Simple Drifting robot

fritsl · September 3, 2011, 5:09pm

This is a small hack I made for a Make video.

The code is attached above :)

This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/simple-drifting-robot

ignoblegnome · September 22, 2011, 1:44pm

Nice episode, Frits!

Nice episode, Frits!

chiefdadddy · September 22, 2011, 1:56pm

Too cool

Great video and Wow it responds very well and does a great job of doing it’s thing. I love hacks and mods!

chowmix12 · September 22, 2011, 2:45pm

Yay!

Totally worth the month of wait for a video!
To clarify, your pseudocode is to go forward/ turn right when there is nothing in front, and then drift left when an obstacle is in front?
I have a robot that I made from a toy, and I found that it goes to fast, 10 km/h, How can I fix that, if I go too low with PWM, the robot won’t always start moving from the stopped position. I think I should find a way to add more torque to my robot.

fritsl · September 22, 2011, 2:56pm

Yo!

Thanks
The code is not pseudo - it’s PICAXE, and real. That easy And I cannot clarify it better than showing you the code
Sounds like you need gearing: https://www.robotshop.com/letsmakerobots/node/763

birdmun · September 22, 2011, 7:29pm

Another thought

use a slightly higher pwm to start and then drop it down once the vehicle is moving.

ignoblegnome · September 23, 2011, 12:58am

Changing the PWM frequency

Changing the PWM frequency may also help. Lower frequency means wider and longer pulses, which may help at low speeds. You may have to play with the frequency to tune to your motors.

chowmix12 · September 23, 2011, 2:43pm

Hmmm

I’ll have to try that soon. Thanks.

voodoobot · September 23, 2011, 10:06pm

You made it to the front

You made it to the front page of reddit.com tech page. Congrats sir!!!

chowmix12 · September 24, 2011, 1:29am

Thanks!

I finally got the robot slow enough! I used 60ish % PWM and it was rolling smooth. Also, there was a 75millisecond coasting time. Thanks, you guys rock!

fritsl · September 24, 2011, 7:06am

Thanks

Thanks

costyn · October 3, 2011, 9:42am

Very nice!

I enjoyed that a lot… yet another one to add to my list of robots I wanna make

Frits: which oscilloscope was that you were using? Is that the DSO Quad available on Seeedstudio.com? Or some funky app on your phone?

Cheers!

fritsl · October 3, 2011, 10:02am

Thanks :)It’s the DSO Nano -

Thanks

It’s the DSO Nano - first version - from Seed Studio. You can get it cheaper with the ALABTU code

mitesh821993 · January 13, 2012, 12:29am

can u upload pdf from of

can u upload pdf from of this robot?

thanking you.

altapowderdog · January 13, 2012, 3:06pm

thats awesome! Normally

thats awesome! Normally robots move slow and boring- not this!

fritsl · February 22, 2012, 1:55pm

Can I … What?

Can I … What?