Robotallic : a locomotive robot using smart-materials as actuators


This is an Alpha version of the report as it will be changing over time, please keep that in mind while reading.

Microrobots can perform various functions by interacting with the
surroundings for medical, military, industrial, or environmental purposes. One of the major challenges faced by microrobotic engineering is a lack of micromotors/stepper motors to drive robots, thus making them unable to generate motion, Among many attempts to address this issue, I pay special attention to smart materials/materials because it is easy to generate motions and deformations with a very simple structure, unlike Robots relying on the complex of motor systems, or Actuators…etc.

How to Make Your Own Capacitor

I will discuss the following:

  • Material used, the surface roughness and structure.
  • The material Preparation and making steps.
  • The testing and the capacitors tolerance.
  • Difficulties and interesting results.

# Material used, the surface roughness and structure:

Capacitors are made in many different ways, some of them are made from Tantalum Electrolytic, Aluminium, Ceramic, plastic and many more, and we were acquired to use Aluminium foil as plates and plastic & paper as dielectric. Using the materials as they are frame shop wasn’t a good idea.

As shown in the picture 1.1 the Aluminium foil is dirty and full of pumps drown from the manufacturer;

The roughness of the material now is High and smoothing must be down to make a good contact with the dielectric material .
Another example,the dielectric before smoothing, clearly we can see a lot
of pumps and dirt.

Audio Amplifier

class A amplifier is properly the pest choice for an easy cheap signal amplifier spicily when comes to sound, it’s able to sport a great range of frequency’s and could drive a good ohm speaker, also is good to mention sometimes a better option like class T which is paced on AB class but it is out of this scope.

Op-amp or so called operational amplifier is a DC-coupled high-gain voltage
amplifier which was devolved by Karl D.Swartzel Jr. in Bell labs has
differential input and usually a single ended output.

 The specific application of the op-amp is to amplify signal, in the past they were used in analogue computers to perform mathematical operations in many linear and non-linear and frequency-dependent circuits. Speaking of amplifying, in this work we were assigned to design and simulate a functional electronic circuit that is based on operational amplifier, and the circuit is one which will take human voice through a microphone and then amplifying it so that we can drive a speaker to hear the voice coming from the microphone.

Continue reading “Audio Amplifier”