RTC stands for Real Time Clock Module, which is used for tracking the correct time accurately. Now let’s explore about the components and modules involved in this project. The RTC module will keep track of time and arduino controls both the servo motors.The markings of minutes (0, 5, 10, 15…) are with 15 degree angle difference, the minute hand moves 3 degree every minute, hours hand moves 15 degree every hour pointing the correct numbers.Each hour marking is with difference of 15 degree angle and each minute is with difference of 3 degree angle. ![]() There are two motors one for hours hand and one for minute hand. The servo motors can rotate 180 degree in both directions.You will just need a couple of servo motors, an RTC module and an Arduino board of your wish, the finished project will look like the above featured image, you can add your creativity to improve the look of the clock. In this project there will be utilizing mechanical as well as electronic parts and these are readily and easily available on market. The internet is filled with circuit diagrams of digital clocks but we can hardly find any circuit diagram of analog clocks, this is because analog clocks involves mostly with mechanical parts like gears with least electronics and the mechanism of gears is a overkill for an average hobbyist. We will learn how to set time to RTC module and how to control servo motors which are essential knowledge to construct this analog clock. The constrain statement keeps the position between 0 and 180.In this post we are going to construct a cool looking analog clock using Arduino and servo motors. If it's >= 511 servo position is incremented, otherwise decremented. Then it continuously reads the analog pin. I'm still not entirely clear what the requirement is, But this version should move the Servo to 45 and delay a little, just to prove that the servo does move. Servo1.write(posServo1) // write the new mapped analog value to set the position of the servoĭelay(50) // waits for the servo to get there Here is a simpler version of your code, with the looping issue removed: #include "Servo.h" // include the servo library Servo1.write(0) // write the new mapped analog value to set the position of the servo Servo1.write(posServo1-=1) // write the new mapped analog value to set the position of the servo I made the changes to my code, but when I'm in >=511, the servo doesn't move, what should I do?įloat val = map(analogValue, 0, 1023, 0, 179) Myservo.write(val) // sets the servo position according to the scaled valueĭelay(15) // waits for the servo to get there Val = map(val, 0, 1023, 0, 179) // scale it to use it with the servo (value between 0 and 180) Val = analogRead(potpin) // reads the value of the potentiometer (value between ) Myservo.attach(9) // attaches the servo on pin 9 to the servo object Int val // variable to read the value from the analog pin Int potpin = 0 // analog pin used to connect the potentiometer Servo myservo // create servo object to control a servo Controlling a servo position using a potentiometer (variable resistor) If not, at least it would be a starting point to build on. Why don't you load the example program called Knob from the arduino IDE file/Examples/Servo/Knob because it sounds like it does exactly what you want. ![]() Your code seems really messed up in lots of places, but I'm not good a explaining it all. I also want to print out the voltage values when I connect the battery to the arduino. The pin I'm using is pin 4 and I want the servo to move, when the voltage is >= 2.5V. analogValue1 = map(analogValue, 0, 1023, 0, 179) // map the analog value (0 - 1023) to the angle of the servo (0 - 179)įloat val = map(analogValue, 0, 1023, 0.0, 5.0) // converts analogRead into a voltage between 0.0-5.0 Servo1.attach(servoPin) // attaches the servo on pin 4 to the servo object #include "Servo.h" // include the servo library This is my new code, but it still doesn't work: Servo1.write(posServo1+=1) // write the new mapped analog value to set the position of the servo ![]() Servo1.attach(servoPin) // attaches the servo on pin 9 to the servo objectĪnalogValue = analogRead(analogPin) // read the analog input (value between )ĪnalogValue1 = map(analogValue, 0, 1023, 0, 179) // map the analog value (0 - 1023) to the angle of the servo (0 - 179) Int servoPin = 4 // Control pin for servo motor Int analogValue = 0 // the value returned from the analog sensor Int analogPin = A0 // the analog pin that the sensor is on Servo servo1 // creates an instance of the servo object to control a servo This is the code I have, but it doesn't work. The servo will always be connected to 5V in the arduino and if the comparison is true the servo will start moving. I want to receive a voltage as an input and compare it to a value, and if it is >= to that value, make the servo move.
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