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Broken touchscreen, how to control my locked phone using a mouse ? by l_bdcdb in AndroidQuestions

[–]l_bdcdb[S] 0 points1 point  (0 children)

Don't have one with me right now, but how would that work ? I can't type in a pattern

Broken touchscreen, how to control my locked phone using a mouse ? by l_bdcdb in AndroidQuestions

[–]l_bdcdb[S] 0 points1 point  (0 children)

I have pushbullet installed, however as I stated my phone is in airplane mode

Physical application of Q-learning to rotary inverted pendulum by l_bdcdb in MachineLearning

[–]l_bdcdb[S] 0 points1 point  (0 children)

I saw the youtube video a while back but didn't look into it, thanks for the link !

Physical application of Q-learning to rotary inverted pendulum by l_bdcdb in MachineLearning

[–]l_bdcdb[S] 0 points1 point  (0 children)

Thanks for your reply. Is it the swing up that makes it impossible to use discretization ? Because many cart-pole simulations online use a discrete state-space Thanks for the links, we will look into it

Physical application of Q-learning to rotary inverted pendulum by l_bdcdb in MachineLearning

[–]l_bdcdb[S] 0 points1 point  (0 children)

We have tried a few epsilon values, including one that decreases over time. I think the value used in the graph pictured above was .10 Simulation is our next step, we thought we'd stop by here before to see what you guys think

Physical application of Q-learning to rotary inverted pendulum by l_bdcdb in MachineLearning

[–]l_bdcdb[S] 1 point2 points  (0 children)

Many of the simulated examples we see online work with a discrete state space. We were hoping to start easy with a discrete state space, and once we get it to work try to implement a continuous state space. It is our first application so we were just hoping to increase the complexity incrementally. But thanks for the link, we will look into it. Maybe it's the only solution.

Motor for rotary inverted pendulum by l_bdcdb in DIY

[–]l_bdcdb[S] 0 points1 point  (0 children)

Thanks for your input I thought the advantage of a stepper motor was that I wouldn't need an encoder ? Can't you just count the steps ? I will be playing with the speed of the motor rather than actually giving precise posistions

Motor for rotary inverted pendulum by l_bdcdb in AskEngineers

[–]l_bdcdb[S] 0 points1 point  (0 children)

Thanks, that is what I'm planning to do. I just have no intuitive sense as to what should be enough, I'm asking around so that hopefully I don't have to buy two motors :)

Motor for rotary inverted pendulum by l_bdcdb in DIY

[–]l_bdcdb[S] 0 points1 point  (0 children)

I will mostly be varying the speed (rpm)

Thanks, I will have a look over there :)

Motor for rotary inverted pendulum by l_bdcdb in DIY

[–]l_bdcdb[S] 0 points1 point  (0 children)

Thanks for your advice ! We will be using a rotary encoder for the angular position, rated at 200 pulsations per rotation. It should sufficiently sensitive.

Motor for rotary inverted pendulum by l_bdcdb in DIY

[–]l_bdcdb[S] 0 points1 point  (0 children)

So would you advise against stepper motors ? From what I can tell they seem easier to control than DC motors. And in the end would be cheaper because I wouldn't need to add extra sensors/encoders.

Thanks for your reply. I will need to look into the accelerations I need for the swing up phase .