2 speed automatic gearboxes with less friction. 3:1, 1:1 and mixed ratios so it's like a CVT. Two ways two build it. One of them is even smaller than the original from another video. Both are more efficient and have better framing than the original.
I lead you through programming a lego ev3 brick to have remote control steering with an IR transmitter. You need the steering to return to center automatically. If you are making a Lego car or drivable robot you might need to know how to program your lego EV3 brick to control a rack and pinion steering motor with the IR controller.
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https://www.youtube.com/watch?v=tOepkPQut0Q
Lego 8 leg walker going over rough terrain. It goes through a rocky stream, down steps and faces off with a puppy.
Inspired by a four bar linkage demonstrated by DIY Walkers https://www.youtube.com/channel/UCpucV3Q9cE_PsVFcyyPDuKw
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https://www.youtube.com/watch?v=ffHUNRA8p7E
Little Lego Strand Beest and another even smaller walker. The legs on the second one I stole from Diy Walkers so check out his channel https://www.youtube.com/channel/UCpucV3Q9cE_PsVFcyyPDuKw
Tiny motors and servos
https://amzn.to/3zDApmD
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https://www.youtube.com/watch?v=QjIEB7vfrCw
One of these Lego pullers spreads the input energy out more allowing for more energy to be imparted into a spring. I learned this from Battlebots years ago so I thought I would show it to you. It could be useful for a motor driven Lego gun.
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https://www.youtube.com/watch?v=B9Ed9IMBzwY
Lego Technic Snowcat has treads that move up and down allowing the vehicle to climb crazy obstacles over 17 CM (6.75 Inches). It has seven motors 1 IR receiver and an SBrick. It has a cabin area, doors that open, shocks in the front and a winch. Sorry for the lack of snow. I live in New Mexico.
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https://www.youtube.com/watch?v=TaKpVeyvY2M
Small scale lego R/C pink Cadillac tank. These girls are mean and ready for trouble. Borrowed from my daughters Lego Model 10260 Downtown Diner and customized with tank treads and remote control. Powered with a tiny custom LIPO battery and an Sbrick. It's dimensions are only 14cmX10cmX9cm.
How to use custom LIPOs with LEGO: https://youtu.be/0EDv0chrJF0
How to add a JST battery connector to an SBrick: https://youtu.be/3JQbtcxGtfU
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https://www.youtube.com/watch?v=rcMXPFVG4I0
2 speed automatic Lego transmission this time with rubber bands instead of springs. It's still super smooth shifting. The rubber bands and wheel/string arm make it way easier to get it to work.
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https://www.youtube.com/watch?v=BDL1XozRxPQ
How I power my SBricks. Hobby LIPOs are cheaper, lighter, and more powerfull. Use a JST connector to hook up hobby LIPOs to your SBrick. Altering any product will void its warranty.
SBrick https://amzn.to/3cfeZSQ
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https://www.youtube.com/watch?v=3JQbtcxGtfU