L2930D直流馬達IC

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https://www.youtube.com/watch?v=89bqJcm ... 1%E9%81%93
開合垃圾桶
https://www.ixigua.com/7149894431985336 ... 66c8a8611f
555 PWM
https://cocdig.com/docs/show-post-1816.html
反覆齒輪
https://www.youtube.com/watch?v=zae2ZeP ... aldWalters

https://www.youtube.com/watch?v=YcXIIwVFkn4&t=82s 反覆servo

Schematic_Servo Controller_2021-05-31 (1).pdf

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https://www.youtube.com/watch?v=J-QO7jQGfoE
https://www.youtube.com/watch?v=xWG__k418_A
https://www.youtube.com/watch?v=gmGuvx7Dmmo