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Description: We’ve heard you, and made a number of improvements to our EL Shield. The new version adds zero-crossing optoisolated triacs for noise-free operation and full isolation between the AC and DC sides, and includes a 1.5A adjustable linear regulator to supply regulated DC to an external inverter (not included).
The SparkFun EL Escudo Dos is an Arduino shield for controlling up to eight strands of electroluminescent wire. EL wire is flexible plastic cord that glows brightly when high-voltage AC is applied to it. It’s available in numerous colors (see the related products below), runs cool, and requires very little current, but can be difficult to work with because of the high-voltage requirements. The El Escudo Dos contains circuitry to safely switch high-voltage AC on and off, allowing you to create animated displays or whatever else your imagination can come up with.
In addition to this shield, you will need Arduino headers (see the related products below), an inverter (a component that generates the high-voltage AC needed by EL wire), and the EL wire itself. SparkFun carries two inverters, a 3V-input version that can drive a few feet of EL wire, and a 12V-input version capable of driving dozens of feet of EL wire. Choose the one appropriate to your power source and driving requirements. The shield’s built-in regulator comes preset to 3.3V, but can be set to any voltage by changing two resistors, or bypassed with a solder jumper to send the Arduino’s RAW voltage directly to the inverter (perfect for 12V setups!). See the tutorial below.
Based on 4 ratings:
Intermittent issues where an EL wire stays on even when logic says it should be off. Have LED wired to same pin which shows proper logic. Ordered 2nd board which had the same issues on different pins. Found that I could hide the problem by turning all EL segments off, then turning them back on.
Hi, This sounds like it could be a couple of things causing your issues. Please contact us at techsupport at sparkfun.com for more assistance.
works just as i wanted them too perfect for my project and good price
It worked surprisingly well for Arduino shields! half of the ELwires behaved differently but I suspect that’s not caused by the Escudo Dos. A recommandation for sensor input - ELwire output installations!
I purchased two of these for student EL Wire projects in my classroom. One group had a basic EL Wire sequence powered from a 12V input up and running in under two class periods. The coding involved is simple and easy to modify for different effects and patterns. The second group messed up on their initial soldering and had to do some significant work to fix their mistake. Not sure if they messed something up in the re-soldering process but this board’s “DC to Inverter” port will now only throughput a max 3V which is barely enough to light up the EL wire. We ended up having to bypass this port altogether and power the inverter and the Arduino board separately to get it to work. Overall, a fun little shield that allows for fairly complex EL wire projects with minimal difficulty.