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I am putting together a compact robotic arm that will live on a benchtop and repeatedly toggle small mechanical switches at set intervals. Every actuation has to be reliable and repeatable, so the positioning accuracy must sit in the high-precision range (fractions of a millimetre, minimal backlash). The scope is focused on the full mechatronic package: • Kinematics and structural design in CAD (SolidWorks or similar) optimised for a tight workspace. • Motor and transmission selection able to deliver consistent force without stressing the switch hardware. • Control electronics (Arduino, STM32, or equivalent) and firmware that let me feed in a schedule of press cycles over serial or Ethernet. • End-effector design shaped to reach toggles no larger than a fingertip while avoiding neighbouring components. • Repeatability test protocol and documentation proving accuracy across at least 10 000 cycles. If you have previous ROS integration or vision-guided alignment experience, let me know; it could become phase two once the core mechanical solution is validated. The dials and buttons can be different sizes and shapes so it is important for the gripper to work with unique designs. We are looking for a freelancer that has previous experience and can guide us on alternative options.
Project ID: 40680127
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42 freelancers are bidding on average $21 USD/hour for this job

Hi, I am an embedded systems engineer with over 16 years of experience developing complete mechatronic and consumer-grade products from concept through production. I have extensive experience combining precision mechanisms, motor and transmission selection, custom electronics, STM32/Arduino firmware, and PC-connected control systems. I can guide the arm architecture and alternative approaches with repeatability, minimal backlash, compact size, and safe switch force as the main design drivers. I would develop the CAD and kinematics, select suitable actuators and feedback, create interchangeable or compliant end-effectors for different dials, toggles, and buttons, and implement scheduled operation over serial or Ethernet. I can also define the 10,000-cycle validation procedure and produce clear accuracy and reliability documentation. ROS integration and vision-guided alignment can be supported in a later phase. Do you need the arm to press buttons and rotate dials as well as toggle switches? What working area, payload/force range, and target repeatability do you require? Please contact me to discuss details.
$25 USD in 30 days
7.6
7.6

Hi, This is an interesting mechatronics project and a strong match for my 10+ years of experience in embedded systems, electronics, motor control, PCB design, and automation. I can help you develop the complete solution—from kinematics and actuator selection to control electronics, firmware, and repeatability testing. I’d also look at alternatives to a traditional robotic arm if a simpler mechanism could achieve better precision and reliability. For different switch/button shapes, I would design the end-effector to be modular or interchangeable, rather than forcing one gripper to handle every geometry. I’m comfortable with Arduino/STM32, stepper/servo control, position feedback, serial/Ethernet interfaces, and automated cycle testing. I can also guide you on the mechanical architecture before committing to hardware. I’d be happy to review your workspace dimensions and switch examples and propose the most reliable approach.
$20 USD in 40 days
6.9
6.9

With my comprehensive skill set in PCB design, firmware development, and electrical engineering, I am confident that I have the expertise needed to create a high-precision switch-pressing arm that meets your specific requirements. My proficiency in designing complex, multilayer PCBs for embedded systems will ensure the stability and reliability of your arm's control electronics while allowing for smooth integration with serial or Ethernet interfaces as you mentioned. Moreover, I have significant experience in motor selection and transmission design, guaranteeing consistent force delivery without excessive stress on the hardware components. This ability combined with my skills in kinematics and structural CAD design optimisation (primarily in Solidworks) will guarantee precise positioning accuracy down to fractions of a millimeter with minimal backlash. I acknowledge that your project may require ROS integration or vision-guided alignment in the future, and even if it isn't an immediate phase in your project plan,i have experience in successfully executing such tasks. It is this versatility and breadth of experience that prove me to be an ideal candidate for your project. Let's further discuss how I can leverage my skills to deliver a tailored robotic arm solution for your benchtop switches, ensuring not only functional repeatability but also long-term usability with a variety of different-sized switches!
$25 USD in 40 days
6.9
6.9

