This weekend, Andrea and I teamed up to create a little robot named Bruce. We were able to get him to move forward (albeit in a somewhat circular pattern) by altering the starting and ending servo motor angles. We also had to compensate for the second servo motor being in a reverse position from the first. We modified the code by adding the second servo, such that for when one’s angle was 70 for example, the second would be 180-70.
components
- 2 servo motors
- a box lid
- 10 bamboo sticks
- 3 furniture pads
- 1 lobster mascot (named Bruce)
- 3 plastic spoons
- 1 ball of putty
- A lot of electrical tape
- 1 9v battery + connecter
- 1 arduino
- 1 breadboard
- several connecting wires
code
/* Sweep by BARRAGAN <http://barraganstudio.com> This example code is in the public domain. modified 8 Nov 2013 by Scott Fitzgerald http://arduino.cc/en/Tutorial/Sweep */ #include <Servo.h> Servo myservo; Servo myservo1;// create servo object to control a servo // twelve servo objects can be created on most boards int pos = 0; // variable to store the servo position int potPin = A0; void setup() { myservo.attach(9); // attaches the servo on pin 9 to the servo object myservo1.attach(10); } void loop() { for(pos = 70; pos <= 180; pos += 1) // goes from 70 degrees to 180 degrees { // in steps of 1 degree myservo.write(pos); myservo1.write(230 - pos); Serial.print(-pos); // tell servo to go to position in variable 'pos' delay(7); // waits 15ms for the servo to reach the position } for(pos = 180; pos>=70; pos-=1) // goes from 180 degrees to 70 degrees { myservo.write(pos); myservo1.write(230 - pos); // tell servo to go to position in variable 'pos' delay(7); // waits 15ms for the servo to reach the position } }
