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 object avoiders, some heat seakers, sumobots, micromouse and others. BUT, very few had a battery monitor. Most of them run on a new or freshly
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recharged battery. If the battery was drained and wasn`t simply enough capasity to feed the robot That`s why I incorporate a Dallas Semi DS2438 in my circuit board. I don`t like usually to advertise but this chip had everything. A current sensor, a voltage sensor, a thermometer and so other goodies we won`t be needing. Now navigation. Since it`ll be a simple navigator - free roaming robot (with some extra features) I`ll be using a simple IR_pair for the robot, but if I have time (aaa exams exams exams exams they are killing me!) I`ll also include a Sonar. The pair will consist of a TSOP1907 and some single IR Leds. And now it`s picture time. Since I have assebled the case years ago and don`t like to rip it up right now. I`ll be showing some basic pictures of the case of the robot explaining how it was built and which are the thoughts for the future =P. And here is the front view of the robot. As you can see the case is quite close to the ground but our subject here is not machining clearly but programming the robot behaviors. Here is the bottom view of the robot. It used to be used as a place for the batteries but as experience grow it teaches me to place the battery (and any other heavy thing) in the front of the robot to be able to climb hills with easy. But more details coming. And here is the machining tips for the wheels! I got some servo cross-like horns cutted `em to fit the inner of the wheel, placed a screw in an...
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.....
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