What is it? The Double Bubble Backpack allows you to display up to EIGHT digits on a bright and easy to read, display - with only three IO pins! At only 1.25” by .5”, it is compact enough to fit in...Read More…
The Double Bubble Backpack allows you to display up to EIGHT digits on a bright and easy to read, display - with only three IO pins! At only 1.25” by .5”, it is compact enough to fit in a watch yet bright enough to be clearly seen several feet away – even in a bright room. It uses the popular MAX7219 chip, which allows you to stack up to eight of these little guys together on the same SPI bus. This is a great way to display data from a microcontroller to a user.
I wanted a quick and straightforward way to add visual feedback to my projects - something that I could have up and running within 5 minutes. I knew there was a better way so I came up with the Bubble Backpack, and a simple to use yet powerful library to control these displays with a few lines of code.
Hewlett-Packard developed these LED displays for its calculators and watches - designs where space and power are limited. Each digit requires only 7mW per digit yet it is luminous enough to be seen in a bright room. Partnered with the popular MAX7219 IC, interfacing with a microcontroller is a breeze and is fully Arduino compatible with libraries provided.
Any questions, concerns, or custom orders? I'm Sergio, contact me at: email@example.com Cheers!
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