Some of America’s most beloved Christmas traditions aren’t just found in decorated homes or festive gatherings — they also live on our screens. Enjoying holiday movies together has become a cherished ...

Additional circuitry required. One Diode (I use 1n4004) - pole/cathode at tx pin other at rx pin. 4k7 Ohm resistor between rx and 5V (3.3V also works). Same at the other microcontroller but you don't ...