Foot Pedal Ups Vim Productivity, Brings Ergonomic Benefits

Vim is the greatest or the worst text editor of all time, depending on the tribe you’re in. Either way, members of both camps can appreciate this build from [Chris Price], which uses a foot pedal to ease operations for the user.

The basic concept was to use a pedal to enable switching between normal and insert modes. In Vim’s predecessor, vi, switching modes was easy, with the ESC key located neatly by the Q on the keyboard of the ADM-3A terminal. On modern keyboards, though, it’s a pain, and so a foot pedal is a desirable solution. In the Vim world, it’s referred to as a “Vim clutch.”

The build used a cheap pedal switch sourced from eBay, into which a Raspberry Pi Pico was installed. The Pico was hooked up to the switch contacts, and programmed to act as a USB HID device. When the pedal is pressed down, the Pico sends an “i” keypress to enter Vim’s insert mode. Releasing the pedal has the Pico send a “ESC” keypress to return to normal mode.

Those that use Vim on a regular basis would likely appreciate the productivity improvements of such a device. Plus, there’s some ergonomic benefits to not having to strain one’s hand over to reach the ESC key. Of course, it’s an old-school solution, but there’s still something so compelling and next-level about having a foot pedal hooked up to one’s dev rig.