In this Arduino-based project, we will build a lamp with multiple light displays: color sequencer, dimming light, color chaser, firelight all selected by a touch bar on the circuit board. We will be going the minimalist way for this project, filling the board with just a microchip, the LEDs, a handful of resistors and some capacitors, all for
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under $10, along with the necessary connecting hardware. The circuit will be using 3 RGB LEDs. These arecommon-anodePiranha type available here and contains three LEDs within its body. Each color will need a single dropping resistor (220-ohm for green and blue and 330-ohm for Red). We can also add a small LED with a 1k-ohm as an indicator. The IC we are using is an ATMega-328 microchip, available for about $5 here You will also need a 16Mhzresonatorfor about 35c, also available at the same site. The development and testing of the software is done using the Arduino system, so a suitable host` is necessary. I`ve used an Arduino Nano`, a Boarduino and a RBBB board and they all work fine. It is averygood idea to put the microchip in a socket. Here, I`ve used 2 x 16-pin sockets end-to-end, because that is what I have available The ATMel chip only has 28-pins so we`ll have a few empty sockets on the end. After I`ve done the preliminary wiring, the circuit (and programming) is tested through jumpers connected to the host`, an RBBB (Really Bare Bones Board), also from Modern Devices. This lets me make sure the wiring is correct before we commit the Microchip. A major effort-saver is the use of Teflon wire, which does not melt even when routed close to soldered parts. Teflon wire is also available silver-plated which allows me to use thinner wires (#28) and still handle the current. These wires can be found here on eBay. The wiring...
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....
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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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