Robotic Circuits
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In order to create the circuitry below, you need a computer software that will control your parallel port. It will cost you about 30 US$. For example, a transistor (model number 2N2222) costs ~50, a DPDT relay, ~1. 75$ (this is maybe the most expensive....
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The infra-red receiver requires the infra-red light to be modulated at 38 kHz, this is quivalent to a period of 26 µs. The specifications on the receiver suggested using a 50% duty cycle. We found however that this did not work the way we intended. To....
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This project was inspired by a circuit that a friend of mine, Simon Field, over at Scitoys. com showed me. He had built a very simple transmitter circuit out of a 1Mhz "can" oscillator and a serial connector (see it here ) In his circuit he used a computer....
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The. 01uf monolithic capacitors will be marked `103 K` and the 15pf monolithic capacitors are marked `15 J`. It is very important that you don`t confuse the two. DO NOT take either the MOSFETs or the Integrated circuits off their protective static containers....
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You should notice that the opto-isolator LEDs are connected to three wires labeled "FWD", "REV", and "ENA*. " These wires deserve a bit of explanation. The FWD, REV, and ENA* lines are the interface between the bridge and the microprocessor. You will notice....
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Because these transistors are a complementary pair, the circuit using them is very symmetrical. The upper right and upper left corners of the H-bridge are called "sources. " This name originates from their function which is to be a source of current for the....
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For any robot to perform the tasks it is assigned, a controller is required. The controller may be mechanical, electrical, electronic or a combination of these. It is the brain of the entire system and gives the robot its intelligence. Additional....
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A robot that dances to music. G‚ Wouldn`t it be wicked cool to have a cute little robot on your desk dancing to Fatboy Slim Winamp provides a nice API for writing music visualization plug-ins. G‚ I wrote a plug-in that sends signals to the parallelport that....
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When deciding how to move the robot through the house, the designers realized that precision movement would be necessary in order to avoid touching the walls and receiving penalties. In order to achieve the required precision in movement, it was decided that....
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It uses body heat to locate and track its human master. At heart of this heat seeking capability is the Devantech TPA81 Thermal Sensor Array. The TPA81 consists of an array of eight detectors mounted horizontally. Each of the detectors is capable of....
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The wiring schematic played a big roll on the robot. This diagram is used to graphically display all the wiring of the motor controlling micro-components that gave the robot the ability to physically move forward, backward, left, right, and stop. (This....
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When the 36 kHz infrared light from the LEDs is reflected by an object, one of the receiver modules will be triggered, and the PIC16F84 µController will steer the ROBOT away from the objects by reversing one of the motors...
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The idea behind this post is to bring together some robot designs and trasform them in a new device with new hardware and standard software (arduino of course) and so easier to use. These robots have three things in common: a mechanical structure, the....
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This robot was designed as a project for secondary school pupils to build on an activity day. The chassis was provided to the pupils pre cut. The entire cost of the components per robot was just under GBP5 including the batteries. The robot is built on a....
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Originally, the tank cost around Php400 but then it was sold at around a hundred less. Without thinking twice I know I had a great offer so I decided to buy the toy. Opening the toy was quite a bit tricky. The track belt needs to be removed first and the....
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One of the motors always seem to hesitate and be on or off randomly. Also the motors are just very unpredictable in general (with this setup that is). When I use them independently they work fine without any hesitation or anything. Regarding your GPS unit,....
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Remember that the circuit will fit tightly, so you will not have to glue it. Try several times to put it inside. Modify it bit by bit, and when it enters with a little effort but does not move you have the right size. put the whole circuit inside the servo,....
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Triple check your pins on the datasheets for your chips and make changes if you need to. In my case, The RAM chip I used had a non-inverted enable on pin26, but the schematic assumed the enable was inverted. This caused the circuit not to work until I....
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The goal of the project is to create a robot that will follow a black line on a white sheet of paper and solve a maze created out of those materials. The project also included a list of specifications that were to be followed. These specifications are: The....
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The hardware schematic for the wooden menace (robotic arm) is fairly straight forward. The PIC microcontroller has one control line feeding to each servo and it also connects to the RJ45 connecter. The RJ45 connector is used for getting input from the....
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The schematic for controlling the motors is split up into three main parts, with each part having a unique functionality. The main parts used and seen in the schematic below are the 18F252, SN754410 and 2N2222 Transistors. Seen at the very top, the....
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The Proximity Sensor circuit can be seen below. Three red boxes show the additions to the circuit that we already built in Part 2: Motor Control. The new parts used and seen in the schematic below are the GP2Y0A21YK IR Sensor, Headphone Speaker and some....
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