Instead, [Nakul] is using the ubiquitous Hitachi HD44780 character LCD display. Normally these are used to display text, but they all have the ability to display custom 5 by 8 pixel characters.

He’s using Microchip’s USB stack to enumerate the module as an HID device. It listens for commands 0x10 through 0x23. These clear the display, write strings to each of the four lines of the ...

Employing a high-resolution A/D converter and integral multi-line character display driver interface, the ALD MB203A module functions as a precision, ±5-1/2-digit DVM and features a direct ...