Stroller Electric Rocker | | Battery/Wired Dual Solution (Total Cost 33-44 CNY) Baby Care Essential
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Description
Are your arms still tired from rocking your baby to sleep? This low-cost DIY project adds an 'automatic rocking' function to your stroller! The project core uses a low-noise, compact, and low-cost 'Type 7 geared motor', offering battery power (adjustable speed, portable) and wired power (most economical) as two complete solutions. You can choose freely according to your usage scenario and budget, with a total material cost between 33 CNY to 44 CNY. From procurement, assembly, to use, this guide will provide a one-stop solution.
Key Highlights:
- 💰 Extremely Low Cost: Total material cost is clear and transparent, with the battery version costing approximately 44 CNY, and the wired version only 33 CNY, making it a highly cost-effective baby care essential.
- 🔧 Dual Power Solution: Battery Version offers flexible mobility, with infinitely adjustable rocking speed using a PWM speed controller; Wired Version is plug-and-play, suitable for use near a fixed power outlet.
- 🤫 Quiet and Stable Operation: Choosing a 'Type 7' geared motor features high torque and relatively low operating noise, ensuring it won't disturb the baby.
- 📝 Ready-to-Use Guide: Provides full-process documentation from Pinduoduo procurement keywords, complete material list, cost accounting, to clear wiring diagrams, allowing beginners to easily complete it.
Actual testing shows it can rock 30 pounds of water with ease!
Material List and Cost Calculation (Based on the PDD information you provided)
| Solution | Material Name | Key Parameters | Reference Price | Quantity | Subtotal (CNY) | Purchase Keyword (PDD Search) |
|---|---|---|---|---|---|---|
| Shared | Type 7 Geared Motor | 12V Low Speed High Torque | 27.00 | 1 | 27.00 | https://mobile.yangkeduo.com/goods1.html?ps=SvKBPB4zMO |
| Battery Version | 12V Battery Pack | with DC output interface | 12.00 | 1 | 12.00 | 12V Battery Pack DC5.5 |
| PWM DC Motor Speed Controller | 12V input, with knob | 3.80 | 1 | 3.80 | https://mobile.yangkeduo.com/goods.html?ps=FDU9ZCMr3e | |
| DC Power Jack (Female) | 5.5×2.1mm | 1.00 | 1 | 1.00 | DC 5.5 * 2.1 Female Jack | |
| Wired Version | 12V Power Adapter | Output 12V 1A or more | 6.00 | 1 | 6.00 | https://mobile.yangkeduo.com/goods1.html?ps=FTwvJXzT4C |
Total Solution Cost:
Battery Version (Adjustable Speed/Portable): 27 + 12 + 3.8 + 1 = 43.8 CNY
Wired Version (Constant Speed/Economical): 27 + 6 = 33.0 CNY
- Optional 608ZZ bearing. Increases strength
- Velcro strap to secure one wheel
- *1 square M3 screw and nut—to secure the motor arm
- 2 M5×30mm screws + nuts** (for stroller frame clamp)
Note: The PWM speed controller link you provided is valid and can be directly referenced. For other materials, as links may be invalid or they are generic parts, using 'purchase keywords' for searching is more reliable.
Wiring and Assembly Instructions
- Battery Version Wiring Logic (Adjustable Speed):
- Connection order: Battery+ → DC Female Jack → PWM Speed Controller (IN+) → PWM Speed Controller (OUT+) → Motor+.
- All negative terminals (GND/-) must be connected in parallel throughout. By rotating the knob on the PWM speed controller, you can infinitely adjust the motor speed to control the rocking frequency.
- Wired Version Wiring Logic (Simplest):
- Connection order: 12V Power Adapter+ → Motor
- This solution operates at a constant speed and has the simplest structure.
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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