DIY | Smartphone (Bluetooth) controlled Robot Arm using Arduino | HC-05

ElectronicsisLife

10 Jan 202114:15

Summary

TLDRIn this tutorial, Vinayak from Electronics is Live guides viewers through the process of building a simple robotic arm using a kit and four servo motors. He details the assembly steps, from the middle and base parts to the gripper, and addresses a common issue with the gripper's closure. The video also covers the necessary circuitry with Arduino Nano and an HC-05 Bluetooth module, providing a schematic and main code for easy replication. Viewers are encouraged to test the robotic arm using a mobile app, available in the description, and to engage with the content through likes, shares, and comments.

Takeaways

🤖 The video is about making a simple robotic arm using a kit and servo motors.
🛠️ The presenter, Vinayak, guides viewers through the process of building the robotic arm step by step.
📚 Viewers are instructed to test all servo motors using test code to set them to a neutral position.
🔧 The servo library needs to be installed in the Arduino IDE for controlling the motors.
🔗 Links for the test code, main code, and an app are provided in the video description.
🏗️ The construction of the robotic arm is divided into making the middle part, base part, and gripper part.
🔩 Additional hardware, like a 25 mm screw, might be needed and may not be included in the kit.
🔌 The circuit is made using an Arduino Nano and an HC-05 Bluetooth module, with wiring detailed in a schematic.
🔋 A power bank can be used to power the robotic arm for testing.
📝 The main code provided in the video is commented for clarity and ease of understanding.
📱 An app is used for controlling the robotic arm, with its link available in the description.

Q & A

What is the main topic of the video?
-The main topic of the video is the construction of a simple robotic arm using a kit and servo motors.
Who is the presenter in the video?
-The presenter in the video is Vinayak from Electronics is Live.
What materials are required to build the robotic arm?
-The materials required include a kit and four servo motors, with additional components like a 25 mm screw obtained from a local hardware shop.
What software is needed to test the servo motors?
-The Arduino IDE is needed, along with the servo library which can be installed through the manage libraries option.
Where can viewers find the test code and main code for the project?
-The test code and main code can be found in the description below the video.
What issues were encountered during the building of the gripper part?
-The gripper part had difficulty closing properly, which might require cutting the gear in a specific way.
What additional components are needed to complete the robotic arm?
-Additional components include an Arduino Nano, an HC-05 Bluetooth module, and a thousand microfarad capacitor for stable power supply.
How should the circuit be made according to the video?
-The circuit should be made using the schematic provided, with the Arduino Nano and HC-05 Bluetooth module connected as shown.
What app is used for controlling the robotic arm as shown in the video?
-The specific app used for controlling the robotic arm is linked in the description below the video.
How can viewers interact with the presenter and share their thoughts?
-Viewers can like, share, subscribe, and write their thoughts and suggestions in the comments section of the video.
What is the final message from the presenter to the viewers?
-The presenter thanks the viewers for watching, bids them goodbye, and reminds them to take care until the next video.

Outlines

00:00

🛠️ Building a Simple Robotic Arm

In this segment, the video introduces the project of constructing a simple robotic arm using a kit and four servo motors. The host, Vinayak, guides viewers through the initial steps, emphasizing the need to test all servo motors with a provided test code to ensure they are functioning correctly. The process involves assembling the middle part of the arm, followed by the base, and then detailing the construction of the gripper part, which was identified as a challenging component. Links to the test code, main code, and servo library installation instructions for the Arduino IDE are provided in the video description.

05:51

🔧 Assembling and Troubleshooting the Robotic Arm

This paragraph delves into the assembly process of the robotic arm, highlighting a specific issue where the gripper was not closing properly, suggesting a solution to modify the gear. The video then moves on to attaching the middle part to the base, noting a missing 25 mm screw that had to be sourced from a local hardware shop. The shoulder and elbow servo motors are attached next, followed by the gripper part. The viewer is then guided through the circuit assembly using an Arduino Nano and an HC-05 Bluetooth module, with a schematic provided for reference. The main code for the project is detailed, with instructions to compile and upload it to the Arduino Nano. A capacitor is recommended for stable communication. The video concludes this section with a test of the robotic arm, powered by a power bank, and mentions an app used in the demonstration, with a link provided in the description.

10:56

📢 Closing Remarks and Viewer Engagement

The final paragraph of the script wraps up the video with a call to action for viewers to share their thoughts and suggestions in the comments section. It thanks the audience for watching and bids them farewell until the next video, encouraging them to like, share, and subscribe for more content. The closing is accompanied by a series of musical notes, indicating a light-hearted and engaging sign-off.

