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Chris Josten 2021-02-10 15:24:02 +01:00
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title: Reverse engineering of the Wii Fit U Fit Meter
slug: fitmeter-re-1
firstPublished: 2020-09-1 20:00:00
author: Chris Josten
hidden: true
tags:
- reverse-engineering
- wii-fit-u
---
Today I'd like to introduce you to my project which I've been working on for a while. I wanted to discover the protocol the Fit Meter for Wii Fit U was using, so I could read the data out to my own format and I would like to synchronize the step count of the Fit Meter with the 3DS. The New 3DS XL is a bit too big for my pockets for my taste, but those play coins you can earn while walking are quite useful.
# What is the Fit Meter?
![The fit meter](/static/img/articles/fitmeter-re-1/fitmeter.mpo "Wii Fit Meter on a table")
The Fit Meter is a small device made by Nintendo as an accessoire for Wii Fit U. It keeps track of your steps, your activity and your altitude. It syncs up with the game, where it can display more detailed graphs than the device itself can display. You can also unlock costumes for your Mii in the game, by walking certain distances and climbing certain attitudes.