New Products Flash Sale
Thread Tools
This thread is privately moderated by Jack Crossfire, who may elect to delete unwanted replies.
Old Dec 27, 2012, 05:39 AM
Jack Crossfire is offline
Find More Posts by Jack Crossfire
Registered User
Jack Crossfire's Avatar
Joined Sep 2006
2,412 Posts
Why Rovio makes $42 million on a ball that does nothing

This has lot of problems, which is why Rovio gets a $42 million investment on a ball that does nothing while a rover that tries to stream video gets nothing. The mane problem seems to be the high current used by the Rover 5 motors. They take 1A, causing serious interference. Despite being UDP, someone is buffering when the connection is lost, causing driving commands to get delayed or stuck.

This rover looks dead, unless another communications method can be devised, the buffering can be disabled, or the interference can be traced to a fixable source, like voltage ripple in the 3.3V line. At least some autonomy might need to be done onboard instead of over wireless.

Also should note conventional wood glue takes 2 days to set, in a 65F apartment. After waiting 1 day for the 1st stage of wood parts to set, gave up & hot glued it together.
Jack Crossfire is offline Find More Posts by Jack Crossfire
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 27, 2012, 06:19 AM
ltc is offline
Find More Posts by ltc
AMA 97737
ltc's Avatar
United States, MA, Mendon
Joined Mar 2010
4,286 Posts
Control the loop area of the motor current, pay careful attention to the return impedances/path, provide sufficient local bypassing for motor transient current and control edge rates ... always the first steps to fixing issues such as this.

And I have no idea who Rovio is....
ltc is offline Find More Posts by ltc
RCG Plus Member
Reply With Quote
Old Jul 06, 2013, 08:05 PM
mikempf is offline
Find More Posts by mikempf
Registered User
Joined Jul 2013
1 Posts
Wowwee Rovio?
mikempf is offline Find More Posts by mikempf
Reply With Quote

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Why does the WhiteHouse care about Janet Jackson exposing herself on national TV?!? RCGambler Life, The Universe, and Politics 8 Apr 19, 2012 07:31 AM
For Sale Herr AquaStar 42" make that 50.00 shipped Cont. US skypilot_one Aircraft - Electric - Airplanes (FS/W) 6 Mar 04, 2012 08:18 PM
Help! i know this has nothing to do with the rc comunity and thats why i am postin it here! f14_Tomcat_92' Life, The Universe, and Politics 59 Nov 24, 2006 04:15 AM
Fundango: added a rudder and it does nothing. Why? pfm Parkflyers 18 Feb 07, 2005 06:41 PM
Help! Pulling up does nothing at speed- know why? sloper steve Scratchbuilt Indoor and Micro Models 9 Jan 25, 2004 12:07 AM