Hello, I have extensive experience developing compact robotic mechanisms, precision actuators, custom end-effectors, and mechatronic systems where repeatability, backlash, and long-cycle reliability are critical. I’ve worked with CAD-based mechanism design, motor and transmission selection, embedded controllers, scheduled actuation, and precision fixtures for repetitive testing. I’ll develop the arm around the available workspace, switch forces, and varied button or dial geometries, with an adaptable end-effector that can reliably engage each control without disturbing adjacent components. Mechanical, electrical, and firmware elements will be coordinated together, followed by repeatability testing and cycle documentation across the required 10,000 actuations. Regards
$25 USD in 40 days
5.7
5.7

Hello, I am Muhammad Javed, a Mechanical/Mechatronics Engineer with more than 10 years of experience in mechanical design, CAD, automation, embedded control, actuator selection, and electromechanical prototyping. I can develop the complete benchtop robotic arm solution, starting with workspace and kinematic requirements and progressing through SolidWorks CAD, structural design, motors/transmissions, end-effector, electronics, and firmware. I will focus on low backlash, repeatable positioning, controlled actuation force, and a compact structure suitable for thousands of repetitive cycles. For the end-effector, I will design a practical solution capable of interacting with different button and dial sizes/shapes while minimizing interference with neighboring components. Depending on your requirements, I can evaluate alternatives such as servo/stepper drives, belt or gear reductions, compliant mechanisms, and interchangeable/custom tool tips. The controller can use Arduino, STM32, or another suitable platform, with serial/Ethernet input for programmable press schedules. I will also develop a repeatability test procedure and document positioning accuracy, actuation consistency, and performance over 10,000 cycles. I can guide you on design trade-offs and alternative approaches rather than locking into one architecture too early. ROS integration and vision-guided alignment can also be considered as a second phase after the core mechanism is validated.
$20 USD in 40 days
6.3
6.3

Hello, I’m an Electrical/Electronics Engineer with 15+ years of experience in embedded systems, STM32 firmware, PCB design, motor control, and industrial automation. Your robotic switch-actuation project matches my experience in designing reliable electromechanical systems from concept through prototype and testing. I can help develop the complete mechatronic solution, including motor/gearbox selection, actuator and transmission design, STM32/Arduino control electronics, firmware, serial/Ethernet scheduling, and a precision end-effector suitable for different button and dial shapes. For the required sub-millimetre repeatability, I would focus on mechanical rigidity, minimizing backlash, appropriate transmission selection, controlled acceleration/deceleration, homing/reference methods, and a suitable position-feedback strategy rather than relying only on step counting. I can also help evaluate alternative architectures such as stepper/servo systems, linear actuators, or compact robotic-arm mechanisms and select the most practical solution for your workspace and force requirements. The 10,000-cycle validation can include a defined repeatability test procedure, measurement criteria, failure tracking, and documentation. ROS integration and vision-guided alignment can also be considered as a future phase. Best regards, STM32 Engineer | PCB Design | Motor Control
$15 USD in 40 days
5.4
5.4

⭐⭐⭐⭐⭐ I can take this from the mechanical architecture through electronics, firmware and repeatability validation, with the main goal being reliable switch actuation over 10,000+ cycles, not just achieving positional accuracy on the first few movements. For the varying button/dial shapes, I would first evaluate whether a compliant universal end-effector, interchangeable tips, or a small adaptive gripper is the best approach. This can provide tolerance to different geometries while preventing excessive force on the switches. My design process would cover: • Kinematic/structural CAD optimized for your benchtop workspace • Low-backlash motor/transmission selection based on actual force and duty cycle • Precision homing and position feedback where beneficial • Controlled end-effector force/compliance • Arduino/STM32 motion controller and scheduled cycle firmware • Serial/Ethernet command interface • Mechanical stops and protection against missed/overtravel movements I’ll also compare alternative architectures rather than locking into a conventional 4/5-axis arm if a simpler Cartesian, SCARA-style or custom mechanism would deliver better precision and reliability for your application. To size the mechanism correctly, I’d like to know the approximate workspace, smallest/largest switch dimensions, required press/turn force, travel/rotation range and target cycle interval. From there I can recommend the most practical architecture and transmission.
$20 USD in 40 days
5.6
5.6

