The idea is to create a Master Writer/Slave Receiver configuration which will allow each individually programmable LED strip to synchronize to the beat of music playing via a speaker while reducing any noise in the environment. The Master Writer/Slave Receiver configuration via the i2c protocol will be connected to a bluetooth speaker, two unit controlled strip LEDs which concurrently light up with the beat/bass of the music being outputted through the speaker recorded by Piezo vibration sensor, and the synchronization mode will be controlled in a separate unit via the user through a button system.
The first Arduino will be in charge of displaying the mode of the LED strips on a LCD display. Modes may be “Fully light” and “Bass Sync”. “Fully light” mode will light all the unit led on the strip; this mode is meant to just light up the room. “Bass Sync” mode will sync the led strips to light up to the music on a speaker via vibration reads. The second Arduino will be in charge of the reading from the vibration sensor, which is connected to the speaker. It will also send the data (reads) to the third Arduino. The third Arduino will be in charge of the led algorithm which lights up the LED strips. It will also incorporate a touch sensor to turn the strips on.
All functionality could be supported by one ardunio. However, I eventaully want to push an update that allows communication via Wifi. So separating functionality was my intial design.
● 3 breadboards
● 3 Arduino Uno’s
● 3 X 220 Ohms resistor
● 1 Liquid Crystal Display(16 X 2)
● 1 button
● 1 JBL speaker
● 1 Piezo sensor
● 1 Individually Addressable LED Strip Light 5050 RGB
● Two power supplies (If limited, use two laptops for power supply)
● 20+ Wires
A master-multi-servent system is in place. Implement this system using the Wire library (wire.h). The master arduino is the arduino with the LED algorithm. The arduino with the vibration sensor was given a servant ID equal to 9. The arduino in control of the system mode was given a servant ID equal to 8. The reason for this design is to have control of when data is being transferred instead of spamming data. Ever time the master arduino’s data needs to be updated, it simply will request the appropriate data bytes from both servants. The wire connections to support this functionality is shown below.
NOTE: This is a new board
Black wires: Ground connection
Green wires: A5 connection
Purple wires: A4 connection
This arduino lights the led strip accordingly; based on the Mode and Amount data it receives from the servant arduinos. This arduino continuously request the data from the servants. It is in charge of implementing the different modes (fully lit, bass sync, and off). It is capable of doing so by the FastLED.h library. The wire connections to support this functionality is shown below.
NOTE: These wires will connection to the LED strip. All led strips have three connections; one for ground, one for data (I choose pin 5 for data transfer to led), one for 5v.
This arduino simply takes data from the vibration sensor and converts it into the amount of leds to light up (via map function). Whenever the master arduino requests an update, the arduino simply sends the amount (int) via Request() function. The wire connections to support this functionality is shown below.
NOTE: Due to limitations, the vibration sensor in the diagram does not exactly resemble the piezo vibration sensor. The piezo vibration sensor has an additional connection (green wire). The addition connection is for analog reads from the sensor. (picture shows a vibration monitor not a piezo sensor)
This arduino keeps track of which mode the user has selected. This arduino also displays the current mode on a 2x16 LCD. When ever the master arduino requests an update, the arduino simply sends the mode (int) via Request() function. The code is debounce safe (no false reads from button). The wire connections to support this functionality is shown below.
https://www.arduino.cc/en/Reference/LiquidCrystalhttps://somtips.com/connect-lcd-display-with-arduino-without-i2c-module-pot/ https://www.instructables.com/id/Arduino-Interfacing-With-LCD-Without-Potentiometer/
https://github.com/FastLED/FastLED https://github.com/octref/LatticeSnake/blob/master/photon/include/FastLED/FastLED.h
https://www.arduino.cc/en/Tutorial/MasterWriter https://www.arduino.cc/reference/en/language/functions/communication/serial/