Today, while i was desoldering some parts from a laptop motherboard i came across a strange chip, at least strange for me because i never saw anything like this before. The chip is labeled LF-H80P, i did a quick search on google but nothing interesting showed up.
At first glance, the chip looks perfectly normal, but when you look on it’s back you can see four inductance windings:
The sensor ports on the NXT support a serial digital protocol called I2C, which was developed by Philips in the 1980’s for use in consumer electronics (in television sets, for example). This article describes the use of a simple I2C chip that provides 8 digital I/O ports with the NXT.
Each one of these eight ports can be used as either input or output (and in some restricted ways also as both). These inputs and outputs are binary: they are either on or off. Input ports can be used for touch sensor (switches), for example. Output ports can drive LEDs, and through relays or other devices they can turn motors on or off. In the setup that this article describes, two ports are used to drive LEDs, two other ports are used as inputs, connected to push switches, and four ports remain unused.
Interfacing I2C Chips To The NXT: [Link]
Every gadget gets hacked sooner or later, it’s just the way things go. Some people get bored and can’t help themselves not hacking something to make them different, unique. In this case, you’ll be learning how to install a Wii modchip.
The WiiKey modchip doesn’t actually go on the Wii’s motherboard, but the DVD drive’s motherboard, effectively sitting between the DVD subsystem and the Wii’s DVD interface, and it tells the Wii that any disc inserted into the drive is an authentic disc of that Wii’s region. The Wii never suspects that the DVD drive is lying, and that’s why the modchip allows you to play backup up games, homebrew, and so forth.
How to install a WIIKey Modchip: [Link]