A small gadget that uses an OLED display and the FFT library to generate the audio spectrum. Add a pinch of life to your music.
Project tutorial by janux
Use Arduino, an OLED display and an AD9833 DDS module to create a useful wave generator for your lab.
This project is similar to my previous one but uses the FHT library which turns out to be at least 4 times faster than the FFT.
Playing polyphony 'happy birthday' theme on Arduino Nano with three buzzers on a single mini breadboard.
Project tutorial by Liss
Low cost smart vitals wearable which can help in early detection of COVID-19 in front line workers
Project tutorial by Vishwas Navada
This project is for making a 32-band audio (music) frequency spectrum analyzer / visualizer using Arduino.
Project showcase by shajeeb
Of course, thank you for resurrecting and sharing this historic project.
I made a version with a stand alone ATMega328P and a 1602 display, it works quite well but I have a couple of questions:
1) Measurement of capacities: The number of the first test terminal is duplicated immediately after the second terminal: as shown in the attached image, by connecting a capacitor between T1 and T2 after the "2" "1" is repeated. If I connect the capacitor between T2 and T3 after 3 the number "2" is repeated. In the code I could not find where the second terminal is printed to try to understand what the error could be.
2) Where is it possible to enter the correction values to carry out the calibration of the resistance and capacitor values using precision components measured with a bench multimeter?
3) I could not get the 1602 display connected via I2C to work, and reading the other answers it seems to be a common problem for many.
Can you explain what are the parameters to modify in the Makefile.h file to correctly configure the display via I2C?
Thanks for the replies
PS Maybe someone can be useful, at the following links you will find the PCB in 1: 1 scale and the arrangement of the parts.
WOW very very very nice! You did an amazing job!
Unfortunately I don't have a lot of time to devote to the mechanical construction and basically this project was born to experiment with Arduino and with LED matrices rather than to create a real living room device like you did. A really great job, congratulations!
Sorry for the long response time.
I found that the notification emails ended up in spam.
Regarding the libraries I have included in the comments the link to be able to download them, I do not think it is difficult to do this.
If you still need help just let me know.
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