Introduction: Morse Code Generator for the 16x24 HT1632C LED Matrix- I Made It at TechShop

Picture of Morse Code Generator for the 16x24 HT1632C LED Matrix- I Made It at TechShop
In this instructable I'll detail how to use the HT1642C LED Matrix from Adafruit to make a Morse code generator that both flashes a letter and plays a buzzer corresponding to the Morse code equivalent.

To make the box for the matrix, take a look at my previous instructable.

Here's a video demonstration the end result:

I made this project over at TechShop (

Step 1: Materials/tools

Picture of Materials/tools

16x24 HT1632C LED Matrix
Wire/ hook-up wires
8-ohm speaker

Step 2: Wiring Everything Up

Picture of Wiring Everything Up

Next we need to hook everything up. Refer to the official instructions for wiring up the matrix, I used the same pins in this exercise as well. We'll also need to connect a speaker to pin 8. That's all we need so connect it to a computer and get ready for some programming!

Step 3: Upload the Program

Picture of Upload the Program

You'll need to download the official library here and put it in the correct folder in your Arduino directory to continue.

The code's really long so I won't paste the whole thing here, I've attached it as a file to download and plug into Arduino. I uploaded two variations: one that plays the alphabet sequentially and another that cycles random letters. The code's a ton of copy/paste and isn't too complicated, but if anyone has any specific questions I'll be happy to answer them in the comments.

And that's all she wrote! There's a video of it in action in the intro of the instructable. Thanks for reading!


pepetito (author)2013-05-27

what would be cool if you had a morse code remote that you press the the letter on it and it flashes an infrared led that is aimed at a reciever connected to an arduino and the arduino converts it to letters and displays it on a matrix

erica1988 (author)2013-05-23

Beautiful, I like.
I f you want chip crack, touch me.

erica1988 (author)2013-05-23

Beautiful, I like!

eXtremeSomething (author)2013-05-23

Morse Code and letters at the same time, this man is a genius!!! Redundancy ftw.

About This Instructable




More by khietman:Morse code generator for the 16x24 HT1632C LED Matrix- I made it at TechShopMaking a box for your 16x24 HT1632C LED Matrix- I made it at TechShopControl Arduino functions with a USB controller, no soldering required- I made it at TechShop
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