Keep it loose enough for the arm to rotate freely. Next, take the Triangular Junction Plate and mount the other end of the Left Middle Arm to it using M4 bolt of 16mm length and M4 Nut.Next, take the Left Middle Arm and attach it to the left Side Servo Mounting Plate using M4 bolt of 16mm length and M4 nut.Now, mount the left Side Servo Mounting Plate to the left side of the Base Servo Motor Plate using M3 bolts of length 12mm and M3 Nut.The standoffs will be on the same side as the Left Lower Arm. Make two custom standoffs of 60mm length by attaching male-to-female standoffs and female-to-female standoffs of 30mm length each and mount them on the left side Servo Mounting Plate using M3 Bolts of 8mm.Align and place the servo horn on the metal servo shaft and fix it using the servo screw.Next, attach the servo horn to the Left Lower Arm using self-threading screws.Set the servo angle to 45° as done before using the evive’s firmware.
Make sure that the servo shaft is nearer to the end. Mount another metal servo to the Side Servo Mounting Plate using M4 bolts of 16mm length and M4 nuts.Now, that the base is ready, let’s make the left side of our Smartphone-Controlled Robot With this the base of the Robotic Arm is ready, our entire robotic arm assembly will be made on it. Make sure that the Base is mounted in such a way that the servo is closer to the rear end of the base. Now, mount the other end of the standoffs to the Robotic Arm Base using M3 bolts of 8mm length.Make sure that the standoffs are aligned to outer bearing bolts. Finally, lock the servo horn to the servo shaft using the servo screw.Align the holes of the outer rings and hold them in place using four M4 bolts of 25mm length and M4 nut.Next, sandwich the Bottom Outer Bearing Disc, Bearing, two Middle Outer Bearing Disc, Top Outer Bearing Disc.Rotate the potentiometer1 of evive and set the servo angle to 90°. To set the angle, open evive’s menu and select Controls, then Servos, then Servo 1. Then, connect the Adapter and switch ON evive.For that, first, connect the Metal Servo to evive’s servo channel S1. Now, we need to set the servo angle to 90 degrees.Make sure that the servo shaft is at the center of the plate. Attach the Metal Servo to the Base Servo Motor Plate using M4 bolts of 16mm length and M4 nuts.Make sure that you attach the standoffs on the side opposite to that of the servo horn. Fasten these standoffs to the Inner Bearing Disc using M3 bolts of 8mm length.Make an 80mm custom standoff using two 30mm male to female standoffs and one 20mm female to the female standoff.Use the four holes which are closer to the center. Mount the servo horn on the Inner Bearing Disc using self-threading M2 screws found in metal servo accessories.Making the Base of the Smartphone-Controlled Robotic Arm