How to hack an EL wire inverter to be controled with an Arduino.
Power sourced by arduino 3.3voltage (no batteries)
No relay required (relay have limited cycles)
This hack avoid inverter self blinking
NPN transistor = 123AP
Diode = 1N4003 or any general purpose
Step 1: Open EL Wire Inverter
just one screw to open
Step 2: Remove Power Supply Wires
not completely necessary but only one power supply is a nice to have.
if so, just remember to connect inverter negative pad to arduino, both boards need to have same voltage reference
Step 3: Diagram of the Hacking Circuit
diode is for arduino pin protection
resistor lowers the current in the base of the transistor
when high signal is provided in the base, collector shorts to ground
means transistor is inverting signal
when High signal provided EL Wire Is Active.
Step 4: Opening Connection
remove all soldering material in the second pin of the IC, make sure connection is open
Step 5: Connect Components
attach components to the EL wire inverter board as the picture reference.
make sure diode cathode (white line) is pointing to the inverter board
Step 6: Thermal Shirnk Instalation
Step 7: Pin Connections
Make sure to connect red wire to 3.3 volts pin in Arduino and black wire to ground, signal wire (orange) to pin 13 of arduino board.
download blink example sketch to test & enjoy making your own variations
Remember, the new Arduino 101 based on INTEL Curie includes accelerometer and gyroscope that can be programed to make EL Wire to glow base on movement, I'll include sketches my when I have them ready.