Machine Controller FCC Information
Last assessed: November 11, 2026
This page is the FCC compliance information for Surfacecraft machine controllers (47 CFR 2.1077) and our Supplier's Declaration of Conformity. The same text is printed on the regulatory sheet in the box.
1. Products covered
| Model | Display and processor | Wi-Fi radio | USB to the machine | Controls |
|---|---|---|---|---|
| Surfacecraft Controller | Elecrow CrowPanel Advanced 7" (ESP32-P4) | Espressif ESP32-C6-MINI-1 on the Elecrow board, certified with the board. Contains FCC ID: 2BDNA-AP07 | Surfacecraft Host Board (Analog Devices MAX3421E USB host controller) | Two-pole paddle stop switch with a removable key (passive, no electronics) |
2. Responsible party
We assemble the controllers and are the responsible party for them in the United States:
WebCAM CNC LLC WebCAM CNC LLC, Somerset County, New Jersey, USA [email protected]
3. FCC compliance statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
4. Class B digital device notice
This equipment is designed to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
You can also email us at [email protected]. See section 8.
5. Changes or modifications
Changes or modifications not expressly approved by WebCAM CNC LLC, the party responsible for compliance, could void the user's authority to operate the equipment. That includes replacing the display, the USB host board or the stop switch, or fitting a different antenna.
6. How we assessed compliance
This is our declaration, based on our best engineering judgement, of how the controller meets part 15. Each controller is built from these parts:
- Display and processor. An Elecrow ESP32 display module, used as supplied apart from the one 5 V jumper described below. Elecrow declares it compliant with FCC part 15, subpart B, and we keep its Supplier's Declaration of Conformity and test report on file.
- Wi-Fi radio. An Espressif radio module on the Elecrow board, covered by an FCC grant (the FCC ID in the table above). We don't change the module, its antenna or its transmit power settings.
- USB host board. Our own small board that lets the controller talk to the machine. It carries an Analog Devices MAX3421E USB host controller, its 12 MHz crystal and a USB-A socket, and plugs into the display board's module sockets by a short SPI link. It is a two-layer board about 20 x 38 mm with a ground pour on both sides, it sits fully inside the housing, and its USB port runs at full speed (12 Mbit/s), not high speed. To power its USB socket we fit one zero-ohm jumper on the display board's 5 V rail, at a position Elecrow's design provides for it; nothing else on the board is changed.
- Stop switch. A two-pole paddle switch with a removable key and no electronic parts of its own. Its two contacts connect to the display board by short wires that stay inside the housing; the firmware reads them as plain on/off inputs.
- Power. 5 V DC through the display board's USB-C port, from a USB power adapter or a computer's USB port. The controller has no mains wiring of its own.
The assembled controller has not been measured at an EMC test laboratory. Our declaration rests on the authorizations of the bought-in parts above and our engineering assessment of what we add and change: the USB host board and its 5 V jumper, the stop switch and the housing. We keep that assessment, the parts' declarations and grants, and the board designs on file, and we'll provide them to the FCC on request. We review the assessment whenever the hardware changes. This page was last assessed on November 11, 2026.
7. Using the controller
- Power it from a USB power adapter marked as a Class 2 or Limited Power Source (LPS) supply, such as a phone charger from a reputable brand, or from a computer's USB port.
- Connect it to the machine with a shielded USB cable (most are) and keep the cable no longer than you need.
- Keep the housing closed, except where our documentation tells you to open it.
8. If you see interference
If you think your controller is causing interference, switch it off and email us at [email protected] with your order number. We'll help you find the cause, and if the controller is at fault we'll repair, replace or refund it under our Machine Controller Terms of Sale.