Egg Device & Docking Prototype
Budget: £20 – £250 GBP
I’m building a palm-sized, egg-inspired enclosure that houses an ESP32-C3, Li-Po cell, charger circuit, voltage regulators, EEPROM and a small buzzer. Its main job is health-oriented haptic feedback, so the mechanical design must prioritise a reliable vibration alert and keep weight centred. The shell should be mould-ready plastic, charged through bottom pogo pins, with one subtly flattened face to give it a clear “forward” direction. It may need internal magnets to hold it in place while charging, depending on the other design points.
Alongside it I need an equally organic-looking dock that holds and re-charges two eggs at once. Inside the dock will sit a larger Li-Po, its own charger, an extra ESP32 running native Bluetooth and ESP-Now, plus wiring to drive the two device buzzers. Externally the dock offers:
• two pogo-pin wells that guide each egg into place,
• a USB-C port for mains charging,
• a 3-pin connector (or similar) that lets me feed an LED strip.
What I need from you
1. Concept sketches and quick CAD mock-ups so we can lock down proportions, surface curvature and placement of the flattened face.
2. Final parametric CAD files (SolidWorks, Fusion 360 or similar) for both the egg and dock, including all internal standoffs, screw posts and cable routes.
3. 3D-printed, working prototypes: one shell that snaps around my electronics, plus a dock that charges two units via pogo pins and routes power to the LED lead. You can print in PLA or PET-G for speed; surface finish is secondary at this stage.
4. Assembly notes and a short bill of materials for any hardware you add (pins, screws, magnets).
Acceptance criteria
• Eggs seat firmly in the dock and begin charging on first try.
• Vibration alert remains crisp and audible with shell closed.
• USB-C input powers both the dock electronics and the two charging bays simultaneously.
• All files delivered in native CAD plus STEP for hand-off.
If this sounds like a project you can bring from sketch to first article, let’s discuss timing and any early constraints you foresee.
Alongside it I need an equally organic-looking dock that holds and re-charges two eggs at once. Inside the dock will sit a larger Li-Po, its own charger, an extra ESP32 running native Bluetooth and ESP-Now, plus wiring to drive the two device buzzers. Externally the dock offers:
• two pogo-pin wells that guide each egg into place,
• a USB-C port for mains charging,
• a 3-pin connector (or similar) that lets me feed an LED strip.
What I need from you
1. Concept sketches and quick CAD mock-ups so we can lock down proportions, surface curvature and placement of the flattened face.
2. Final parametric CAD files (SolidWorks, Fusion 360 or similar) for both the egg and dock, including all internal standoffs, screw posts and cable routes.
3. 3D-printed, working prototypes: one shell that snaps around my electronics, plus a dock that charges two units via pogo pins and routes power to the LED lead. You can print in PLA or PET-G for speed; surface finish is secondary at this stage.
4. Assembly notes and a short bill of materials for any hardware you add (pins, screws, magnets).
Acceptance criteria
• Eggs seat firmly in the dock and begin charging on first try.
• Vibration alert remains crisp and audible with shell closed.
• USB-C input powers both the dock electronics and the two charging bays simultaneously.
• All files delivered in native CAD plus STEP for hand-off.
If this sounds like a project you can bring from sketch to first article, let’s discuss timing and any early constraints you foresee.