The Boarduino`s small footprint made me want to see how small of a device I could whip up in an hour from some fairly complex components. So I decided to see how small the combination of a Boarduino, a Wii Nunchuck, and a hobby servo motor could be. Here`s a little video of the result. The Wii Nunchuck is an amazing piece of technology. For $20 yo
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u get a 3-axis accelerometer, a 2-D analog joystick, two buttons, and it`s all accessed via the standard I2C protocol. A hobby servo is another piece great tech; only one wire is needed (besides power & ground) to specify the angle the motor should turn to. And both of these devices can plug straight into a Boarduino or Arduino board. The Boarduino is small programmable microcontroller and is an Arduino work-alike. It uses the same programming software as Arduino and can substitute for an Arduino in any Arduino projects. A Boarduino might be better for you if want a smaller and cheaper Arduino and don`t like running wires between your Arduino and a solderless breadboard. The Boarduino is made to be plugged into a solderless breadboard. This ends up being cheaper than the standard Arduino prototyping solution of a shield board that plugs onto the top of an Arduino board, especially if you do lots of projects. The Boarduino does cover up a substantial part of a breadboard. If this bothers you, there is the Bare Bones Arduino clone from Modern Device. One of the ways Boarduino is so tiny is that it omits the USB-to-serial interface chip that is part of every Arduino board. Having that always present is really convenient, but it takes up space. The company that makes that chip, makes a cable that with the chip embedded into it. Adafruit sells this cable, cheaper than anywhere else if you buy it with a kit. If you have...
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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