Macro Keypad / Stream Controller Product

Overview

A macro keypad is a specialized input device that extends the keyboard's functionality by providing programmable buttons and controls dedicated to specific software tasks. This model combines three input paradigms: a small LCD Key Array with capacitive touch keys that can display live context-aware information, a bank of mechanical Cherry-Style Switches for tactile actuation, and rotary Encoders for continuous parameter adjustment.

The device connects to the host computer via a detachable USB Cable. The Control Board board receives input from all three input sections and translates them into USB HID keyboard/mouse events or custom protocol messages. Software on the host allows users to define profiles per application — Photoshop, Premiere, OBS, or game engines — so the same physical hardware morphs into context-specific control surfaces.

The Enclosure Housing is split aluminum-and-plastic construction, angled on a Stand Assembly for comfortable reach. The Rubber Foot provide grip without marring the desk.

How it works

The three input sections feed separate scanning loops on the Microcontroller. The LCD Key Array uses a capacitive touch interface: the Touch Digitizer polls the LCD Panel continuously to detect finger presence on each key region. The Mechanical Switch Bank uses traditional matrix scanning: the Switch Matrix PCB energizes rows and reads column lines to detect which Cherry-Style Switches are closed. The Encoders are polled for quadrature transitions every millisecond.

Each frame, the Microcontroller bundles all input changes and sends them to the host as USB HID packets (or raw reports if the software provides a custom driver). The host software interprets the input and translates it into application commands — trigger a macro, adjust a slider, switch Photoshop tools, or mute audio.

The LCD Key Array also serves as an output display: the host can render mini icons or value indicators on each key to remind the user of current mode or available functions. This makes the device self-documenting and instantly adaptable when switching between applications.