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I've always liked these type of bubble displays and have picked up various ones over time.  Recently I decided to put some to use and so built this to test them out.

 

The goal was to get 4 of these displays on a board and control them with an ESP32 so as to allow some network based functionality for it.

Here's some pics of what these displays look like:

 

 

 

The datasheet for these things describes how to arrange four of these things for a total of 16 digits.

 

Seemed pretty straight forward so I decided to make it.

 

Next page : schematic and circuit board.

 

 

 

 

 

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