Category Archives: Robots

fixed-gear bikes confuse Google’s self-driving cars

Google self-driving Lexus

Google self-driving Lexus

The cyclist recounted the encounter on an online bike forum:

A  Google self-driving Lexus has been in my neighborhood for the last couple of weeks doing some road testing.
Near the end of my ride today, we both stopped at an intersection with 4-way stop signs.

the car got to the stop line a fraction of a second before I did, so it had the ROW. I did a track-stand and waited for it to continue on through.

it apparently detected my presence (it’s covered in Go-Pros) and stayed stationary for several seconds. it finally began to proceed, but as it did, I rolled forward an inch while still standing. the car immediately stopped…

I continued to stand, it continued to stay stopped. then as it began to move again, I had to rock the bike to maintain balance. it stopped abruptly.

we repeated this little dance for about 2 full minutes and the car never made it past the middle of the intersection. the two guys inside were laughing and punching stuff into a laptop, I guess trying to modify some code to ‘teach’ the car something about how to deal with the situation.

the odd thing is that even tho it was a bit of a CF, I felt safer dealing with a self-driving car than a human-operated one.

This likely wasn’t the first time a Google self-driving vehicle has encountered a cyclist at a four-way stop.

The self-driving cars are notoriously careful, and tend to brake when anyone else is moving forward into the vehicle’s path. In a track stand, a rider on a fixed-gear bike may shift ever so slightly forward and back in an effort to maintain balance

While a human driver can easily see a rider doing a track stand isn’t going anywhere, Google’s self-driving car seems to be still be figuring that out.

So invent self-driving cars can operate in any environment is very difficult. The key lies in the Algorithm of how to understand what’s the car see , and respond appropriately

Rapid Autonomous Complex-Environment Competing Ackerman-steering Robot based on Jetson TK1

We has a little bit detail information about MIT RACECAR

Jetson TK1

The Jetson TK1’s pulse width modulation (PWM) output signals drive
the motor electronic speed controller (ESC) and steering servomotor on the Traxxas, bypassing the RC Receiver.
They used the “Grinch” kernel
They used the Robot Operating System (ROS) framework
Existing ROS drivers (urg_node, razor_imu_9dof, pointgrey_camera_driver, and px4flow_node) receive data from the sensors. urg_node is for the lidar scanner.
The lidar scanner is Ethernet – should be able to plug into the Jetson Ethernet port
The Point Grey camera is USB 3.0
The IMU is I2C – This is an easy interface to the Jetson on the GPIO pins, it is a level shifted breakout board.
The PX4Flow – The optical flow, distance sensor is also I2C, I’m not sure how they implemented that. In one of the pictures on the website, it looks like there’s a little breakout board of some sort, but I can’t be sure.
There appears to be a USB hub mounted in front of the Jetson on the “drivers” side. Edit: Driver’s side is ambiguous internationally, I meant the left front side.


神秘的 510 Systems 团队

Robotized Toyota Prius , self-driving car

Robotized Toyota Prius , self-driving car

上图就是Google 革命性的创新之一,无人驾驶汽车,丰田普锐斯。

Google 在过去13年中,总计收购了170家公司,其中最著名的包括Youtube,Web Analytic, Android , GPS navigation ,Google Map. 大部分收购都伴随着强大的公关攻势,多渠道的新闻发布会等。

Google无人驾驶汽车是个例外,任何公开的消息都显示,Google无人车由德国的计算机科学家,斯坦福人工智能教授 Sebastian Thrun 领导,同时得到了 DARPA 资助( Defense Advanced Research Projects Agency )。

Google最具战略性的收购,实际从未进入公共视野,根据IEEE Spectrum披露的信息,Google无人驾驶汽车与街景车技术全部来源于 Berkeley, Calif 的一个微型创业公司 510 Systems与他的兄弟公司Anthony’s Robots。

不用奇怪,这两家公司至今无法再搜索引擎与维基百科找到,就像他们根本没有存在过一样,事实上这正是Google希望的结果。收购结束后,510 Systems员工全部签署了保密协议,从此淡出公共视野。

大部分510 System员工,包括3个创始人 Levandowski, Schultz, Droz 在收购后仍然在Google工作,他们合并到了Google X 部门。Levandowski是产品经理,总负责人。Schultz负责电子控制系统。Droz 管理10个工程师。

 Sebastian Thrun 近期离开了Google ,担任Udacity的CEO.


The sponsors of dronecode

Dronecode is building and supporting a community of developers and providing them the resources and tools to help them make innovative advances in UAV technology.Now and Intel is the gold sponsors. Does thoes drone projects who sponsor by big company become rivals open source community like diydrones ?

Personal robotics and Dmitry Grishin

dmitry.grishin.qax299Dmitry Grishin was born on a missile base in the Soviet Union.Her grew up around technical people working on secret projects; his father designed radar systems from the MIG-29 jet fighter.

About Dmitry Grishin

MIT Technology Review’s Innovator under 35.

Co-founder, CEO and Chairman of Board at the Mail.Ru Group* company, which Dmitry took public on the London Stock Exchange in 2010

Born in 1978, Dmitry Grishin is considered as one of the most successful young entrepreneurs in Russia.

Graduated with distinction from the Faculty of Robotics and Complex Automation at Moscow State Technical University.