Getting Started

1. Use Chrome or Edge — Web Serial API is required.
2. Linux only: add your user to the dialout group, or the Devkit will not appear in the port picker (see below).
3. Connect your SiMa.ai Devkit via USB.

Linux Prerequisite: dialout Group

On Linux, serial devices such as /dev/ttyUSB0 are owned by root:dialout with mode crw-rw----. If your account is not in the dialout group, the Devkit will not show up in the browser's port picker — even though lsusb and dmesg confirm the USB-to-Serial adapter was detected. Fix it once:

sudo usermod -aG dialout $USER

Then log out and back in (or reboot) — the group change does not apply to your existing session. Verify with groups | grep dialout. Not required on macOS or Windows.

Connecting

1. Click + New Connection or the + in the tab strip.
2. Select the serial port from the browser popup.
3. Auto-login runs if a login: prompt is detected.
4. Repeat for additional devices — each gets its own tab.

Features

• Quick Send: Type a command + press Enter or Send. Choose line ending (CR+LF, LF, CR, None).
• Timestamps: Prefix each received line with the current time.
• Auto-scroll: Toggle to pin or unlock scroll position.
• Reset DTR: Pulses the DTR line low then high — triggers a reset on most embedded boards.
• Font Size: Configurable in Settings (takes effect on new connections).
• Fullscreen: Header button — terminal fills the entire screen.

Disconnecting

Click × on a tab — sends logout then closes the port.