Here is the project updates of DoraBot Project. |
posted May 25, 2013, 9:21 PM by Hao Zhang
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updated May 25, 2013, 9:23 PM
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Sorry for being quiet for a really long time. But don't worry, we are live again!
Hao have been back to China and start organizing a group of robot hobbyists to build a second prototype of DORA in awesome Chaihuo Makerspace in Shenzhen, China since the end of April. We meet up each Saturday night at Chaihuo Makerspace to share knowledge, skill and passion about building robots.
After 4 weeks of discussion and preparing, last night we've started working on 4 separate sub-projects that help people who involved get a better understanding of robots, as well as a hands-on experience on how to build, disassemble, fix, and hack various types of robots.
Take a look at the meetup last night: |
posted Sep 19, 2012, 6:26 PM by Hao Zhang
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updated Sep 19, 2012, 6:30 PM
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 Hao gave his speech "The Future Is Opensource Robotics" last night at Bay Area Software Engineer (BASE) meetup in front of almost 300 attendances. The topic of this meetup is"The Future is Robotics". Jake, Lilia and Steve who have worked on DoraBot were present.
Other than DoraBot, speakers from Willow Garage, Robot Launchpad, Robot App Store, Microsoft, and MenuGurus were presenting.
Special applauds to Michael Latulippe and Bruno Terkaly who made this wonderful event happen! |
posted Sep 11, 2012, 1:34 PM by Hao Zhang
posted Aug 28, 2012, 10:09 AM by Hao Zhang
Hao got the arm working (5 out of 6 DOF, thanks to Jake's help in stepper driver), so here's the video on how exiting DoraBot becomes when he gets :
DoraBot testing out his new arm
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posted Aug 22, 2012, 3:41 PM by Hao Zhang
The EEG control was pretty good, steve from Puzzlebox Brainstorm has been working on how to use brain to control various stuff for years, and has successfully controlled stuff like RC helicopter, lego next robot, electric wheelchair and stuff. |
posted Aug 18, 2012, 1:18 AM by Hao Zhang
Hao burned Stepper motor Driver v1.2 today, by turning the current adjust resistor too low. A high current goes through L298N and releases the magic smell. Stupid mistake!
Post this as a warning to future operations. |
posted Aug 11, 2012, 3:41 AM by Hao Zhang
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updated Aug 11, 2012, 3:42 AM
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McHawking partying at toorcamp!
McHawking is in toorcamp now! After travelling with People's Republic of Nosebridge, on OccupyOaklandOccuBus, he finnally made his way to toorcamp!
McHawking is actually running facefollowing script during the video. |
posted Aug 7, 2012, 5:55 PM by Hao Zhang
Hao visited Boston from July 20th to 25th. and have met Yaroslav and Leif, two of the people who makes takkTile, the original idea source of DoraTouch, in Harvard University.
Check out the passive robotic hand they made: There is a project page on takktile project about DoraTouch robot touch/pressure sensor, that links to the articles here. |
posted Jul 23, 2012, 11:30 PM by Hao Zhang
Hao is visiting Boston and working on controlling a 5 DOF robotic arm together with DGonz (detailed development on his blog) in MITERS, and when we try to make a double sided PCB boards with etching, we come up with a new method to do registration perfectly.
As you can see, the front and back side of the board aligned up very well.
The new method is simple. We didn't took picture of the process, so here's the simple text instruction:
1 Put both front and back side on same image, aligned up. 2 Move front and back side closer, with an isolation a little bit larger than the thickness of the board. Draw a line with width as same as the thickness of the board on the center of isolation. Print the pattern on a piece of gloss paper. 3 fold the two sides of gloss paper together, make sure grey line perfectly aligned up with both ends of board. 4 put the board into laminator.
If you can't understand the text (which is very possible due to Hao's English level), I might publish a tutorial after I do this workshop in toorcamp.
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posted Jul 18, 2012, 2:07 PM by Hao Zhang
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updated Jul 18, 2012, 2:08 PM
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You might have notice, there is an gigantic robot arm mounted on McHawking before. It was a hydraulic robot arm that Jake found at some garbage yard years ago.
Back then, it looks like this:
Now Hao is trying to control this robotic arm, to make the wheelchair robot do some actual work for Noisebridge, say grab soda from a fridge or loading dishwasher.
Hao build his pressure sensor to grant the robot gripper an ability to know if it actually holds something. After his prototype works, he start working on taking the old robot arm apart, and reassemble it to control it with electric motor, rather than hydraulic one.
These are part of the components we got in Noisebridge,
After we took apart the robot arm, we put two DOF back. It look like this NOW:
Hopefully we can get Mr McHawking’s arm working before taking him to toorcamp. ^_^
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