Ask HN: Is there no hackable RC car?

https://news.ycombinator.com/item?id=14667352

by bcherny • 9 years ago

20 15 9 years ago

news.ycombinator.com

I want to build a small self driving car, but am worried about getting sucked down the hardware rabbit hole. Instead I'd like to use an off the shelf car kit, which will let me focus on the software side.

Nice to haves for the hardware:

- Medium sized car (big enough to fit a laptop on top), maybe 3x3x3 feet - Comes with power, motor, wifi, camera - Extensible: I can add radar, etc. if needed

The best thing I've found so far is this kit [1], but it's pretty expensive and doesn't seem like it's made to be hacked.

Does anyone have experience with something like this?

[1] http://www.electricbeachwagons.com/index.php?p=1_2_Products

King-Aaron• 9 years ago

How about powerwheels cars?

They're cheap second hand, they have a cheap plastic body so you won't feel back chopping it up to fit hardware onto it... They don't have electric steering, so you'd need a servo to operate that. However they're pretty good otherwise.

Edit: An article on the subject. Brief but you get the idea https://devpost.com/software/self-driving-powerwheels

dpeck• 9 years ago

That seems like a very good idea. I got one secondhand (given away) a few years ago for my little one and in the process of hunting down some replacement wheels and a new battery for it I stumbled into a rich world of powerwheels enthusiasts who optimize them for kids or for themselves.

The computerized hackability may be a little outside of that community but you'd have some great shoulders to stand on as far as the equipment.

lathiat2• 9 years ago

It's relatively straight forward to build RC cars through hobby components, i'm not sure about a 3x3x3 car kit though - I think most kits target a different size. You can probably use the same sortof stuff to build such a thing though.

Look at hobby king for cheap bits...

There's also several published self driving RC car projects including code but right now my google is failing me, theres a couple hobby ones using rpi and such and one from a university I wish I could find.

lathiat2• 9 years ago

found it, from georgia tech

- http://autorally.github.io/ - https://www.youtube.com/channel/UCSt0P1uqi4zU5RX2DZC_Qvg/vid... - https://github.com/AutoRally/autorally

jweather• 9 years ago

Most RC cars are about as hackable as it gets already. You can drop an Arduino in between the receiver and the motor controller/servos and drive them however you want with simple PWM signals. 3x3 feet is enormous, though -- you could try looking for sites that sell BattleBots starter frames, depending on the terrain you want to tackle. Here's one: http://www.battlekits.com/

lamlam• 9 years ago

made to be hacked.

An oxymoron if I ever saw one.

I don't think there's any way not to get into the hardware part if you want to do something like this. If you are really opposed to hardware then might I suggest looking at some road traffic simulators and trying to simulate a self driving car? Might be a good place to start.

yial• 9 years ago

Personally, any hobby-grade rc car that uses servos for steering, a real receiver, etc is pretty easy to hack.

For something large, I would say look at the Traxxas X-Maxx.

robotresearcher• 9 years ago

Intel's Euclid might be interesting for an all-in-one sensing and compute unit. Just need to interface with motor controller and steering servo. Arduino would be a good pairing for that. The RGBD camera is probably indoor only for depth.

https://click.intel.com/realsense.html

jquast2• 9 years ago

just received this as a gift, https://www.elegoo.com/product/elegoo-uno-project-upgraded-s...

haven't put it together yet, but its got everything you want except video camera, no reason it can't be added -- its just an arduino..

jquast2• 9 years ago

well, except for "holding a laptop", which is probably a requirement you'd be better without, What do you need screen, speakers, and keyboard on a moving RC car for?

something small like an Intel Compute Stick has nearly all the power of a laptop, but is very small and you can use remote desktop.

bcherny• 9 years ago

That looks really nice. How big is it? And is the software it's running open source, and made to be extended?

dhruvrrp• 9 years ago

If you can't find one which fits your size requirements, i would recommend getting a modmypie rc car kit and using ROS to communicate b/w your laptop and the car.

richerlariviere• 9 years ago

On the software side you can hack around with PX4, a drone autopilot firmware running on Pixhawk board. PX4 is supporting rovers aka rc car. The community is great also.

Someone• 9 years ago

https://diyrobocars.com, http://www.donkeycar.com.

Also, think about what you want. I see a bit of conflict between your two statements "an off the shelf car kit, which will let me focus on the software side" and "Extensible: I can add radar, etc. if needed"

EJTH• 9 years ago

Sounds like you want a roomba...

http://spectrum.ieee.org/automaton/robotics/diy/irobot-annou...

Ask HN: Is there no hackable RC car?

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