With a solid background in mechanical engineering and an impeccable track record of developing finely-tuned mechanisms such as yours, I believe my team at MAA CAD is the perfect fit for your project. From 3D modeling, rendering, and prototyping to DFM - it’s what we do day-in and day-out. We’re adept at understanding the nuances of high-precision machinery and have the tools to optimize your benchtop robotic arm design in software like SolidWorks or whichever you prefer. When it comes to motor and transmission selection, we prioritize finding solutions that can deliver consistent force without jeopardizing the longevity of switch hardware - a crucial aspect of your project’s success. Our experience extends to control electronics too; we have proficiency with Arduino, STM32, and more. Your vision of feeding in a schedule of press cycles over serial or Ethernet aligns with our expertise; we can meticulously design the firmware that will let you achieve just that.
$25 USD in 40 days
5.6
5.6

Hi, i already used Gazebo gym, ros2 jazzy with rviz2 to machine learning purposes. I can redesign switches to fit in custom applications like last redesign of capacitive sitch to fit in round mount in the device. I invite you to check my portfolio. Have a good day
$25 USD in 40 days
5.4
5.4

Hello, Vutuk Design and Media is an engineering design and mechatronics prototyping studio led by Ashraf Ali Shaikh, a senior mechanical design engineer with 15 years of core industry experience. Our team provides end-to-end mechanism design, Arduino control hardware integration, DFM optimization, and photorealistic 3D visual renders. To establish a clear technical roadmap for your switch pressing arm project: Do you have physical dimensions or 3D models of the target switch and testing fixture frame where the arm will be mounted? Will you require component selection for the electromechanical hardware (actuator, motor driver board, limit switches, and power supply)? Do you need a complete itemized Bill of Materials (BOM) including commercial off-the-shelf (COTS) hardware, linear bearings, and fasteners? Would you also like photorealistic 3D visual renders or animated motion simulations showing the pressing mechanism in operation for documentation or presentation? We provide simulation-verified CAD geometry, complete engineering drawing packages, 3D printing preparation, and visual presentation media. We invite you to visit our profile page to explore our studio portfolio and capabilities. Looking forward to discussing your project!
$25 USD in 40 days
5.1
5.1

I’m a Mechatronics & Robotics Engineer with 5+ years of experience in robotic arms, mechanical design, embedded control, ROS/ROS2, computer vision, and AI-based robotic manipulation. This project strongly matches my recent work: **AI-Based 6D Hex-Nut Pose Estimation by Robotic Manipulation**. In this project, I developed a vision-guided pipeline to detect a hex nut, estimate its precise 6D position and orientation from RGB-D data, and provide the pose to a robotic arm for accurate grasping and manipulation. This required careful calibration, coordinate transformations, repeatable positioning, and integration between perception and robot control. I can support: * Robot kinematics and compact CAD design * Motor/transmission selection with minimal backlash * STM32/Arduino control and scheduled actuation * Modular end-effectors for buttons, toggles and rotary dials * Force-controlled/safe switch actuation * Calibration and repeatability validation over 10,000 cycles * ROS2 and vision-guided alignment as Phase 2 I can also evaluate alternatives such as a compact SCARA, Cartesian XYZ mechanism, or articulated arm rather than committing to one architecture before analyzing the workspace, required accuracy, switch geometry, and force. My combination of **mechanical design + embedded control + precision robotic manipulation + AI vision/6D pose estimation** makes me well suited to develop and guide this project from concept through prototype validation. Best regards,
$18 USD in 40 days
4.0
4.0

Hi, I can help architect the complete mechatronic solution, with emphasis on repeatability, backlash control, motor/gearbox sizing, embedded control, and long cycle reliability. My background includes STM32/ESP32 embedded systems, motion/control electronics, BLE/Wi-Fi/Ethernet, sensor integration, and production-oriented PCB design. I would approach this as a precision positioning system rather than a conventional gripper: optimize the kinematics/transmission first, then design a compliant interchangeable end effector for different switch/button geometries. For 10000+ cycles, I’d also define repeatability, force, wear, and failure rate tests from the beginning. A few key questions: 1. What is the required press force and maximum stroke for the switches? 2. What is the available workspace/envelope for the arm? 3. What positioning repeatability do you consider acceptable (e.g. +-0.1 mm)? 4. Do you prefer a fixed end effector with interchangeable tips, or an adaptive/compliant gripper? I can also propose alternative architectures (servo/stepper, linear stages vs. articulated arm) based on the required precision and cost. Best Regards, Bohdan A.
$20 USD in 40 days
3.9
3.9

