9 to the servo object 
+} 
+ 
+void loop() {
+  val = analogRead(potPin);            // reads the value of the potentiometer (value between 0 and 1023) 
+  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value from 0 and 180) 
+  myservo.write(val);                  // sets the servo position according to the scaled value 
+  delay(15);                           // waits a bit before the next value is read and written 
+}