Users Manual

9 Maintenance
Warning: The customer does not need to open the rc_visard’s housing to perform maintenance. Unauthorized
opening will void the warranty.
9.1 Lens cleaning
Glass lenses with antireflective coating are used to reduce glare. Please take special care when cleaning the lenses.
To clean them, use a soft lens-cleaning brush to remove dust or dirt particles. Then use a clean microfiber cloth
that is designed to clean lenses, and gently wipe the lens using a circular motion to avoid scratches that may
compromise the sensor’s performance. For stubborn dirt, high purity isopropanol or a lens cleaning solution
formulated for coated lenses (such as the Uvex Clear family of products) may be used.
9.2 Camera calibration
The cameras are calibrated during production. Under normal operation conditions, the calibration will be valid for
the life time of the sensor. High impact, such as occurring when dropping the rc_visard, can change the camera’s
parameters slightly. In this case, calibration can be verified and recalibration undertaken via the Web GUI (see
Camera calibration, Section 6.6).
9.3 Updating the firmware
Information about the current firmware image version can be found on the Web GUI’s (Section 4.5) System tab in
the System information row. It can also be accessed via the rc_visard’s REST-API interface (Section 8.2) using the
GET /system request. Users can use either the Web GUI or the REST-API to update the firmware.
Warning: After a firmware update, all of the software components’ configured parameters will be reset to
their defaults. Please make sure these settings are persisted on the application-side or client PC (e.g., using the
REST-API interface, Section 8.2) to request all parameters and store them prior to executing the update.
The following settings are excluded from this and will be persisted across a firmware update:
• the rc_visard’s network configuration including an optional static IP address and the user-specifed device
name,
• the latest result of the Hand-eye calibration (Section 6.7), i.e., recalibrating the rc_visard w.r.t. a robot
is not required, unless mounting has changed, and
• the latest result of the Camera calibration (Section 6.6), i.e., recalibration of the rc_visard’s stereo cam-
eras is not required.
Step 1: Download the newest firmware version. Firmware updates will be supplied from of a Mender artifact
file identified by its .mender suffix.
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