Re:Ask HN: What is the most difficult tech/dev challenge you...
by ciumonk on Sunday April 27, 2014 @07:48AM
(#7654753)
Made an autonomous vehicle out of a VW Golf/Rabbit, in around 2 weeks.
Custom built hardware, including the actuators.
Custom built RTOS on micro nodes.
Driving via openCV, hough transforms for lane detection, stereovision and flows for obstacles, surf/etc for traffic signs(don't ask, I was learning)on a stack of 2 laptops connected via gigabit ethernet.
Nicest thing: I got the models trained mainly without moving the car, by pumping the framebuffer of two racing/car games, rFactor and GTA3 through glcs to openCV and controlling the games via uinput to make a virtual city to drive in.
Don't have a lot of pics, here's some HW:
http://imgur.com/9cfzbMv ( yes, that's an old cordless drill and an angle grinder head with a bespoke bike chain :) )
http://imgur.com/5x9T9gi (piston is weirdly offset so I could still put my foot on the brake in emergencies, like that one time i smashed it into a fence...)
http://imgur.com/Ig7MaLT (notice how I kept the costs down to almost nothing, in this case the air distributor for the brakes made with Meccano and old air valves and a geared motor, since I didn't have the funds to buy anything)
Custom built hardware, including the actuators.
Custom built RTOS on micro nodes.
Driving via openCV, hough transforms for lane detection, stereovision and flows for obstacles, surf/etc for traffic signs(don't ask, I was learning)on a stack of 2 laptops connected via gigabit ethernet.
Nicest thing: I got the models trained mainly without moving the car, by pumping the framebuffer of two racing/car games, rFactor and GTA3 through glcs to openCV and controlling the games via uinput to make a virtual city to drive in.
Don't have a lot of pics, here's some HW:
http://imgur.com/9cfzbMv ( yes, that's an old cordless drill and an angle grinder head with a bespoke bike chain :) )
http://imgur.com/5x9T9gi (piston is weirdly offset so I could still put my foot on the brake in emergencies, like that one time i smashed it into a fence...)
http://imgur.com/Ig7MaLT (notice how I kept the costs down to almost nothing, in this case the air distributor for the brakes made with Meccano and old air valves and a geared motor, since I didn't have the funds to buy anything)