How to use a Robot Inventor motor as a Force Touch Sensor

[@rozakd]

Love the idea and the trouble-shooting. Nice tutorial.

[@jirkainstyle246]

I trying find video how to do it and I finally find it thanks

[@legohouse3177]

Anton 👍 great Idea 🦄🦄🦄

[@teleplai2100]

Great video, Anton. Thanks for the idea. So it’s OK to manually move mindstorms motors when they’re connected to a hub and powered on, then?

[@AntonsMindstorms]

Yes. Electrically there is no problem. Be careful with really excessive force (hitting it real hard), however, because the internal gear is still made from plastic.

[@turinreza]

@@AntonsMindstorms can the spike prime force sensor work in robot inventor app?

[@AntonsMindstorms]

@@turinreza Good question. I'll try.

[@seyoftime9999]

great video

[@AntonsMindstorms]

Glad you enjoyed it

[@KanYeLast]

Wow

[@KamalAmziane]

So smart

[@KanYeLast]

Relly cool vidio 😍

[@MrScardanelli]

I like this

[@thorbjrnhellehaven5766]

Thank you for great ideas!!! I think it is nicer to use absolute encoder and the compare 180 for the main part of the switch. Then go to 24 or 336 I liked the pressure switch and the flip switch. Thinking about it, you are not restricted to just binary switch, could just as easily be three, four, or more positions, just need some more logic.

[@KanYeLast]

You are really cool 😌

[@KanYeLast]

Hey, I have a question/problem how to connect the PS4 controller to the Lego mainstorm set?

[@AntonsMindstorms]

Via the MINDSTORMS app. Have you tried that?

[@KanYeLast]

No

[@KanYeLast]

Thanks

[@jimlewis1]

Do other spike compatible motors behave the same way? I know the Boost motor from droid developer was used in the official build to control a shoot em up game. I presume this technique can be used with technic motors and Boost motor, just thinking that people may have other motors at their disposal. In fact, can Boost hub use this technique?

[@AntonsMindstorms]

Yes

[@abhshu]

Nice👍, Is there any use?

[@AntonsMindstorms]

If you don't have a force sensor, this is useful. Many Robot Inventor owners don't have one.

[@abhshu]

@@AntonsMindstorms I mean, how do you code it so it can do something on a build.

[@AntonsMindstorms]

@@abhshu I'll leave that to your creativity.

[@gotrobotfll3861]

Hi! Great idea! I have a question that I can't find an answer to. How much mechanical play is there in the medium and large Spike Prime/Robot Inventor motors? How does it compare to the EV3 medium and large motors? This is an account for a youth robot team and we're deciding whether this the year to upgrade (were switching to Scratch either way).

[@AntonsMindstorms]

The same as EV3 motors, I'd say +/- 5 degrees. The encoder is on the out axle, which means the angle will read accurately to the degree. But on a stopped motor, you can twist the out axle 5 degrees forward and backward until you start to feel friction. This is big problem for control, especially for breaking hard.

[@gotrobotfll3861]

@@AntonsMindstorms Thanks so much for the reply! I appreciate it. Yes, it's a big issue for control. Our team spends a lot of time thinking about this and trying to negate it in First Lego League. Thanks for pointing out that the encoder is on the out axle. I had not thought about where in the gearbox it was.

[@emilianoortiz8795]

Antons about Gelo, does yours drift to the right when going foward? Also mine cant do the trick were he stays on his front and then falls into his legs again. I have rebuilt him one more time and the problem is still there.😔

[@AntonsMindstorms]

Yes, there is a slight drift, but I corrected for that in Python. I suppose you haven't used Python to make him stand on his head? I wrote an advanced program, and I still have to make a tutorial for it.

[@emilianoortiz8795]

@@AntonsMindstorms yeah, i programmed him on the scratch blocks and not in python. I guess my floor type can also affect how he does the trick right? It is hard ceramic floor

[@tedsun2736]

nice idea, open another door for motor use. btw, why the video is kind of blur and whitish even it is HD, it is hard to see the screen content from my side?

[@AntonsMindstorms]

Maybe force it in full HD through the settings?

[@dayonghu2536]

nice idea ！Could you please zoom in code area for clear view

[@AntonsMindstorms]

@@dayonghu2536 Try setting the video to hd 1080p and watching it full screen.

[@ilmarino5832]

Hi Anton! I'm trying to write python scripts for controlling the robot using the Playstation 4 controller, but I am not finding the library to do that. Do you have suggestions? Thank you!

[@MrScardanelli]

I like this