Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
WKetel
User Rank
Rookie
re: Propeller beanie design problem: attaching the propeller to the motor
WKetel   3/24/2013 2:40:33 AM
NO RATINGS
Probably the simplest similar adapter would have been a piece of insulation from a chunk of number fourteen copper house-wiring cable. From each foot of wire you could produce about 36 of the 3/8 inch long adapters, and at about 90 cents a foot for the two conductor cable it would have been quite cheap. But those spacers are a more elegant way to do it.

ai5ee
User Rank
Rookie
re: Propeller beanie design problem: attaching the propeller to the motor
ai5ee   3/22/2013 9:36:04 PM
NO RATINGS
I would go with magnets for mounting.

ai5ee
User Rank
Rookie
re: Propeller beanie design problem: attaching the propeller to the motor
ai5ee   3/22/2013 9:35:11 PM
NO RATINGS
I thought of making a powered propeller hat a few years ago. I wanted the propeller to turn slowly enough to be able to see the blades (2 or 3 revolutions per second or so). I programmed a PIC to PWM the motor, but I found that there were a bunch of things that affected the speed (temperature, humidity, battery voltage...) and since I was trying to run at the hairy edge, it just didn't work very well.

seaEE
User Rank
CEO
re: Propeller beanie design problem: attaching the propeller to the motor
seaEE   3/21/2013 3:10:06 AM
NO RATINGS
Yikes! know? no? I need to proofread my messages and get an extra hour of sleep!

seaEE
User Rank
CEO
re: Propeller beanie design problem: attaching the propeller to the motor
seaEE   3/21/2013 3:09:08 AM
NO RATINGS
Unforunately know. Right now I am chained to my desk, and they change the combination daily. So is there a way to procure a beanie if you are not at the event? :)

OmegaMan
User Rank
Rookie
re: Propeller beanie design problem: attaching the propeller to the motor
OmegaMan   3/20/2013 3:51:44 PM
NO RATINGS
Actually, it's the tolerances that are the same.

dsando55001
User Rank
Rookie
re: Propeller beanie design problem: attaching the propeller to the motor
dsando55001   3/20/2013 1:23:33 PM
NO RATINGS
Clive: This must be a magic adapter. The ID and OD are the same. A long time ago I designed a fabricated part. The machinist insisted there was a dimension problem, I of course insisted it was correct. He later came in with a handful of metal shavings. "Here's your part" I learned my lesson.

Max The Magnificent
User Rank
Blogger
re: Propeller beanie design problem: attaching the propeller to the motor
Max The Magnificent   3/20/2013 8:42:29 AM
NO RATINGS
Great -- thanks for this feedback and correction -- I shall take David outside and give him a sound thrashing (he won't make this mistake again :-)

Max The Magnificent
User Rank
Blogger
re: Propeller beanie design problem: attaching the propeller to the motor
Max The Magnificent   3/20/2013 8:41:29 AM
NO RATINGS
Good suggestion -- I'll pass this on to the designer -- in fact the motor can be spun in either direction at variable speed under program control. Will you be attending Design West?

Max The Magnificent
User Rank
Blogger
re: Propeller beanie design problem: attaching the propeller to the motor
Max The Magnificent   3/20/2013 8:40:27 AM
NO RATINGS
One of the guys involved in this really wants to get his cap to hover about a foot above his head and to follow him around -- even turning when his head turns .... maybe in rev 2.0 :-)

Page 1 / 2   >   >>


Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
Betajet
5 comments
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Max Maxfield

Recommended Reads From the Engineer's Bookshelf
Max Maxfield
30 comments
I'm not sure if I read more than most folks or not, but I do I know that I spend quite a lot of time reading. I hate to be idle, so I always have a book or two somewhere about my person -- ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...