Micro Servo Based Robotic Arm With Record and Play Function

Hello friends

here i have make a micro servo based robotic arm with Record & Play function

there are four micro servos are used as shoulder, knee, palm & finger

The best and interesting part of this project is it have feature to record the motion and pay it again in infinite loop unless & until you press reset or pause button, after pressing reset the all old recorded moves get erased and robot is ready for new instructions

In this inscrutable i try to cove all necessary point it is possible that i skip something or you don't understand some thing so please watch the video given below for better understanding

Step 1: Video

Step 2: Material Required

Bill of Materials: Micro Servo robotic arm
with Record & Play

4----Basic Servo Tower pro 9g

2----Header pins Male female

1----Arduino Nano

2----10kΩ Resistor resistance

4----Trimmer Potentiometer track Linear; maximum resistance 10kΩ

2----Tactile push button

1----Blank circuit board

2----Acrylic strips for Robot & potentiometer body

Step 3: Procedure

Arrange all necessary items..

Please go through the attached images and video for better understanding..

I divide whole project in two parts

1) Servo Motor assembly

2) Potentiometer assembly

1) Servo motor assembly: - Servo motor as J1, J2, J3, J4 fix the servo motors as shown in image use 3M tape to glue servo, use thin flexible plastic strip to make griper, make hole in center of each finger tie thread in that hole pass this thread from center hole and tie knot at the other end of thread with 4th servo motor’s knob, as you stretch thread finger get close vise versa. Fix whole arrangement on strong rigid base.

2) Potentiometer assembly: - Fix potentiometer as shown in figure name potentiometer as do previous R3, R4, R5, R6 this time place R6 separately for easy access this potentiometer control gripper to pick and place. Potentiometer arrangement symmetry must be same as servo arm. Fix whole arrangement on strong rigid base.

To know better how to connect potentiometer meter watch this video

Step 4: Electrical Connection

Carefully do the wiring as shown in drawing

Provide separate power supply (5V DC 1amps) to the Servo motors

Don't forget to short ground of both power source ( arduino + servo)

Step 5: Programming

Upload the attached code to the arduino

Its done your robot is ready to work

Now move potentiometer meter meanwhile record the position by pressing record button one time,

To play to the recorded moves double press the play button

Thanks for your attention

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Comments

[BhagwatD1]

Hie I am making robotic arm but two servo motor work in one potentiometer and 2 servo motor don't work how to solve this error

[tigger_jo]

Here ist the Problem:

servo_0.attach(3); // attaches the servo
servo_1.attach(10);
servo_2.attach(9);
servo_3.attach(11);

Servo 2 is on D9. In the Diagram it is on D5. Swich the 9 to a 5 and it works

[navinanand555modern]

Here i can use Arduino Uno instead of nano

[vishalreddy98]

how can i clear the saved data of potentiometers
when is connect the robo its keeps on going with the previous saved data of the potentiometer
any help plzzz....

[danielhhanson]

Are there STL files to print the Arm

[hoovdan630]

i have a question that i have been trying to figure out for a very long time. how does the arduino know when the servos have completed their moves?

[Mr innovative]

actually arduino never knows that servo complete it motion, but arduino command servo to complete its motion in given time delay, means there is time delay command after every servo moves this will ensure that servo will complete its motion with in that time...

[hoovdan630]

how does that time delay look like, where abouts is that time delay. Thanks this code is just mindblowing keep it up!!

[hoovdan630]

sorry where abouts is that time delay in the code

[laith mohamed]

Looks good ... Keep going