Connecting Laetoly PC Driver
How to set up the local PC background driver and establish hardware serial or Wi-Fi communication with your GRBL CNC router.
Table of Contents▼
Overview
Laetoly Web runs in your browser and requires the Laetoly PC Driver running locally on your computer. The Driver performs the CAM toolpath calculations and communicates directly with your GRBL-based desktop CNC controller through an interface supported by your Driver and machine. USB serial is the documented GRBL path; some setups may provide a network connection, so do not assume every machine offers both. This tutorial shows the USB connection from start to finish, including a small jog test.
Step 1: Install the Laetoly Driver
Connect the USB cable to your computer and to the machine. Open the Laetoly Driver you downloaded from the website. If the setup wizard appears, click Next to install it. Once installed, the driver runs automatically.
Step 2: Open the Comms panel
Sign in to Laetoly Web and open the Comms panel on the right. Device State shows Disconnected, while Driver State should show Installed.
Step 3: Select the port
Click Refresh to scan for ports, then select your machine's port. On Windows it may look like COM4. If you are not sure which one it is, unplug the USB cable, click Refresh and note which port disappears.
Step 4: Connect
Reconnect the cable, then click Connect and watch Device State. When it shows IDLE, the connection is ready. A loaded webpage alone does not prove that hardware is connected or ready to run.
Step 5: Test with a small jog
Make sure the workspace is clear. Use the arrow buttons on the Jog panel. If the machine moves as expected, the connection is working.
Default Connection Parameters
| Parameter | Default Value | Description |
|---|---|---|
| Baud Rate | 115200 | Standard GRBL v1.1 communication rate |
| Data Bits | 8-N-1 | 8 data bits, no parity, 1 stop bit |
| Connection Interface | USB serial; network option depends on the supported build and controller | Confirm the interface and controller compatibility before use |
| Buffer Flow | Character-Counting | Prevents serial buffer overrun during cut |
Next steps
- Driver Configuration and Connection troubleshooting in the Wiki cover installation requirements and common problems.
- Create Your First CNC Project walks through a complete design.