The creator is frustrated with using regular hedge trimmers to trim miniature boxwood plants, so they decide to make a custom tool. They use a drone brushless DC motor, an ESC (Electronic Speed Controller), and a servo control unit to create a handheld, high-speed trimmer. They shape a metal blade from a spatula and attach it to the motor shaft. However, the blade comes loose during testing, and they realize they need a better way to secure it.
The creator then uses a modified Transformer to weld the blades in place. After testing and refining the design, they create a safer, more balanced tool by adding a housing and a handle. They also add a battery and a power connection.
The final product is a high-speed, handheld trimmer that can effectively cut small branches. The creator notes that it's not a consumer product and still needs improvement, but it has potential. The video concludes with a promotion for the creator's sponsor, Brilliant.org, which offers interactive courses and quizzes for learning math, science, and programming.
Here are the key facts from the text:
1. The creator is dissatisfied with using regular hedge trimmers for trimming miniature boxwood plants.
2. They decided to create a custom tool for the task.
3. The tool requires a motor, motor driver, and blade.
4. The creator used a drone brushless DC motor for the project.
5. They used an ESC (Electronic Speed Controller) from their stash to control the motor speed.
6. The ESC requires a signal with pulses every 20 milliseconds to control the speed.
7. The creator used a cheap Servo control unit to provide the signal.
8. They connected the motor, ESC, and Servo control unit to a 12-volt power supply.
9. The creator replaced the original propeller with a metal blade made from a spatula.
10. They sharpened the blade using a sharpening tool.
11. The creator tested the tool and found it to be quite balanced.
12. However, they realized that the blades could loosen up and fly off, posing a safety risk.
13. To address this issue, the creator used a modified Transformer to weld the blades together.
14. They created a housing for the tool using a piece of metal and attached a handle to it.
15. The creator used a lead-acid battery (7.2 amp-hours) to power the tool.
16. They connected the battery to the tool using long wires and a quick connect dimple.
17. The creator tested the tool again and found it to be functional but still a bit scary to use.
18. They noted that the motor holder was made of aluminum and had developed cracks, causing the motor to shake.
19. The creator plans to replace the aluminum motor holder with a steel one.
20. The creator is not planning to make the tool a real product due to safety concerns.
21. The creator is sponsored by Brilliant.org, a platform for learning math, computing, and science interactively.
22. Brilliant.org offers thousands of lessons on various topics, including geometry, algebra, computer algorithms, and physics.
23. The creator is a fan of Brilliant.org's content and quality.
24. Viewers can try Brilliant.org for free for 30 days using the creator's link.
25. The first 200 viewers to sign up will get 20% off Brilliant.org's annual premium subscription.