More SPI 4-digit seven segment LED displays are available
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Four digit SPI 7-segment LED displays are back in stock now on Tindie. The board has been revised from its earlier version and now contains an additional header connector to cascade multiple displays. The new header provides access to DOUT pin of MAX7219 driver IC. If you want to add a seven segment LED display to your project without giving up too many I/O resources, this board allows you to do that using only 3 I/O pins and it costs only $10.
Assembled board
SPI 7-segment LED display kit is only $10
Tindie buying link for SPI 4-digit seven segment LED display
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