Center Surround Sound (NodeMCU)
When settling speakers in to place, you are idealizing that you will always sit dead center .. yet in our more lethargic reality, we lounge off-center. As consequence, you cease being the center of the speaker array .. until now ..


Ingredients
NodeMCU ESP8266 ESP-12E V2 (2)
Digital Potentiometer (2)
5V Power Supply (2)
4 Dip Switch (2)
4 Slot Terminals (2)

Code
https://hackaday.io/project/160842-center-surround-sound/log/152358-speaker-code-each

Notations
1. Intended to create an app with MIT App Inventor .. how-ever .. per the previous HaD FP (Voice Kitchen Faucet) .. it was decided to employ an alternative favored open source (-ish) voice command software http://voiceattack.com purely as demonstration.
2. Adding additional speakers merely requires copy-paste and if-statement modifications .. tho ideally a more advanced 'find' function upon installation would be coded.
3. Variances of % may depend on wattage (See #4)
4. Higher voltage systems would subsequently require HV digital potentiometers (AD7376)
5. Why is this .. not already a thing?!

Archive
https://hackaday.io/project/160842-center-surround-sound
https://hackaday.com/2018/09/19/voice-controlled-stereo-balance-with-esp8266/

18:19:41 177-018