Vacuum Tubes Valves
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Human Sensing Circuits
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AC to DC & DC to DC
Solar Cell Circuits
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Data Bus Circuits
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RF Converter Circuits
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Video Wall circuits
TV Video Circuits
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8051 / 8052
PCB CAD Software
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555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
DIY PMA alternator
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Digital Signal Integrity
Digital & Bipolars
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Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
ultrasonic sensor interfacing with 8051
If you want to make your robot sense the objects in it`s surroundings i suggest you to go for an ULTRASONIC sensor. Though the IR based sensors are cheep, their working range may vary due change in ambient light and won`t give accurate range values. In case of ULTRASONIC sensors they work based on the principle of RADAR(RAdio Detection And...
90s2313 avr robot board
electronic millipede robot
spider robot electronic project page
robotic vacuum cleaner
We decided to design and build a robot capable of vacuuming the floor of a room or area without any human interaction other than just starting the unit. We realized the need for a cheap and convenient product that can be easily used to vacuum a room on its own, saving a person valuable time. The robotic vacuum is mainly built
celphone operated land rover robot
The robot is controlled by a mobile phone‚ that makes a call to the‚ mobile phone attached to the robot. In the course of a call, if any button is pressed, a tone corresponding to the button pressed is heard at the other end of the call. This tone is called DTMF (dual-tone-multiple-frequency). The robot perceives this DTMF tone with the help of...
This circuit controls the switching of the street light or porch light and it will be automated. This circuit of automatic lamp controller using 7806 regulator IC can be used to automate street lights, tube lights or any other house electrical lightning systems. The IC 7806 is a voltage regulator IC that give a steady output voltage against widely
12v stroboscope 250 400v dc circuit
The stoboscope tube needs about 250-400V DC to operate. This aerial voltage is generated application simple voltage footfall up ambit congenital from transistors Q1, Q2 and agent T1. This ambit gives out about 230V AC voltage which is again rectified with afterlight arch U1 (must accept at atomic 400V voltage rating) and stored to the capital capac
large dancing robot using pic16f877a microcontroller
Large Dancing Robot Build a large dancing robot. This was supposed to be a walking robot, but it more kinda beebopped around. video on last step. Build a P..
line following robot using pic16f84
Design Goal: The JavaBot1 is a small line following robot designed to follow a black line drawn on a dry erase board. It is designed to follow very tight c..
rf modem robotics project using pic16f84 microcontroller
RF is just way too cool not to use in your designs. But if you`re a newbie like me it is difficult to successfully build solid RF transmitters and receiver..
tiny remote for irobot roomba using pic12f629
The Tiny Remoteis a very compact infrared remote control with only two buttons to control an iRobot Roomba. It produces three different infrare..
citroen robot dance
dc motor driver h bridge circuit
servo motor and dc motor control
K`nexapod is a hexapod robot built with K`nex building toys and controlled by a PICAXE microntroller. Propelled by small hobby servos it can move forward, backward, and make turns. It is equipped with an ultrasonic sensor and follows a simple algorithm to wander about while avoiding obstacles in its path..
line follower robot circuit schematics
ir sensors from scratch line follower
To get a good voltage swing, the value of R1 must be carefully chosen. If Rsensor = a when no light falls on it and Rsensor = b when light falls on it. The difference in the two potentials is: in presence of light and a very large resistance in absence of light. We have used this property of the sensor to form a potential divider. The potential...
The headlights and photo cells will face the ground, so I find it easiest to imagine that the whole circuit is upside down Why 3 LEDs per side As far as I can tell, because you can`t power three in series from a single 9V battery without a little help, and this way Cook could include transistors in the circuit. The robot`s thinking is simple....
Mostly everything has been put together for the electrical portion of the project. Serial communication is almost working and will be used in conjunction with a Teensy 2. 0 chip to communicate through serial USB and the mega128. A TTL UART serial driver such as the MAX232 needs to be purchased in order to communicate between teensy and mega 128....
agriculture based robot e project
A prototype model of Agriculture Based Robot . Till recently the farmers were using age-old instruments in cultivating their lands. They themselves were putting the manuallabor. Hence there was thelabor problem. Farmer`s facing this type oflaborshortage. Because, now the youngsters are attracted by the city life & jobs in the towns. The...
This page contains circuit diagrams and code for a walking robot I made using Mark Tilden`s nervous network along with my own tinkerings like the reverser and brain circuits. Construction is a bit odd, chips with pins bent flat with wirebits and parts in-the-air within about a 1. 2" by 1. 5" by 2" space with a gearmotor at either end, a cordless...
A hexapod walker robot that uses three servos. It uses a Parallax Basic Stamp I for its brains, and let me tell you, its all this controller can do just to make the bug walk! Walking is MUCH more complex than just rolling! I will have more details and pics soon. The body of my hexapod is made from plain Radio Shack protoboard, no copper or...
I decided to build an infra-red object detection system using High Output IR LEDs. For the controller of the robot I used the Parallax BASIC Stamp I. The latest greatest version of the software, at least as of 10/9/98, gives IRBOT three modes of operation. The default mode just does object avoidance, fun in itself, but I wanted more. So I added...
line following robot sensor
This Line Following Robot sensor or surface scanner for robots is a very simple, stamp-sized, short range (5-10mm) Infrared proximity detector wired around a standard reflective opto-sensor CNY70(IC1). In some disciplines, a line following robot or an electronic toy vehicle go along a predrawn black line on a white surface. In such devices, a surf
how to make solar powered robot
It is based on the Miller solar engine and has no digital electronics involved. But before we get started, it must be said that a robot is defined as "a mechanical intelligent agent which can perform tasks on its own". Note that the definition does not state that it has to be in a particular `form`! So, though the robot we are going to build...
rf based remote control robot
search and rescue robot
to verify schematics for 2 motor robot
Constructing a robot or should i say a vehicle dat uses 2 motors. I managed to get sum referance regarding d schematics for the circuit design but the current schematics uses a smaller motor. which draws less power and uses a much less power supply. the schematics is in the link below. i need to use a much powerful motor and provide more power...
maze robot sensor integration
This project was completed during a course on robotics taught by Prof. Dave Barret at Olin College. The final project for the course, the goal of the project was to navigate a maze using a Surveyor robotic platform. As part of this project, additional sensors were added to the robot. This writeup will focus on the addition of the sensors because t
Stepper Motor Circuits
Remote Control Circuits
Direction Finder Circuits
Power Control Circuits
Motor Control Circuits
Ultrasonic distance finder circuit
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 measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
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 find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
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 circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
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 circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
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, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
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 calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
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 supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
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. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity