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I need an outdoor, reliable servo motor paired with a simple arm that will swing a hanging bell on command as part of my home-automation setup. The unit only has to rotate or spin freely, no incremental position or speed tuning is required. Here’s what I’m looking for: • Mechanical design: an arm long enough to swing an 8inch lever 90-100 degrees back and forth via connecting rod. • Motor selection or custom winding: torque needs to overcome the bell’s inertia (approx. 80lb), run off a 12 V DC supply and solar charger, and swing freely when idle. • Electronics: a straightforward wireless trigger input that I can later connect to a momentary pushbutton. • Deliverables: dimensioned drawings of the arm and mounts, a complete bill of materials, wiring diagram, and a short video or stills proving the mechanism rings a bell successfully on a bench test. Must be able to mount to the bell stand without drilling (hose clamps maybe). If anything in the brief is unclear—especially torque calculations, power constraints, or mounting details—let’s pin it down before you start so the first version you send me can already be function-ready.
Project ID: 40465879
2 proposals
Active 22 secs ago
Location: Rush, United States
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2 freelancers are bidding on average $275 USD for this job

Hello, I reviewed your project "Custom Home Automation Servo Arm" and immediately identified the key areas that need attention. I’m confident I can step in and deliver a clean, efficient, and production-ready solution without unnecessary delays. I bring solid, hands-on experience in Bill of Materials (BOM) Analysis, 3D Modelling, Arduino, Mechanical Design, Automation, Home Automation, 3D CAD and Electronics, and I’ve successfully handled similar projects where performance, scalability, and reliability were critical. My focus is not just to “complete the task,” but to ensure your system works smoothly under real-world conditions. What you can expect from me: • Deep expertise in Bill of Materials (BOM) Analysis, 3D Modelling, Arduino, Mechanical Design, Automation, Home Automation, 3D CAD and Electronics with practical problem-solving • Clear, fast communication with consistent progress updates • Clean, maintainable, and scalable implementation • Proactive approach — I identify and fix hidden issues, not just reported ones If I see opportunities to improve performance, UX, or stability, I’ll bring them to you with clear recommendations — no guesswork, just practical solutions. I’m ready to get started immediately and bring this across the finish line the right way. Let’s connect. Best regards, Tim Koenitzer
$250 USD in 2 days
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I understand what you want. I am very experienced mechanical/electrical engineer. I can provide you a simple solution that will require only the minimal of annual maintenance. I am available day or night, lets chat.
$300 USD in 7 days
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Buffalo, United States
Member since May 24, 2026
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