ukule-LED is a ukulele with LEDs embedded in its fretboard. These LEDs can light up in configurations corresponding to different chords, which can aid the ukulele player in learning how to play certain chords, or can act as a chord reference for a more advanced player. ukule-LED has two modes of operations. First, in “play” […]
Introduction This project visually displays the frequency content of an audio signal using an 8X3 grid of LEDs. A microphone and amplifier collect analog audio input which is sampled digitized using the MCU’s analog-digital converter. The samples are buffered and and a 32 point discrete cosine transform is performed in real time to obtain 32
Frequency Visualizer Read More »
Introduction The Skittles Mini-Factory is self-contained repackaging unit that separates Skittles by color. Once separated, the Skittles are resealed in individual plastic bags. The Skittles are dispensed one at a time (either automatically or manually) onto a light sensing module. Red, green, blue, and white light are reflected off the skittle and read by
The Skittles Mini-Factory Read More »
I was testing a couple of low-cost laser diodes that come from china and I was wondering why those diodes don’t have any protection/driver circuitry. Those diodes come with a simple series resistor for current control which is not a good idea nor stable. Laser diodes are harmful and should have some sort of constant
ADJUSTABLE CONSTANT CURRENT LASER DIODE/LED DRIVER Read More »
1.1 Introduction Line following car is a system that traces black lines on white surfaces. There arevarious sensing methods available to sense these lines. The choice of these schemesdepends upon sensing accuracy and required flexibility. In my project, I have used 6 TxLEDs and 6 IR sensors to accurately calculate the position of the robot
LINE FOLLOWING AND OBSTACLE AVOIDING CAR Read More »
This past summer I had the opportunity to work for computer science PhD candidate Ryo Suzuki under the guidance of Tom Yeh of the computer science department. My task was developing printed circuit boards for experiments for human computer interaction (HCI). The goal was to create a surface which a magnet could be moved to create
Summer 2017 Altium Designer 17 Research Read More »
Welcome to my version of the LED reactive table! I was inspired by previous work using discrete LEDs, such as this one, but I figured it would be easier and more fun to use NeoPixels — programmable RGB LEDs that can be set to any color you want. The table consists of a large array of infrared emitters
NeoPixel Reactive Table Read More »
Atmel Microcontroller Programming Atmel Microcontroller Programming – A microcontroller is actually a small and typically inexpensive computer. And you can use it one to perform necessary calculations and conclusions in the uncomplicated hardware framework. Such as, the LED panels generally present in subways can easily implement utilizing a microcontroller, including the type of Atmel. In this
Types and Applications of ATMEL Microcontroller Programming in Embedded Systems Read More »
An interesting project and already much discussed in the forums and also in videos.Although it appears complex,it is a simple idea and fun very purpose. Mounting material: – 27 LEDs matte– Microprocessor ATmega8– Electrolytic capacitor 47UF 16V– Veroboard– Small wood board at the minimum 10x10cm– 50 cm wire tinned (excuse me, I’m portuguese and my
LED Cube 3x3x3 With ATMEGA8 Read More »
Greetings to HackerBox Hackers around the world! HackerBox 0044 brings us PCB Design, AVR Device Programming, Serial RGB LED Applications, Pro ESP32 WiFi OLED Development, and much more. This Instructable contains information for getting started with HackerBox 0044, which can be purchased here while supplies last. If you would like to receive a HackerBox like this right
HackerBox 0044: PCB 123 Read More »
