There is something to be said for the processes of reducing a set of objects or functions down to their lowest common denominator but I think what has really driven me to do this is I am too cheap to go out and buy an Arduino Decemila every time I want to built a new project. But really after doing quite a bit of business with the Logochips I thin
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k I understand how important it is to try to design The little engine that could do almost anything on a budget. This could be cool, and time will tell what all can be done with it. First there is the microcontroller, the brain, the Atmel ATmega168-20PU(costs about $4. 00). I should mention here that you need a way to program the bootloader into the Atmel chip. If you have a friend like Keith who will lend you his USBtinyISP and an Arduino Decemila it makes it real easy. Other wise buying one of each might be good if you plan to make a lot of clones. Next you need to provide the chip with a good 5 volt supply. I suggest the LM7805 and a couple of small capacitors(costs about 50 cents) to regulate just about any voltage down to a nice safe 5 volts for the microcontroller. If you are making a project that already has a 5 volt supply like an oldcomputer power supply you can use that or a set of 4 rechargeable batteries (AA or AAA) works well for those portable projects. Now the brain needs a clock to keep it on time. That would be this, 16 megahertz crystal resonator (costs about 40 cents). Your probably reading this post on a laptop or desktop computer that is screaming along at 1 or 2 gigahertz well, just slow down, take it easy, 16MHz is just the right speed for the serial communications between theArduino and your computer. One more thing. The brain has a tendency to fall asleep. You`ll need a 10, 000 ohm resistor (cost...
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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