RGB Matrix HAT + RTC
You can make a bright display
Screenshots
Hunter's comment
This hat is the most beautiful and very snowy circuit ever built, even the 5v power supply needed to power the matrix is not included due to high currents. You need to solder some light to connect to the header. Soldering iron and solder are required.
Link
https://www.adafruit.com/product/2345
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Just for clarification of the less prone to understand what HAT means here... (no, it's not a cap, thing you put on your head...). https://en.wikipedia.org/wiki/Projection_matrix
Projection matrix
In statistics, the projection matrix (
P {\displaystyle \mathbf {P} }), sometimes also called the influence matrix or hat matrix (
H {\displaystyle \mathbf {H} }), maps the vector of response values (dependent variable values) to the vector of fitted values (or predicted values). It describes the influence each response value has on each fitted value. The diagonal elements of the projection matrix are the leverages, which describe the influence each response value has on the fitted value for that same observation.
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