EL Shield


This shield is used to control EL devices. It can control 4 EL devices simultaneously. The controlling method is as simple as controlling an LED. Driven by PWM, it can create a colorful and florid effect by controlling each EL wire with a simple program. Combined with our EL Inverter, it can drive an EL wire as long as 15m, which provides infinite possibility for your design. Besides, the Shield is covered by Acrylic board, which enhances user’s safety.


  • Operating Voltage: 5V
  • Invertor interface: JST 2.0
  • Control channel interface: 2P - 2.5SM socket

Hardware Overview


Here is a simple demo involving EL shield, 4 EL tapes and the custom invertor that accompanies EL shield. Hook all things up as in the picture below.

Upload the code below to your microcontroller.

// EL test code 
void setup(){
 for(int i = 4; i<8; i++)
  pinMode(i, OUTPUT);
void setEL(int ch) // set a certain EL on
 for(int i = 4; i<8; i++) // all off
 digitalWrite(i, LOW);
 digitalWrite(ch+3, HIGH); // ch on
int count = 0; 
void loop()
 setEL(count%4 + 1);
 if(count++ == 1000)
  count = 0;


Help us make it better

Thank you for choosing Seeed. A couple of months ago we initiated a project to improve our documentation system. What you are looking at now is the first edition of the new documentation system. Comparing to the old one, here is the progresses that we made:

  • Replaced the old documentation system with a new one that was developed from Mkdocs, a more widely used and cooler tool to develop documentation system.
  • Integrated the documentation system with our official website, now you can go to Bazaar and other section like Forum and Community more conveniently.
  • Reviewed and rewrote documents for hundreds of products for the system’s first edition, and will continue migrate documents from old wiki to the new one.

An easy-to-use instruction is as important as the product itself. We are expecting this new system will improve your experience when using Seeed’s products. However since this is the first edition, there are still many things need to improve, if you have any suggestions or findings, you are most welcome to submit the amended version as our contributor or give us suggestions in the survey below, Please don’t forget to leave your email address so that we can reply.

Happy hacking