Robotic Circuits
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The circuit is light seeking; it will follow a flashlight around a darkened room. A pair of photocells determine the direction in which the robot will move. Each photocell is connected to an op amp configured as a comparator. When sufficient light falls on.... -
Figure 2-33 (a) is the action schematic diagram of the robot closing to the object. When there is no objects in front of the robot, it will go forward in the straight line; when there is an object in left or right side of the robot,it will turn left or right.... -
The remote control robot circuit is as shown in the figure. The figure 2-36(a) is the circuit diagram, the figure 2-36(b) is the operating timing diagram. The rotation process of the rebot is: in the circuit, the ultrasonic launching circuit is composed of.... -
A sample robot, using parts from VCRs and bought only the minimum necessary to make the simplest robot I could think of. At the time I was using the Nemesis microcontroller, produced by Kronos Robotics, however this was not a good choice for Romania, because.... -
This tutorial details the construction of a simple and low cost robot. The robot is mainly a line follower but can also be used as a photovore, a photophobe, and obstacle avoider!And all this for less than 40$. The best part is that the robot does not use.... -
This device has been designed as an example application of an expandable system of modules for building mobile robots following the standards set out in the discussion on the Society Of Robots forum. These modules can be connected to each other using an i2c.... -
The brain of the robot is made of Atmel Tiny2313 microcontroller. This MCU has a cool feature called In-System Programming which can be used to program memories of the MCU with almost-no-cost programmer. I used simple programmer which connects to parallel.... -
In this project we`ll be using the ATMEGA16 @16MHz. But as every project. it must have something special, something to be able to look different from other. But what I `ve seen many robots with photosensors (photovore, photophobe), many linefollowers, many.... -
The UART, or Universal Asynchronous Receiver / Transmitter, is a feature of your microcontroller useful for communicating serial data (text, numbers, etc. ) to your PC. The device changes incoming parallel information (within the microcontroller/PC) to.... -
The most important schematic to know, one that is almost always required for every robot whether you`re a beginner or advanced, is a circuit to control your robots` power source. You cannot just hook up a battery directly to everything and expect it to work..... -
Current sensing is as it says - sensing the amount of current in use by a particular circuit or device. If you want to know the amount of power being used for any robot component, current sensing is the way to go. Current sensing is not a typical application.... -
A robot that operates when you give messages through your phone. Your mobile becomes your remote controller of your robot. Yes, it means if robot is in London, and you are in Mumbai, you can still control your robot. A super project for diploma students that.... -
The motors will be driven from the full source voltage, so make sure this isn`t going to make your robot too fast! Firebot has GM3 motors driven with a 9V battery, however the circuit differed and the motors were only driven by 5V from the voltage regulator..... -
The 2009 Robot Rally spotlighted all the flaws that result from a quick 3 week engineering and building project. Time saving shortcuts in code and hardware bit my butt several times. Failed edge detectors - Ouch! Failed beacon tracker. chomp! Ow! Line.... -
They are op-amp based filters and are most useful in the audio frequency range. These parts calculators are based on formulas and tables from the book " Electronic Filter Design Handbook " by Arthur B. Williams. Bandpass filters pass a contiguous range of.... -
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The 1-meg resistor helps protect the FET from being harmed by any accidental sparks to its Gate lead. The circuit will work fine without this resistor. Just don`t intentionally "zap" the Gate wire with a charged object or your charged finger. To test the....
New Circuits
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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.....
Popular Circuits
The input audio signal is fed to pin 3 of Ul, an LM386 low-voltage amplifier, via C3 and Rl....
This waveshape generator is basically a slow running oscillator with variable attack and decay. A...
The old common-base audio preamp, having a noise figure of 5dB is an obvious target to improve...
A Left and Right source of audio are first pre-emphasized (HPF) and then fed to adder circuits....
Voltage fluctuation is a serious issue in every home. Due to some reasons our supply voltage may...
This is a simple electronics circuit of clap switch project. If you are a beginner electronics...
The frequency measurement is one of the most important things in radio construction. Without it...
As mentioned earlier, Arduino consists of two major parts: the hardware (the Arduino board) and...
The following plans describe how to build a very small tracking transmitter that can be tracked...