Light Speakers

From BUILDS

Revision as of 00:55, 25 May 2012 Cwoodall (Talk | contribs) (→Version 004) ← Previous diff		Revision as of 20:52, 2 June 2012 Cwoodall (Talk | contribs) Next diff →
Line 1:		Line 1:
-	==Mission==	+	== Overview ==
-	To create a speaker that outputs light instead of sound.	+
-	===Next Steps===	+	Light Speakers receive an audio input and toggles a SSR (Solid State Relay) with the "beat". The light speaker accomplishes this by amplifying the incoming sound, filtering the sound with a bandpass filter for the desired band and then putting the output of the filter through a "peak" detector which will turn on the relay for a longer period of time when something gets through the filter.
-	* replace mechanical relay with solid state one	+
-	* make and order PCB boards	+
-	==Beta Testing==	+	== Electronics ==
		+
		+	Schematic and PCB files are available on [https://github.com/cwoodall/LightSpeakers github].
		+
		+	=== Block Diagram ===
		+
		+	==== Amplifier ====
		+
		+	==== Band Pass Filter ====
		+
		+	==== Peak Detector ====
		+
		+	=== Schematic ===
		+
		+	=== PCB Board ===
		+
		+	=== Parts List ===
		+
		+	== Prototyping ==
	=== Version 004 ===		=== Version 004 ===

---

Revision as of 20:52, 2 June 2012

Contents 1 Overview 2 Electronics 2.1 Block Diagram 2.1.1 Amplifier 2.1.2 Band Pass Filter 2.1.3 Peak Detector 2.2 Schematic 2.3 PCB Board 2.4 Parts List 3 Prototyping 3.1 Version 004 3.2 Version 003 3.3 Version 002 3.4 Version 001 4 Team

Overview

Light Speakers receive an audio input and toggles a SSR (Solid State Relay) with the "beat". The light speaker accomplishes this by amplifying the incoming sound, filtering the sound with a bandpass filter for the desired band and then putting the output of the filter through a "peak" detector which will turn on the relay for a longer period of time when something gets through the filter.

Electronics

Schematic and PCB files are available on github.

Block Diagram

Amplifier

Band Pass Filter

Peak Detector

Schematic

PCB Board

Parts List

Prototyping

Version 004

Semi Complete May 24, with Solid State Relay.

BOM coming soon along with PCB board and a finalized schematic.

Version 003

Completed 12 May 2012

This time the LED is replaced with a relay switch which AC powered lights can be plugged into.

Version 002

Completed 12 May 2012

This version still only lights up an LED, but it also does a better job of filtering out noise so that the on and off is much crisper.

Version 001

Completed 12 May 2012

This circuit passes the signal from a audio jack into an LED based on the amplitude of the signal alone. It works. The potentiometer determines how low the bass must be to be let through.

Team

• Chris Woodall
• Rusty Shomberg
• Patrick Ehrlicher
• Tom