The beginning of the project came from an idea, an inspiration from a video posted on the Internet on the YouTube channel “I like to do things” … Then came the need to make a stand for one of my monitors that housed a clock, a digital …
Clock, Amplifier and a Little Amount of Wood… Using Arduino Read More »
We implemented an optical microphone which converts distant vibrations, including sound, to an audio signal. Measuring the reflection of a laser beam from windows or glass, it possible to hear sounds near the target. The system also includes frequency spectrum analysis with a real-time display and user-configurable ranges, and it also has an output for …
Optical microphone and spectrum analyzer Using Atmega1284 Read More »
This is a Queuing System project requested by a clinic asistant which allows the doctor enter number from a keyboard and display it on a 32×16 LED panel. This project uses two Arduino, the first Arduino functioned as a SENDER which included a PS2 keyboard and a mini LCD for number input. While the other …
I built this a short while ago as an idea to use in a primary classroom setting. Poster displays are often used by primary teachers wanting to control the noise levels in their classrooms but I wanted to add technology to make it dynamic and responsive. The motivation for this came after seeing the Adafruit …
VU Meter – LED Noise-o-Meter for Classrooms Using Arduino Read More »
Contents 1 Project aims 2 Previous work 3 Project the device 3.1 Re-definition of the complete work 3.2 Sensors Design 3.3 Microcontroller 3.4 Wireless Connection 4 Prototype realization [WIP (Work in Progress)] 4.1 Main board 4.2 USB interface 4.3 BVP 4.4 GSR 4.5 Acceleration 4.6 Temperature 5 Final review [WIP (Work in Progress)] 5.1 Microcontroller 5.2 Data link 5.3 Battery Charge, Monitor & Power On 5.4 Power On & Selection 5.5 MicroSD Storage Card 5.6 RTC …
Talk:Wireless Affective Devices using pic microcontoller Read More »
For my electrical engineering senior design project, I decided on designing a analog music synthesizer with MIDI control. I have to admit, this was what I wanted to do since high school and was my ultimate goal as a musician, artist, DIY person, and engineer. This project, in the end, will combine all of my …
MIDI-Controlled Analog Music Synthesizer Using Pic Read More »
We recently had a customer present this faulty Alchemist Forseti integrated amp for repair – I’d guess this dates from the 1990’s and has been well looked after. It’s a bit of a bruiser as you can see from the extensive heatsinking! Unfortunately it developed a DC fault on the loudspeaker outputs and destroyed the …
Alchemist Forseti APD15A RC Integrated amplifier Using Pic Read More »
Do you remember BOSS Slow Gear pedal? If your a guitarist you most likely do or at least you’ve heard of it. It was a great pedal sold from 1979 to 1982 and it was made in Japan. The pedal would cut the attack of your notes giving a swelling sound. It god famous for …
As part of our final project for ECE 4760: Digital Systems Design Using Microcontrollers, we built a guitar amplifier with remote distortion and digital effects capabilities controlled from a smartphone via bluetooth. Musicians often need to modify the configuration of their amplifiers when performing in concerts. This job is generally delegated to “roadies” who walk …
Bluetooth-Controlled Guitar FX Amplifier Using Pic Read More »
Due to its simplicity (requires minimum external components) and high availability, LM386 is very popular among hobbyists for use in low-voltage audio amplification applications. Most of the time a potentiometer is used at the input side of LM386 to provide a volume control in the output speaker. The potentiometer does not control the gain of the …
LM386 based stereo audio amplifier with digital volume control using pic Read More »
