As Level As You Can Go

A project log for DoMSnif - Dot Matrix LCD Sniffer Bluetooth Adapter

Output dot matrix LCD data from different devices to your phone or laptop via Bluetooth.

BleckyBlecky 08/25/2019 at 05:220 Comments

So just poking around the various microcontroller options out there, it seems there's a few "newish" 5V capable ARM chipsets in the wild.

This would mean we can do away with the level conversion and interface directly with the LCD. One of these options is the ATSAMC21J18A a 5-Volt 32-Bit ARM Cortex M0+.

This SAMC variant further simplifies the DoMSnif which would just require some buffering for the UART TX pin: