A Macropad Setup for Aider

For an Aider terminal, EM Mini Pad is a five-key aluminium control block with a knurled knob. It can shorten navigation and review actions while leaving typed instructions visible.

What does Aider actually ask you to type?

Aider is a terminal chat with documented slash commands for adding files, showing diffs, undoing its last commit, switching modes and opening an external editor. It also documents keyboard controls for history, interruption and line editing.

That does not mean every slash command belongs in firmware. A command that changes files or git history should stay readable at the prompt. Use the pad for short terminal inputs and navigation around those commands.

Which five bindings cover most sessions?

Escape or cancel, interrupt, previous history, next history and opening an external editor form a useful first set. If you use diff review constantly, replace a history key with a short, visible command trigger configured in the terminal rather than a hidden sequence.

Keep `/undo` deliberate. Aider describes it as undoing its last git commit, which is more consequential than moving through chat history. Type it or invoke a clearly labelled, reviewable shortcut.

How do you set the keys up per operating system?

First observe what the pad sends. On macOS use a device-specific keyboard remapper, on Windows use supported device configuration or editor shortcuts, and on Linux target the pad with keyd. Produce spare keys, then map those in the terminal where possible.

Aider's prompt uses terminal keybindings, so your terminal may consume a combination before Aider sees it. Test with an empty prompt and a disposable repository. Never debug an undo key against work you care about.

When is plain typing still faster?

Typing is better for filenames, questions, model choices and commands you use rarely. It shows the complete text before submission and does not depend on focus. Hardware earns a place only for short actions repeated across most sessions.

The EM Mini Pad limits the layout to five keys, which is useful discipline. Write the map down, review it after several sessions and remove anything you still need to look up before pressing. Keep a normal keyboard route for every mapped action. If the pad disconnects, changes layer or sends a duplicate code, the session should remain understandable and recoverable without special hardware. Review the layout against Aider's current command list after updates. A slash command that changed meaning should be removed from the hardware path until you have tested it in a disposable repository. Keep the first tests away from valuable branches.