Bidex Robot Dual Arm

low-cost human-safe robot, capable of using AI to learn basic tasks.

Ahmed Azouz

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Description

A robot arm that combines traits of human-arms and human-robot.

The arm uses innovative servo motors-driven mechanisms that make any interaction with humans safe at just 2.6 kilograms it weighs.

The robot has a wide range of applications from simple carrying to performing complex tasks that require precise manipulation characteristics and strengths of real.

Details

This Project is officially certified as open-source hardware by the Open Source Hardware Association.

BIDEX ROBOT DUAL-ARM (VERSION 1.0) by AhmedAzouz

[OSHW] SA000003 | Certified open-source hardware | oshwa.org/sa000003.html

Files

Wrist.pdf Adobe Portable Document Format - 288.18 kB - 08/31/2021 at 07:08		Preview

Gripper.pdf Adobe Portable Document Format - 52.01 kB - 08/31/2021 at 07:08		Preview

Shoulder-elbowAndBase.pdf Adobe Portable Document Format - 60.50 kB - 08/31/2021 at 07:08		Preview

Components

1 × Arduino Board UNO or any
4 × MG996 Servo motor metal gear
4 × Micro Servo SG90 metal gear preferred for high torque
1 × Servo Motor Driver I2C Module PCA9685 16-Channel 12-bit PWM

Build Instructions

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1

Design and Material

The robot was designed by Sketch Up 2017 Pro on an actual side scale of 1:1.

then I print it out using a laser cut machine on an acrylic board of 3mm thickness.

Actually, that wasn't easy to maximizing the DOF using four servo motors only, and at the same time, I had to maintain the human form for the robot.
2

Circuit
3

Gripper

I was keen to design the gripper consistent with the rest of the design and to be as humane as possible.

and It consists of Three groups of parts Thumb, palm, and fingers connected together using 5mm plastic spacers as shown.

Tip1:using plastic spacers are very effective to reduce the weight and thus increasing the torque of the motor.

* The gripper design is available to download