Show HN: Self-Driving Pi Car • Hacker News Board

Re: Show HN: Self-Driving Pi Car

#41

Post by felsal » Tue, Nov 20, 2018, 5:14 PM UTC

moftz wrote: post #40

I built something similar for my senior design project. We made a game of Pacman using two little rovers running FreeRTOS with RN-131C wifi modules on a PIC board and an overhead PixyCam connected to a raspberry pi. The rovers had a color sensor on the front and back that would allow it to track a black line on white paper. The overhead camera would feed pacman and ghost positions to the identical rovers. The rovers…

Great! Our project had the same idea of combining different skills: I was working with ML and my colleague was the TA from a robotics class.

Re: Show HN: Self-Driving Pi Car

#42

Post by felsal » Tue, Nov 20, 2018, 5:18 PM UTC

dmurthy wrote: post #38

dmurthy wrote: post #36

So all of the training was done without a GPU?

Elaborating on my question. In your read me it says - "In the computer that you will perform the training -- protip: don't train the model in the Raspberry Pi! -- install all the requirements by runnig:" Could you give some specs on the computer? I currently don't own a GPU based PC so was wondering if I need to get one or use cloud based GPU instance.

No, you don't need a GPU at all. It helps, of course, but it not necessary. I don't remember the specs of the computer we used, but to give you an idea we give all the training data to undergrad students in the machine learning class (https://www.kaggle.com/c/mac0460-self-driving) they achieved good results with their personal laptop.

Re: Show HN: Self-Driving Pi Car

#43

Post by mehrdadn » Tue, Nov 20, 2018, 8:15 PM UTC

1manowar1 wrote: post #30

mehrdadn wrote: post #13

Earlier quoted context omitted.

I'm tired of seeing this comment over and over on HN. Does everyone who writes a Python 2-based project on HN have to explain themselves and provide a valid excuse? Why can't people just be deciding they like Python 2 more than 3, or finding that it's more suitable for their project?

I totally agree. There are so many embedded stuff running Python 2 out there that it will go nowhere. For me the countdown is a joke.

I find it quite telling you were downvoted. It makes it clear that people hate the idea that Python 2.7 may stay around so they keep trying to shut it down at every opportunity.

Re: Show HN: Self-Driving Pi Car

#44

Post by qxzw » Tue, Nov 20, 2018, 8:19 PM UTC

evolutionas wrote: post #7

Cool project! Last year I built self driving robot for my bachelor's thesis. Instead of building end-to-end deep learning pipeline I used two neural nets: one trained with genetic algorithm to drive a robot based on ultrasonic sensors, another for object recognition and detection. Based on detected items (like road signs) robot took different actions. Video: https://www.youtube.com/watch?v=cUXh7iP3hoQ Code: https://g…

while 'pigs' != 'fly':

...

Made me chuckle!

Re: Show HN: Self-Driving Pi Car

#45

Post by dmurthy » Wed, Nov 21, 2018, 4:21 AM UTC

felsal wrote: post #42

dmurthy wrote: post #38

Earlier quoted context omitted.

Elaborating on my question. In your read me it says - "In the computer that you will perform the training -- protip: don't train the model in the Raspberry Pi! -- install all the requirements by runnig:" Could you give some specs on the computer? I currently don't own a GPU based PC so was wondering if I need to get one or use cloud based GPU instance.

No, you don't need a GPU at all. It helps, of course, but it not necessary. I don't remember the specs of the computer we used, but to give you an idea we give all the training data to undergrad students in the machine learning class ( https://www.kaggle.com/c/mac0460-self-driving ) they achieved good results with their personal laptop.

Thanks a lot :-)

Re: Show HN: Self-Driving Pi Car

#46

Post by pksm » Wed, Nov 21, 2018, 4:33 PM UTC

tintor wrote: post #35

Looking at the video, the toy car is turning in-place when it gets to the boundary. There is no realistic turning radius proportional to its size.

The toy car used differential steering with 2-wheels and a castor wheel. One of our ideas of future work was to change the current steering method for an Ackerman model, giving our toy car a more realistic dynamic.

Re: Show HN: Self-Driving Pi Car

#47

Post by nazz » Wed, Nov 21, 2018, 5:36 PM UTC

Very interesting project. It reminds me of a paper I read recently about a similar Pi car: https://www.sciencedirect.com/science/article/pii/S231472881...

Re: Show HN: Self-Driving Pi Car

#48

Post by sdan » Thu, Nov 22, 2018, 3:42 AM UTC

I made a self driving car for a competition called the International Autonomous Robot Racing Challenge, held in Waterloo, Canada. I used my robot to beat Georgia Tech on my own.

Great to see so many others doing similar things.

I used a CNN/LSTM network and you can read more here: blog.suryad.com/iarrc2018

Re: Show HN: Self-Driving Pi Car

#49

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