I have completed similar robotic mechanism, mechatronic product, and precision automation projects, including CAD-based mechanical design, motor/transmission selection, actuator integration, control electronics, and repeatability-focused mechanisms. I can develop your benchtop robotic arm as a complete system, with reliability and low backlash prioritized from the beginning. I’ll design the arm and end-effector around the required workspace and switch geometry, while allowing the tool to accommodate different dial and button sizes/shapes without interfering with neighboring components. I can also guide you on suitable motor, gearbox, linkage, and sensing options to achieve fractional-millimetre positioning and consistent actuation force. Deliverables: Complete mechanical CAD design in SolidWorks or similar Kinematic and structural design Motor, gearbox and transmission selection Adjustable/versatile end-effector Control electronics architecture Arduino/STM32-based controller and firmware Serial/Ethernet cycle scheduling Mechanical and electrical integration Assembly drawings and BOM Repeatability and backlash test procedure 10,000-cycle validation documentation
$15 USD in 40 days
2.7
2.7

I have 5+ years of experience in mechanical CAD, mechatronic product development, robotics, and functional mechanism design, and I can develop your compact benchtop robotic arm as a complete mechanical and control solution. Proposed Approach I’ll first define the required workspace and switch geometries, then develop the arm kinematics and structure in SolidWorks/Fusion 360 with emphasis on stiffness, compactness, low backlash and repeatable positioning. I’ll evaluate suitable servo/stepper motors, gearboxes, lead screws or other transmissions based on the required force and stroke, ensuring the mechanism can repeatedly actuate switches without damaging them. For the end effector, I’ll develop a flexible solution capable of handling different dial/button sizes and shapes, while maintaining clearance from neighboring controls. The electronics and firmware can be based on Arduino, STM32 or equivalent, with scheduled press cycles configurable through serial or Ethernet. Deliverables Complete robotic arm CAD assembly Kinematic/mechanical design Motor and transmission selection Adjustable/multi-purpose end effector Control electronics architecture Firmware for scheduled actuation Serial/Ethernet command interface Mechanical and electrical BOM Assembly documentation Repeatability test procedure 10,000-cycle validation methodology Accuracy/repeatability report Optional ROS/vision integration plan for Phase 2
$16 USD in 40 days
2.5
2.5

Hello! Bravion from Cleveland here. This precision switch-pressing robotic arm should be structured as a rigid, zero-backlash mechatronic baseline first, integrating high-accuracy kinematics, closed-loop actuation, and adaptive end-effector design. I structure benchtop robotic test systems using SolidWorks CAD for compact structural rigidity, paired with closed-loop stepper or harmonic-drive servo transmissions and STM32/Arduino microcontroller firmware communicating over serial/Ethernet. Preventing mechanical backlash, over-travel switch damage, and thermal drift across 10,000+ cycles requires incorporating compliance/force-limiting feedback, interchangeable multi-profile silicone gripper tips for varied toggle shapes, and sub-millimeter trajectory planning. The architecture will be designed with modular interfaces to allow future ROS nodes and computer-vision alignment modules to drop in seamlessly for phase two. Deliverables include the full CAD models (STEP/native), component BOM with motor and transmission sizing calculations, embedded firmware with serial scheduling commands, and a comprehensive 10,000-cycle test validation protocol. Let's make the project a success together.
$40 USD in 40 days
0.0
0.0

