Troubleshooting: DevoVision shows incorrect values

It might be possible that DevoVision presents incorrect values during the extrusion process. This article explains the possible causes and how to fix them.

Incorrect values

In some cases, DevoVision data shows unexpected results, with data spikes or data that cannot surely be correct during the current extrusion procedure. The options below are possible solutions to incorrect values. If you are seeing "empty" data in DevoVision with no value, please continue reading below.

Dirty filament thickness sensors glass

When the glasses of the sensor are dirty, it could cause the filament sensor to read the wrong values. The reason for this is that a contamination on the glasses can block light, resulting in a signal of filament present, thereby interfering with the actual measurement. It is essential to keep the sensor glasses clean and check them regularly. The following article explains how the glasses can be removed so they can be cleaned.

Filament maker firmware

In a previous version of the Filament Maker's firmware there was a bug that could send out data to DevoVision with the wrong values. Therefore, it is important to check if the firmware of the Filament Maker is up to date. When the Filament Maker runs on an older version of the firmware you can update it. This process is explained in the following article.

Empty data "0" measurement

The Filament Maker uses a sensor to measure the filament thickness. However, a few factors could interfere with the measurements, causing it to result in a "0". The result of the "0" measurement is that the filament maker does not know how thick the filament is, and therefore it does not make any changes.

Waving filament

Sometimes the filament moves a lot between the nozzle and the sensor as described in the following article.

When the moving filament moves out of range of the sensor, it is not measured, resulting in a "0". By preventing the filament from waving, you'll also prevent the "0" measurement. However, sometimes a wavy filament is not very noticeable by eyesight alone. When this is the case, you can keep the filament from moving by pushing the filament into a corner using a screwdriver, or you can use this 3D printed part, 'filament clamp.'

Light interference

Because the Filament Maker uses a sensor, it could cause issues (such as wrong readings) when the sun or a bright lamp shines directly onto the sensor. If the Filament Maker is placed directly under a light source, you could use the following 3D print 'filament clamp' to ensure that the sensor has some protection from the direct light source.