Arduino Projects and Circuits
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When controlling motors with a microcontroller (like shown), the snubber is really pretty important. I haven`t seen this configuration, though, and typically the snubber is placed across the motor itself. The general idea is that there is charge that builds.... -
I built my own Lo-fi Arduino Guitar Pedal. I`m even using a similar enclosure work tossed out a couple of thinwire->twisted pair converters that I snapped up. I think the only major deviation is that mine only has one output at present- I could add a second.... -
A Darlington would perform even better, but the circuit would be slightly more complicated. (See the schematic at bottom-right. ) Fortunately, the added complexity is inside the part! The reason for the Darlington`s superiority is that it can provide the.... -
A circuit and arduino code to approximately emulate a ScratchBoard ; there is sound, light, a button and four sliders but it isn`t a drop-in replacement. remember to change the COM ports in the Arduino IDE and in Scratch so that they are not competing (if.... -
The kit includes the following items (depending on which bootloader chip 16MHz or 8MHz) The kit includes the essential items to create your own Arduino 328 board. Here is a breadboard with all the components mounted and running the demo led flash program You.... -
With a rotary encoder we have two square wave outputs (A and B) which are 90 degrees out of phase with each other. The number of pulses or steps generated per complete turn varies. The Sparkfun Rotary Encoder has 12 steps but others may have more or less..... -
A Light Dependent Resistor (LDR) to create a simple childrens bedroom nightlight which turns on automatically when it gets dark and turns off when it gets light. An LDR`s resistance changes depending upon the amount of light hitting the sensor. For the LDR.... -
I love the Arduino as a simple and accessible controller platform for many varied projects. A few months ago, a purchased an Ethernet shield for my A.... -
For relatively small (less number of pins than ATmega328) projects, ATtiny series, ATtiny45 or Attiny85 are good choice in terms of its physical size.... -
Generate sound or output analog voltages with an Arduino. This Instructable will show you how to set up a really basic digital to analog converter so.... -
Ever wanted your home entertainment or sound system to power up itself when plugging in your iPod or other portable MP3 player? Watch this video to s.... -
Start to build the circuit as pictured in the schematic. To see the schematic larger, click the little i in the upper right-hand corner of the image.... -
This Arduino-powered vocal effects box pitch shifts and distorts incoming audio signals to produce a wide variety of vocal effects. This project is my first experiment with real-time digital signal processing using Arduino. It samples an incoming microphone.... -
I`ve broken the schematic into three parts so it is easier to understand. The first schematic shows the audio out circuit. This project outputs audio.... -
Hi guys this is my first tutorial, I`ve just started a few months ago learning electronics (previously I`ve just knew how to program in C and Python).... -
If your are like me which I am guessing you are, then ever since you got into doing stuff with arduino you have wanted to make your own arduino board.... -
Here`s a handy Arduino shield: we`ve had a lot of people looking for a dedicated and well-designed data logging shield. We worked hard to engineer an inexpensive but well-rounded design. Not only is it easy to assemble and customize, it also comes with great.... -
This is a fairly simple schematic of the amplifier and filter. At the core of the circuit is an LM124 op-amp running in an inverting configuration. Th.... -
2N3904 is the NPN transistor. Looking at the flat face, the left lead is Emitter (pin 1 in schematic), the middle lead is Base (pin 2 in schematic), the right lead is Collector (pin 3 in schematic). Another end of 50 Ohm resistor to +5v pin on Arduino. (An.... -
The Arduino Internet Gizmo consists of an Arduino, a RFID card reader, a bunch of LEDs and other components mounted in a recycled PC power supply case.... -
Since I have read an article on todbot blog, I bought a couple of Wii Nunchucks from ebay. I don`t remember how much I paid for them, but it was much.... -
Powerful for its size and cost, and extemely easy to learn and use. I spend a fair amount of time zipping around townon my scooter, and thought it would be cool to add a voltage monitor to warn when the battery might need recharging. Waiting until the.... -
Why would you want to use the Arduino library with another IDE It helps organize your code (especially for large projects), is easier to implement other code not written specifically for Arduino and can be a gateway to more powerful programming tools and.... -
This has been supplanted by the SD library built into the Arduino IDE. The only good thing about it is that it will (barely) fit and run into a `168 Arduino so if you happen to be stuck with a `168 and can`t upgrade, this code may be handy. Otherwise, please....
New Circuits
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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.....
Popular Circuits
Soundblaster soundcard series (SB16, SB32, AWE32 and AWE64) have all a microphone input designed...
Amplifying and limiting of the AM carrier is accomplished by the if gain block providing 55 dB of...
The simple circuit transforms the steady beep of an audible-signal device, such as a Mallory...
This circuit is average reading use rms calibrated AC voltmeter. Deletion of C2 removes the...
7 feet for loudness compensation control terminal, the foot plus the DC control voltage can be...