Hello, I would be glad to develop your high-precision switch-pressing arm as a complete mechatronic solution. I have strong experience in mechanical design, SolidWorks, robotics, actuator selection, motor control, Arduino and STM32 systems, and precision motion mechanisms. I understand that the key challenge is achieving repeatable sub-millimetre positioning with minimal backlash while safely actuating switches and buttons of different sizes and shapes. I can help select the appropriate kinematic architecture, transmission, motors, sensors, and adaptable end-effector while keeping the system compact and practical for benchtop use. The control system can be designed for scheduled press cycles through serial or Ethernet communication, with firmware structured for reliable long-duration operation. I can also develop a repeatability test procedure and documentation around the 10,000-cycle validation requirement, with options for ROS or vision-guided alignment in a later phase. ✅ What are the approximate workspace dimensions and maximum arm footprint? ✅ What pressing force and switch travel range should the mechanism support? ✅ Do you have a preferred Arduino/STM32 platform, or would you like me to recommend the most suitable controller? Best regards, Eshmum
$20 USD in 40 days
0.0
0.0

Hello, Thank you for sharing your project on the high-precision switch-pressing arm. I am an expert in mechatronic product development, and have recently delivered a compact robotic actuator for lab automation with similar repeatability and integration requirements. I understand you need a benchtop robotic arm capable of reliably toggling small mechanical switches, with precise positioning and minimal mechanical backlash, all within a confined workspace. Your emphasis on long-term repeatability, versatile end-effector design, and robust documentation aligns perfectly with my skillset. I have over 15 years of experience in electronics, robotics, and mechanical design, including numerous projects involving Arduino/STM32, motor control, custom end-effectors, and CAD modeling. My recent work has included high-cycle endurance testing and adaptive grippers for variable button sizes. Here’s how I can help: * Design a compact, high-precision arm in SolidWorks, optimized for tight spaces and minimal backlash. * Select and integrate suitable motors, transmissions, and microcontroller electronics (Arduino/STM32), ensuring consistent actuation force and gentle switch handling. * Develop flexible firmware for schedule control via serial/Ethernet, with clear protocols for customizable press cycles. * Engineer a fingertip-scale, adaptable end-effector, and provide thorough repeatability testing and documentation across 10,000+ cycles. If you are considering future ROS or vision-guided enhancements, I have direct experience integrating machine vision and ROS for precision alignment and automation. Please contact me to discuss your specific requirements and explore the best approach for your application. Thanks, Robert
$25 USD in 3 days
0.0
0.0

With over 7 years of experience in mechanical engineering, I am confident in my ability to design and build the high-precision switch-pressing arm you need for your project. Throughout my career, I have optimized robotic designs in CAD environments like SolidWorks and chosen the appropriate motors and transmissions to ensure consistent force without damaging delicate hardware such as switches. In addition to that, I have a strong background in control electronics (including Arduino and STM32) and firmware development which will prove invaluable when creating a system that allows you to feed in press cycles easily. I approach each project with a holistic mindset, ensuring all components work seamlessly together for maximum efficiency and accuracy. Given the critical nature of the project, I can also bring extensive experience in developing test protocols to validate repeatability. Through this process, I will guarantee that your switch-pressing arm performs accurately over at least 10,000 cycles. Looking ahead, my ROS integration and vision-guided alignment skills may provide valuable insights for phase two of your project. Let's collaborate and provide an innovative solution that exceeds your expectations.
$15 USD in 1 day
0.0
0.0

I am ready to design and engineer a high-precision switch-pressing arm built for smooth, repeatable, and reliable micro-actuation. Leveraging my mechanical engineering background in precision component design and custom parametric modeling, I will ensure the arm features optimal linkage geometry, low-backlash joints, and exact positional tolerances to prevent over-travel or switch damage. Whether you are driving the mechanism via a stepper, servo, or solenoid, I will deliver a lightweight, rigid design optimized for your exact manufacturing method (3D printing or CNC machining) alongside fully editable native CAD source files, STEP/STL formats, and complete mechanical assemblies ready for integration.
$20 USD in 40 days
0.0
0.0

✅ Toggle with precision, repeat with reliability. Hello, I am a mechatronics engineer with experience in benchtop robotic arms for repetitive precision tasks. I will design the full mechanical system (CAD in SolidWorks), select motors and transmissions, develop control electronics (Arduino/STM32) and firmware, and design an end‑effector capable of handling various switch shapes and sizes. I will also provide a repeatability test protocol and documentation for 10,000+ cycles. I have experience with similar projects. I am ready to start. Best regards.
$20 USD in 40 days
0.0
0.0

Branson, United States
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