# Wiimote Project

### Author Topic: First trial: ideal distance Wiimote <-> size screen  (Read 15347 times)

#### sts70nl

• Posts: 8
• Karma: +1/-0
on: June 26, 2008, 03:42:20 AM
Objective:
Have a rule of thumb to quickly setup the Wiimote for use with a beamer and whiteboard.

Criteria:
Consistent and very optimal tracking on a white board

Assumption
The more angles, the more skewed and the less optimal the tracking

Setup:
- no beamer (haven't got one to play around with)
- real whiteboard
- Wiimote
- Boonjin's 0.2.2 beta
- Living room (daylight)

The Wiimote has a 90 degree angle on the whiteboard, however it is slightly angled upward (see picture attached).

Procedure
- Start the calibration procedure
- Trial & error to find the maximum view of the Wiimote camera
- Repeat until the maximum area is found

Results
 d WT WB HL HR resolution W:H 104cm 78cm 77cm 53cm 47cm 114% 3.1:2 50cm 36cm 34cm 25cm 25cm 120% 2.8:2

Observations:
• - width / height ratio of the Wiimote is 3:2
• - distance and height seem to have an easy ratio

Hypothesis
The distance of the Wiimote to the whiteboard follows: d = 2*H
Where (d) is the distance Wiimote to whiteboard, and (H) = projected height

Question
It would be very nice to get additional measurements as well to get a good rule of thumb.  For instance, I couldn't use a beamer (was not required for I was looking for the maximum area) and my whiteboard isn't one of the largest so I could take only two measurements.

Stefan van Aalst

• Posts: 1178
• Karma: +49/-0
Reply #1 on: June 26, 2008, 04:00:32 AM
sts70nl
Awesome work!

#### UndCon

• Posts: 566
• Karma: +11/-3
Reply #2 on: June 26, 2008, 07:55:04 AM
excellent! great work sts70nl

#### mystre

• Posts: 69
• Karma: +2/-0
Reply #3 on: March 15, 2009, 06:56:07 AM
I'm training a couple of our IT guys to set up wiimote IWB in other schools, and wanted to give them a starting point when they setup the wiimotes.  This is an image of the what I came up with.  Are these starting points fairly reasonable?