Update: Our engineer Alan has received a batch of components for the manipulator assemblies — including clamps and metal bracket parts. Prototype assembly is planned for the beginning of next year.
Proud to share the results of our engineering team’s recent work at Robonine:
• Together, we applied advanced topology optimization to redesign critical brackets of the manipulator, achieving a 57–76% reduction in structural deflection.
• Our updated model also demonstrated a major stress decrease — from 93 MPa down to 25 MPa — all while staying within the allowed weight increase.
• Although we didn’t fully reach the target tip deviation of 0.3 mm (best achieved: 0.41 mm), the project gave us valuable insights and a solid foundation for the next design iteration.
With Robonine team we’re preparing an in-depth review of the Feetech STS-3250 servo motor — exploring its performance, features, and potential for robotics and automation projects.
With Robonine team just completed a new article: In-depth testing of the Feetech STS3215 servomotor — the popular choice for open-source robotic projects like SO-Arm and others. We've conducted comprehensive performance analysis covering backlash, repeatability, torque characteristics, and thermal behavior. Discover how this affordable servo performs in real-world robotic applications, including its 12-bit magnetic encoder, metal gearbox design, and overload protection mechanisms.
Our engineering team has updated the connection design. We increased the folding angles of the joints to 270 degrees. The manipulator can now fold completely.
Back in August, the production cost of our prototype manipulator was estimated at ~$1600 per unit (without assembly), or ~$1000 in a 100-unit batch. Our current goal: cut prototype part costs below $800, and small-series production to around $600.
- To achieve this, we simplified the design significantly:
- Reduced degrees of freedom by one (removed forearm rotation)
- Cut required part volume by ~5×
- Lowered payload capacity from 3 kg to 1.1 kg
Robonine
Robonine
Update: Our engineer Alan has received a batch of components for the manipulator assemblies — including clamps and metal bracket parts. Prototype assembly is planned for the beginning of next year.
13 hours ago | [YT] | 3
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Robonine
We've published a comprehensive evaluation of the Feetech STS3250 servo actuator.
Key Findings:
- Speed: 77.6 RPM (exceeds spec by 3.2%)
- Backlash: 0.43° (within 0.5° limit)
- Repeatability: ±0.02mm at 95mm radius
- Peak torque: 48 kg·cm
- Sustained torque: ~25 kg·cm after thermal protection
Full review: robonine.com/feetech-sts3250-smart-actuator-evalua…
2 weeks ago | [YT] | 2
View 0 replies
Robonine
Proud to share the results of our engineering team’s recent work at Robonine:
• Together, we applied advanced topology optimization to redesign critical brackets of the manipulator, achieving a 57–76% reduction in structural deflection.
• Our updated model also demonstrated a major stress decrease — from 93 MPa down to 25 MPa — all while staying within the allowed weight increase.
• Although we didn’t fully reach the target tip deviation of 0.3 mm (best achieved: 0.41 mm), the project gave us valuable insights and a solid foundation for the next design iteration.
1 month ago (edited) | [YT] | 2
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Robonine
We've created a HEX mesh and started analyzing the model's stiffness. Our goal is to achieve a maximum displacement of 0.3 mm under full load!
#Engineering #FiniteElementAnalysis #FEM #MechanicalDesign #Innovation
1 month ago | [YT] | 1
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Robonine
With Robonine team we’re preparing an in-depth review of the Feetech STS-3250 servo motor — exploring its performance, features, and potential for robotics and automation projects.
#Feetech #STS3250 #ServoMotor #Robotics #Automation #Engineering #TechReview #Innovation #Electronics
1 month ago (edited) | [YT] | 2
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Robonine
🚀 Exciting delivery! Our new Feetech STS3250 smart servos have just arrived.
We’re getting ready to start load testing and positioning accuracy evaluation soon — stay tuned for detailed results, data, and insights.
These servos promise impressive torque and precision, and we can’t wait to see how they perform in real-world scenarios.
#robotics #servo #engineering #testing #mechatronics #automation #Feetech
2 months ago | [YT] | 1
View 0 replies
Robonine
With Robonine team just completed a new article: In-depth testing of the Feetech STS3215 servomotor — the popular choice for open-source robotic projects like SO-Arm and others. We've conducted comprehensive performance analysis covering backlash, repeatability, torque characteristics, and thermal behavior. Discover how this affordable servo performs in real-world robotic applications, including its 12-bit magnetic encoder, metal gearbox design, and overload protection mechanisms.
Link: robonine.com/testing-of-feetech-sts3215-servomotor…
#Robotics #Servomotor #EngineeringTesting #Automation #FeetechSTS3215 #OpenSourceRobotics #SOArm #RoboticSystems #ControlSystems #MotorTesting #AffordableRobotics #ClosedLoopControl
2 months ago (edited) | [YT] | 1
View 0 replies
Robonine
Our engineering team has updated the connection design.
We increased the folding angles of the joints to 270 degrees.
The manipulator can now fold completely.
#Engineering #DesignUpdate #Mechanical #Manipulator #Innovation
2 months ago | [YT] | 1
View 0 replies
Robonine
Back in August, the production cost of our prototype manipulator was estimated at ~$1600 per unit (without assembly), or ~$1000 in a 100-unit batch. Our current goal: cut prototype part costs below $800, and small-series production to around $600.
- To achieve this, we simplified the design significantly:
- Reduced degrees of freedom by one (removed forearm rotation)
- Cut required part volume by ~5×
- Lowered payload capacity from 3 kg to 1.1 kg
#Robotics #Prototyping #Manufacturing #Automation #RoboticArm #Engineering
2 months ago (edited) | [YT] | 1
View 0 replies
Robonine
Support us in Product Hunt! Waiting for your comments!
producthunt.com/products/robo9-2
@ProductHunt #robotics #robots #producthunt
4 months ago | [YT] | 1
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