Subject:
|
Re: Lego Calipers
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Wed, 1 Sep 1999 18:24:16 GMT
|
Viewed:
|
868 times
|
| |
![Post a public reply to this message](/news/icon-reply.gif) | |
In lugnet.robotics, lego-robotics@crynwr.com (Ben Williamson) writes:
> [...] I used the 20t gear in my (very simple) calipers
> which are now on the web:
(actual URL is http://www.pobox.com/~benw/lego/calipers/index.html )
> Those 4-stud-long gear rack thingies have 10 teeth each, and I wanted to
> get close to one increment on the rotation sensor per stud of movement.
> With the 20t gear it works out at an increment per half stud, which is
> fine. Now I can go around my house and measure everything in real units -
> Lego studs. :)
Those calipers are pretty cool. It seems to me though you could get more
precision, since the slop on the gears is a lot less than half a stud. The
rotation sensor presents very little friction torque, so I imagine you could
add a 5-to-1 expansion stage (with a z40 and a z8) and it would still work
fine. Then you would have a reading in 1/10 stud increments, a lot more
convenient than 1/2 stud increments because you don't have to divide by two --
just shift the decimal point over.
- Robert Munafo http://www.mrob.com/
LEGO: TC+++(8480) SW++ #+ S-- LS++ Hsp M+ A@ LM++ YB64m IC13
|
|
Message is in Reply To:
![](/news/x.gif) | | Lego Calipers
|
| (...) Quite useful too - I used the 20t gear in my (very simple) calipers which are now on the web: (URL) Those 4-stud-long gear rack thingies have 10 teeth each, and I wanted to get close to one increment on the rotation sensor per stud of (...) (25 years ago, 1-Sep-99, to lugnet.robotics)
|
14 Messages in This Thread: ![Micro Scout can run off its own motor -Robert Munafo (29-Aug-99 to lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![More about DDK (was Re: Micro Scout can run off its own motor -Robert Munafo (1-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Lego Calipers -lego-robotics@crynwr.com (Ben Williamson) (1-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![You are here](/news/here.gif)
![](/news/x.gif) ![](/news/28.gif) ![](/news/x.gif) ![](/news/268.gif) ![Geartrain tables (was Re: More about DDK (was Re: Micro Scout can run off its own motor -Robert Munafo (1-Sep-99 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/28.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: More about DDK (was Re: Micro Scout can run off its own motor -Ian Sinclair (6-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: More about DDK (was Re: Micro Scout can run off its own motor -lego-robotics@crynwr.com (Ben Williamson) (6-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: More about DDK (was Re: Micro Scout can run off its own motor -Robert Munafo (7-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: More about DDK (was Re: Micro Scout can run off its own motor -Robert Munafo (7-Sep-99 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: Micro Scout can run off its own motor -Tobias Möller (5-Sep-99 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/68.gif) ![Re: Micro Scout can run off its own motor -Arjen Gerstel (13-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Motor/generator efficency (was Re: Micro Scout can run off its own motor) -James Howse (14-Sep-99 to lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: Motor/generator efficency (was Re: Micro Scout can run off its own motor) -Eric Brok (14-Sep-99 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: Motor/generator efficency (was Re: Micro Scout can run off its own motor) -Martin Erdelen (15-Sep-99 to lugnet.robotics)](/news/x.gif)
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|