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Hello, i have a teensy 4 and i need to drive a series of led via 74hc4067, how to amplify the digital pin of teensy (only 5mA) used for drive a led status? My idea is a simple transistor. Another two questions : i need to connect a pro mini (3.3V) via serial port, can i connect direct to...

Hi to all, i'm new member, from italy but live en mexico. Make a midi controller using Arduino mega flashed with moco lufa y Nextion display connected via serial. But i have buy, 1 year ago, one Teensy 4 and one LC for another project and i want to replace the Arduino mega with the Teensy 4 (or...