Custom Home Automation Servo Arm

Job ID: 40465879

Budget: $250 – $750 USD

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.