The talking Yoda head consists of a Yoda mask and a microcontroller system to achieve the desired operation/effect. The basic operation of the project was specified as follows: The head was to be placed inside a closed box. Upon opening the box, the light sensor sends a signal to the microcontroller which, in turn, activates the ISD1000A to play message number one. The audio output is fed back into an A/D converter and processed in the microcontroller to make the mouth mechanics move via servo control. When the box is closed again, message 2 is played. Upon reopening of the box, message 3 is played and then message 4 is continually played until the box is closed again. When the box is closed again, the system resets and prepares to play message 1 again when the box is reopened.
Click here to download the full size of the above Circuit.
This project was born from a bad incident involving e-mail and Yoda. It was created as a practical joke for a fellow co-worker moving on to other aspirations. Because of a short time frame and eagerness by those involved, this project was completed in an amazing six days. These plans are not to be copied or distributed, in whole or in part, without the express written consent of one of the project contributors. However, we give full permission to anyone that wishes to download and print out one, and only one, copy of these plans for personal use. No permissions are given, nor will be given, to anyone wishing to use these plans commercially. This project, nor the people involved, are in no way affiliated with Lucas Arts. This project was completely voluntary. The Analog-to-Digital converter used in this project is the TLC548. This is an 8-bit A/D converter which sends its data serially back to the microcontroller - one bit at a time. The retrieval of a data sample is quite easy and only requires 3 data lines - two for control and one for data input to the microcontroller. To retrieve a data sample, the CS line of the A/D converter must be set low (this starts the data retrieval). 1.4 uS after the CS line goes low, the Most Significant Bit (MSB) of the 8-bit sample will appear on the data output pin of the A/D converter. To get the next 7 data bits, the CLK pin of the A/D converter must be set high (for at least...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: