Welcome to Filameter!

Filameter is a python program that runs on the raspberry pi to measure the diameter of filement. This can be used to measure filament that goes into a 3d printer, or filament that comes out of a filament extruder. This is just one of the ways to measure filament and i created this project to see if it was possible to do with a camera. The program is made to work with a small touchscreen but can also be used with a mouse.

Software

Filament view

Graph

Note: Graph only works when there is more than one measurement per capture or when recording.

Filament info

The filament info shows information of a single capture.

Note: Tolerance only works when there is more than one measurement per capture.

Record

Recording will keep track of the diameter of the filament until the recording is stopped by the user. A capture will be made every x amount of seconds and will be shown on the graph and also saved. When a recording is stopped a json file will be made with the recording info. In this json file you will find the following information:

• Average diameter over the entire recording
• max measured diameter
• min measured diameter
• average of multiple measurements

Single actions

With single actions you can calibrate your settings, focus your camera and other preperations.

Settings

• number of measurements
• threshold
• border offset
• pixels per mm
• image processing type (opencv or filameter's own way)
• camera capture width
• capera capture height

If you want to adjust one of the settings you can simply click on the setting and it will appear light blue. Then on the control pad you can adjust the value. Select the amount you want that setting to change and then with the + or - you can either subtract or add that value to the setting.

Hardware

For this program you need the following hardware:

• Raspberry pi
• hq camera sensor for the raspberry pi
• microscope lens
• small led strip
• (optional) touchscreen

As a housing feel free to use whatever you want!

I made a funny housing with my 3d printer as an example: