Expand Output Pins and Power; ICs

bf-scottbf-scott wrote on 16 Mar 2013 03:59


A good little article that talks about expanding the number of pins on an Arduino and adding more power to those pins in the process… using single-function and multiple-function ICs.

The M5451 40-pin IC drives 35 constant-current switches that can be controlled by 2 Arduino digital pins (clock and serial data). And if you want to change the current (of all pins) you can use a third pin to connect a "brightness" pin on the 5451 to a PWM on the Arduino.

Could this 5451 IC be a simpler option for driving 3D LED cubes?! Hmmm…

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