Picture of LieDar

LieDar is a fake lidar sensor that you can attach to the top of your car to instantly turn it into a self-driving vehicle. Whereas some companies have spent millions of dollars developing the technology to have conversations about the future of transportation, you can butt in for a mere fraction of the cost. To join the multimillion dollar conversation all you need is a 3D printer, and a little gumption.

When your car sports fashionable technology you can experience first-hand what it is like to be a leader in innovation. Everywhere you go people will stop dead in their tracks in wonder and admiration. Children will look back and remember the day they first encountered a self-driving car -- your self-driving car! Overnight you can go from merely being a terrible driver to a well-respected and beloved ambassador of the future.

Impress your neighbors. Meet new people. Become more attractive to members of all sexes. Own the road! The LieDar can do all of this for you and more. Retrofit your car today!
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Step 1: Get the Parts

Picture of Get the Parts
You will need to get:
(x1) 12V geared motor (the geared motor I used was surplus and no longer available)
(x1) D-battery holder (can put two in parallel for more dependable results)
(x1) D-battery
(x1) 3/8" i.d. shaft collar
(x5) 3/4" x 6-32 nuts and bolts
(x1) 1-1/2" x 6-32 bolt
(x1) 30-nf 3M contact adhesive
(x1) Disposable paint brush
(x1) Roll of painter's tape
(x1) Krazy glue

You will need to 3D print:
(x1) LieDar Top and Rubber Cover (printed as assembly - 1 piece - using an Objet)
(x1) LieDar Top Plate
(x1) LieDar Base (model needs to be modified to accommodate your motor)
(x1) LieDar Base Plate
(x1) LieDar Front Insert

You will need to acquire and/or (laser) cut:
(x1) 4.725" x 6.3" x 1/8" radiant acrylic panel
(x1) 4.725" x 6.3" x 1/8" translucent acrylic panel
diy_bloke7 months ago

Very nice, but how are you going to pass it off as a self-driving car when there is clearly someone behind the wheel? :-)

If affixing the text 'Google self-driving car' is all it takes, then the liedar isnt really necessary anymore :-)

Still, a nice prank

bob30301 year ago
I made this and it really works. I did modify it to beep a buzzer and to automatically switch to manual human control in heavy traffic. I can't wait to take it out of New York City and test the self driving capabilities. Man, that buzzer is sure annoying.
Chris F1 year ago
I must be retarded b/c i dont get this thing at all. How is this car supposed to be able to "drive itself"?
This always cracks me up. What fun it would be to drive around like that. Awesome as always.
gafisher1 year ago
Nice job on the fake scanner, but a little more (well, actually any) detail on how the rest of the prank was pulled off would be more instructive, but as it stands your 'ible is entertaining and inspiring.  ☺
d0vr1 year ago
I want to do this to my car! How do you pull of the self driving illusion though?
This will make the cops taking notice alright! How much in fines...................?
LaserDave1 year ago
Cool concept and sorta fun. The entire video would have been so much more enjoyable if it wasn't for the horrible, horrible music that made it necessary to mute the sound and miss what was being said. Sometimes generic or instrumental music is best when teaching a concept.
DawwwidW1 year ago
Wow, this LieDar turns way too slow.
randofo (author)  DawwwidW1 year ago
It does not need to spin fast. It is very advanced fake technology.
Lindie1 year ago
I'd recognize that laugh, in the end, anywhere. Funny!
crazyg1 year ago
like the gif on step 12, nice touch ,
if you dont have a 3d printer in the kitchen cupboard you could modify this .
get good at the steer with your knee technique, and paint the edges of a piece of acrylic to look like a kindle ,
or just get a dog in a high-vis vest on the passenger seat
babybayrs1 year ago
Good the "driver" is sitting in the car as a passenger. Suppose you want to go to park, it doesn't help to let the car drive itself to the park and you stay behind. This sounds extremely useful for people who can't drive themself? Can this also be a two-edged thing, taken advantage by some bad guys?
What about the name "LieDar"?
SHIFT!1 year ago
Randy, this is awesome and I love your design process as always. But I can't help but think the "self driving" image falls short once other drivers look in and tell immediately there's another person on the road.

When building this project, how should one attempt to conceal oneself from the views of others?
randofo (author)  SHIFT!1 year ago
SHIFT! randofo1 year ago
Ah, ok that is hilarious. Dangerous but funny.
hilarious but how did he control the car at the time, did he have something wired into the steering and accelerator otherwise he would be seen where his hands touched the wheel and where his feet touched the pedals. your idea is great, perhaps use it to blame the car if you crash.
skyworxz1 year ago
Awesome! Hilarious :D
Funny :)
iceng1 year ago
Very very neat :-)