Search found 38 matches

by Archie
13 Feb 2019 15:32
Forum: Bearings
Topic: Ball bearing service
Replies: 0
Views: 444

Ball bearing service

In several years- (or even decades-) old devices, bearings are not rotating freely anymore. The problem in most cases is caused by original lubricants: decomposed, dried out, contaminated etc. It's possible to just replace them, but high-grade bearings are expensive, and some sizes difficult to find...
by Archie
13 Feb 2019 15:08
Forum: Bearings
Topic: Variants
Replies: 0
Views: 184

Variants

For good trackballs, there are two main kinds of ball retaining/bearing designs: rotating rollers or gliding beads. They're very different in terms of feel: rolled ball easily rotates in two directions, while gliding ball moves in any direction, including twist motion. Both designs have advantages a...
by Archie
13 Feb 2019 14:46
Forum: Modding
Topic: Reasons
Replies: 0
Views: 171

Reasons

As for me, there are two main factors: 1. There are many great old models with fine mechanics and nice ergonomic shape - but interface is outdated, and/or resolution too low to be usable on contemporary systems. Typical 200 pulses for revolution value was totally sufficient for 480x640 screens, but ...
by Archie
03 Feb 2019 20:12
Forum: Companies
Topic: Logitech
Replies: 0
Views: 256

Logitech

https://trackballs.eu/media/Logitech/Logo1988_a_s.jpg Founded in 1981 by Daniel Borel, Pierluigi Zappacosta and Giacomo Marini mostly for manufacturing computer peripherals, but in early years has actively developed various software packages like compilers etc. Their first pointing device was a P4 ...
by Archie
03 Feb 2019 19:49
Forum: Sensors
Topic: Logitech Marble
Replies: 0
Views: 323

Logitech Marble

Released in 1994, it was a revolution in the optomechanical era. For the first time, it allowed contactless reading of ball surface movement, eliminating whole set of problems associated with earlier designs: skipping, uneven movement, frequent cleaning. Principle of operation requires special patte...
by Archie
03 Feb 2019 19:40
Forum: Trackballs
Topic: Logitech TrackMan Marble FX
Replies: 0
Views: 689

Logitech TrackMan Marble FX

Ball size: 2 1/16" (52.5mm) Interface: PS/2+RS-232 M/N: T-CJ12 P/N: 804251-0000 PnP ID: LGI8049 Marble FX is often considered to be one of the best Logitech trackballs. Very unusual design looks a bit funny, but convenience of use is tremendous: it's very convenient for long work. Ball and buttons a...
by Archie
01 Feb 2019 21:49
Forum: Site information
Topic: About this site
Replies: 0
Views: 332

About this site

It took me long time to create Trackballs.EU... The story is simple: being trackball user, I've always been in search of my "ideal trackball". For many years, I've tried almost all available finger-operated models, and selection of every next one motivated me to collect available information. Browsi...
by Archie
01 Feb 2019 14:35
Forum: Modding
Topic: Logitech T-CJ12
Replies: 0
Views: 566

Logitech T-CJ12

Main article about this device: https://forum.trackballs.eu/viewtopic.php?f=17&t=6 Marble FX's combo PS/2-serial interface is outdated. Software support for 4th. button (small red one) is a biggest problem with this trackball nowadays, as it requires real PS/2 port for proper initialization (in othe...