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Crafting SARA: Designing the Next-Gen Autonomous Advertising Robot


SARA, the Smart Autonomous Robotic Advertiser, is a cutting-edge robotic device that revolutionizes advertising in the digital age. Designed to capture the attention of potential customers and promote products or services, SARA combines advanced technology with innovative design elements to create a powerful marketing tool. In this blog post, we will delve into the various aspects of SARA's construction and functionality, providing a comprehensive understanding of its capabilities.


Throughout this blog post, we will explore the key features of SARA in detail, starting with its chassis and power system. We will discuss how the use of 6mm MDF wood contributes to its structural integrity and durability. Additionally, we will delve into the design process using Solidworks and laser cut machine techniques that ensure precise construction and seamless integration of components.

Furthermore, we will highlight the importance of component holders in optimizing SARA's functionality and ease of maintenance. The role of 3D printing in creating specific parts will also be explored as it allows for customization and flexibility in adapting to different advertising scenarios.


Finally, we will showcase SARA's capabilities through a captivating GIF video that demonstrates its ability to attract attention and engage with potential customers effectively.


Robot Chassis - Material Used


The chassis of SARA is designed to be sturdy and durable, ensuring that it can withstand the rigors of daily use. It is constructed using 6mm MDF wood, a material known for its strength and resilience.


The choice of 6mm MDF wood for SARA's construction was deliberate. This material provides a solid foundation for the robot, allowing it to navigate various terrains without compromising its stability. Additionally, MDF wood is relatively lightweight, making it easier for SARA to move around while carrying out its advertising functions.


To design and manufacture the chassis of SARA, advanced software such as Solidworks was utilized. Solidworks allowed for precise modeling and simulation of the robot's structure, ensuring optimal functionality and performance. Once the design was finalized, a laser cut machine was employed to cut the 6mm MDF wood into the desired shapes and dimensions.


Furthermore, component holders are strategically placed within SARA's chassis to ensure proper organization and secure placement of various electronic components. These holders prevent any potential damage or dislodging of critical parts during movement or vibrations.


Robot Chassis - Design Process with Solidworks and Laser Cut Machine


Once the design was finalized using Solidworks, it was time to bring it to life through manufacturing. This is where the laser cut machine came into play. The designers used this cutting-edge technology to transform sheets of 6mm MDF wood into precise shapes and sizes required for constructing SARA's chassis and other structural elements.

The laser cut machine utilized a high-powered diode laser to precisely cut through the wood, following the exact specifications laid out by the Solidworks design. This ensured that each piece fit together seamlessly, resulting in a sturdy and reliable framework for SARA.



Role of 3D Printing in Creating Specific Parts


The role of 3D printing in creating specific parts for SARA, the Smart Autonomous Robotic Advertiser, is crucial to its overall functionality and design. 3D printing technology has revolutionized the manufacturing process by allowing for the creation of complex and customized parts with ease.


One of the main advantages of using 3D printing in SARA's construction is the ability to create precise components that may be difficult or time-consuming to produce through traditional manufacturing methods. With a 3D printer, designers can easily translate their ideas into reality by simply designing the part on computer software and sending it to the printer for fabrication.


In the case of SARA, several specific parts are created using 3D printing technology. One such part is the camera mount, which securely holds the camera in place while allowing it to rotate and capture different angles. The camera mount needs to be both sturdy and flexible, as it plays a crucial role in SARA's ability to capture high-quality images and videos for advertising purposes. By utilizing 3D printing, designers can ensure that the camera mount meets these requirements while also being lightweight.


Another essential component that benefits from 3D printing is SARA's sensor housing. The sensor housing protects sensitive electronic components from external elements such as dust or moisture while still allowing them to function properly. However, with 3D printing, designers can quickly iterate and produce sensor housings tailored specifically to fit SARA's unique design.

Additionally, smaller parts such as brackets and connectors are also fabricated using 3D printing technology. These parts play a vital role in assembling various components together securely and efficiently. By utilizing 3D printing, designers have more flexibility in terms of design iterations and customization options.


The accompanying images provide a detailed view of the mounting brackets designed specifically for stacking the two Buck converters. This strategic design ensures optimal space utilization, allowing for the accommodation of additional components. The initial image presents the individual components prior to assembly, while the subsequent image showcases the cohesive structure post-assembly.




Mobility Provided by Caster Wheels


Caster wheels play a crucial role in providing mobility to SARA. These specially designed wheels are strategically placed on the robot's chassis, allowing it to move smoothly and efficiently in any direction. The use of caster wheels offers several benefits that enhance SARA's overall functionality.


Firstly, caster wheels enable SARA to navigate through various terrains with ease. Whether it is moving across smooth surfaces or tackling uneven terrain, these wheels provide stability and flexibility. This ensures that the robot can effortlessly maneuver around obstacles and reach its intended destination without any difficulty.


Moreover, caster wheels contribute to SARA's overall agility and responsiveness. They have low rolling resistance, which means that the robot can move swiftly without expending excessive energy or straining its power system. This allows for efficient operation and extended battery life, ensuring that SARA can perform its advertising tasks for extended periods without interruption.


The image depicted below provides an insightful view of the caster wheels, intricately paired with the BLDC (Brushless Direct Current) motors. These components play a pivotal role in the robot's design, ensuring both stability and mobility.



Results


The final assembly of SARA's chassis is showcased below. The image highlights the precise electrical connections and organized cable routing, reflecting a focus on both design integrity and functionality. For a real-time demonstration of SARA's capabilities, a video is also provided, illustrating the robot's efficient movement driven by its integrated systems.




[18/June ~ 1/July 2023]


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