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Easy to build mini car with Battery-Holder case and motor, as also self-made propeller
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In our last projects WE were using electronics, which is a bit more for teens up from 10 years. WE will now also create some projects where the younger ones can tinker around as well under the surveillance and guidance of coaches. Boys as well as girls like motors and cars, so WHY NOT trying to tinker a bit around with small motors. WE will use this time a battery-holder for 3 Volts (2 x 1.5 Volts AA batteries, or accumulators [BETTER]) where we fix the motor and the wheels of OUR car on it.
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To make the propeller WE will use the top of a plastic bottle as it is very easy to tinker with plastic, as well as the propeller could get unscrewed and replaced by another one because of the cap. The cap will get mounted on the motor shaft and fixed with hot glue..
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Check the video below please, We will use TYPE-3:
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TYP: I used a hair dryer to heat the plastic and whiles heating I pushed down the propeller till it was (nearly) flat-bottomed. WHEN NOT flat-bottomed the propeller will be more as an unbalance as doing its affect as air propulsion! The mini car will jump as crazy then around; believe me I made the experience 😉
Learn more:
- http://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=Ideas+for+makerspaces
- http://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=Ideas+for+makerspaces&tag=Propeller
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The components and how to fix everything
Please find below the components:
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First step is to prepare the wheels: the 8 caps on the right-hand side in above photo must get drilled in the middle with the same diameter as the wooden sticks you use; OR as I did by using the solder iron. Next step is to glue together 2 caps with hot glue as shown in photo below.
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Cut now the drinking straws and the wooden sticks to the measure as indicated in photo below and fix the drinking straws with hot glue.
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Pass the wooden shafts through the drinking straws and the drilled holes in the caps and fix them with hot glue.
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Prepare a piece of drinking straw from 3,5 cm and glue it on the upper side of the battery holder with hot glue, as shown in above photo. Pass through the cables of the battery holder and fix the motor with hot glue, as shown in above photo. Cut the cables to the right length and solder them on the motor.
That’s it, ONLY a bit work and a lot of fun once running; check the video below to see it in action please 😉 AWARENESS: the propeller is turning with high speed and there are sharp ends!!! DON’T touch the propeller whiles in action!!! DON’T let run the mini car WHERE persons, children and pets are around as they could get hurt by the propeller, as you can’t control the direction of the mini car!!!
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Detailed parts list, supplier and prices
Please find below the detailed parts list as well as the supplier and the prices.
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Item and quantity |
Supplier and order number |
Price |
1 x drinking straw | 0,10€ | |
1 x Sourcingmap Propeller mit Motor mit hohem Drehmoment
für Modellflugzeug, 1500–10000 RPM, 3–12 V Gleichstrom |
AMAZON | 6,28€ |
1 x Bambussplittstäbe FloraSelf® 50 cm, 20 Stk | HORNBACH: 7531902 | 1,79 € |
1 x Battery Holder case with switch (2 x AA) | CONRAD: 1318437-62 | 2,59 € |
2 x Batteries AA à 4,49 / 2 = 2,25 € | CONRAD: 658023-62 | 2,25 € |
Total: | 13,01 € |
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As you can see it is a very cheap project, ONLY 13, 01 € and easy to realize! ALL what YOU need is a bit time, passion and here we GO! 😉 Have FUN!
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The tools needed
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The video of our project
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The author Gust MEES is ICT Course Instructor, ”Member of the Advisory Board” from “Luxembourg Safer Internet” (LuSI), BEESECURE, Official Partner (Consultant) from the Ministry of Education in Luxembourg, project “MySecureIT“, Official Partner from the Ministry of Commerce in Luxembourg, project “CASES” (Cyberworld Awareness and Security Enhancement Structure). The author was also a winner of an electronics contest (Germanic countries) in 1979 and got his project published in the “Electronics Magazine ELO”). |
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Stay tuned for next blog post(s) 😉..
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Keywords necessary for me to create this blog post: drinking straw, hot glue, motor, battery holder 2 x AA, empty FANTA plastic bottle, screwable caps from plastic bottles (CONTREX),
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