Mindmap

Keywords

💡Robotic Arm

A robotic arm is a mechanical device that mimics the function of a human arm. It is composed of joints and links that allow for a wide range of motion. In the video, the main theme revolves around constructing a simple robotic arm using a kit and servo motors. The robotic arm is a key component in various automation and electronics projects, and the script guides viewers through the process of building and testing one.

💡Servo Motors

Servo motors are a type of actuator that allows for precise control of the position of a mechanical system. They are integral to the operation of the robotic arm in the video, as they enable the arm to move and manipulate objects. The script mentions using four servo motors to create the different joints of the arm, which are tested using specific test code to ensure they function correctly.

💡Arduino IDE

The Arduino Integrated Development Environment (IDE) is a software application that allows users to write and upload code to Arduino boards. It is mentioned in the script as the platform where the servo library is installed to control the servo motors. The Arduino IDE is a crucial tool in electronics projects, facilitating the programming of microcontrollers to perform various tasks.

💡Test Code

Test code is a segment of programming code designed to verify the functionality of a component or system. In the context of the video, the test code is used to set the shaft position of the servo motors to a neutral position, ensuring they are working correctly before integrating them into the robotic arm. The script provides a link to this test code in the description.

💡Kit

A kit in the context of the video refers to a set of components and parts that are provided to build a specific project, in this case, a robotic arm. The kit mentioned in the script includes the necessary parts to construct the arm, although it is noted that a 25 mm screw was missing and had to be sourced separately.

💡Gripper Part

The gripper part of a robotic arm is the component designed to hold, grasp, or manipulate objects. The script describes the construction of the gripper in detail, noting that it was a challenging part of the build. The gripper's functionality is essential for the arm's ability to interact with its environment, and the script mentions troubleshooting issues with it not closing properly.

💡Schematic

A schematic is a symbolic representation of a system, showing the components and their interconnections without necessarily depicting the physical appearance. In the video, the schematic is used to guide the viewer through the process of wiring the circuit for the robotic arm. The script emphasizes the importance of following the schematic to ensure proper assembly and function of the arm's electronics.

💡Arduino Nano

The Arduino Nano is a small, compact microcontroller board based on the ATmega328P. It is used in the video as the central processing unit for the robotic arm. The script describes how to wire the Arduino Nano with other components, such as the servo motors and Bluetooth module, and how to upload the main code to it for controlling the arm.

💡HC-05 Bluetooth Module

The HC-05 is a Bluetooth module that allows for wireless communication between devices. In the video, it is used in conjunction with the Arduino Nano to enable remote control of the robotic arm. The script provides guidance on how to wire the HC-05 module to the Arduino and mentions its role in the overall functionality of the arm.

💡Circuit

A circuit in this context refers to the network of electrical components, such as the Arduino Nano, servo motors, and Bluetooth module, that work together to create the robotic arm's control system. The script details the process of making the circuit, which is essential for powering and controlling the arm's movements.

💡Power Bank

A power bank is a portable battery pack that can be used to supply power to devices. In the script, a power bank is suggested as a power source for testing the robotic arm. This indicates the arm's design for portability and the ease of testing its functionality with a readily available power source.

Highlights

Introduction to creating a simple robotic arm using a kit and servo motors.

Instructing viewers to test all servo motors using a provided test code for neutral shaft position.

Guidance on installing the servo library in the Arduino IDE for testing motors.

Building the middle part of the robotic arm with detailed assembly instructions.

Highlighting the difficulty in building the gripper part of the robotic arm.

Suggesting a modification to the gear to ensure the gripper closes properly.

Assembling the base part of the robotic arm with specific hardware requirements.

Mentioning the need for a 25 mm screw not included in the kit, obtained from a local hardware shop.

Attaching the shoulder and elbow servo motors to the robotic arm structure.

Detailing the process of attaching the gripper part to the robotic arm.

Using a schematic to guide the creation of the circuit with an Arduino Nano and HC-05 Bluetooth module.

Demonstrating the wiring process for the robotic arm's circuit.

Recommending the use of a thousand microfarad capacitor for stable Arduino Nano operation.

Providing the main code for the robotic arm, with instructions to compile and upload it to the Arduino Nano.

Encouraging viewers to refer to the comments in the code and the schematic for any confusion.

Invitation to test the robotic arm using a power bank and an app, with links provided in the description.

A call to action for likes, shares, subscriptions, and viewer comments for feedback and suggestions.

Closing remarks thanking viewers and signing off until the next video.