Modifications

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   |text=This version of the LED backpack is designed for these big bright 7-segment displays. These 7-segment displays normally require 13 pins (5 'characters' and 8 total segments each) This backpack solves the annoyance of using 13 pins or a bunch of chips by having an I2C constant-current matrix controller sit neatly on the back of the PCB. The controller chip takes care of everything, drawing all the LEDs in the background. All you have to do is write data to it using the 2-pin I2C interface. There are two address select pins so you can select one of 8 addresses to control up to 8 of these on a single 2-pin I2C bus (as well as whatever other I2C chips or sensors you like). The driver chip can 'dim' the entire display from 1/16 brightness up to full brightness in 1/16th steps. It cannot dim individual LEDs, only the entire display at once.

   |text=Cette version du backpack LED est conçue pour pour pilote de grands afficheurs 7-segments (super-brillant). Ces afficheurs réclame normalement 13 broches/pins pour être pilotés correctement (5 'caractères' avec un total de 8 segments chacun). Ce backpack résout l'épineux problème d'utiliser 13 broches de votre microcontroleur et/ou une tonne de composants pour alimenter les segments de la matrice/afficheur en courant constant... le tout via une interface I2C. Le contrôleur placé à l'arrière du backpack prend tout cela en charge, et pilote toutes les LEDs en tâche de fond. Tout ce que vous avez à faire est d'écrire les données en utilisant une interface I2C à 2 broches/pins. There are two address select pins so you can select one of 8 addresses to control up to 8 of these on a single 2-pin I2C bus (as well as whatever other I2C chips or sensors you like). The driver chip can 'dim' the entire display from 1/16 brightness up to full brightness in 1/16th steps. It cannot dim individual LEDs, only the entire display at once.

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