- Recent Topics

Cyclop Pi Camera adapter

Sinkha — Sun, 14 Jul 2024 01:40:44 +0000

hi, after hours and hours of research I couldn't find the link to download the adapter to mount the pi camera instead of the logitech c270 on a cyclop converted to fabscan pi, would someone be kind enough to provide me with the link or the file directly , Thank you very much

Scanning Capabilities.

Kendrick — Wed, 24 May 2023 14:10:45 +0000

Is it possible to scan bowl shaped objects inside and out? for example a hard hat has internal features to latch ear muffs and the straps to the helmet. are those kinds of features captured? also is it dimensionally correct so that it could be scaled and imported properly in to freecad?

Which 400-step motor to choose

Sraasch — Fri, 13 Jan 2023 21:17:46 +0000

My fabscan-pi kit came with a 200 step motor (17HS8401). I'd like to upgrade to a 400-step motor, but don't know what to choose... There apparently is a 17HM8401 that looks promising, but I want to be sure that I don't go down the path of needing other new hardware or changes to the existing setup.

Can one of you generous souls give me a bit of advice?

Thanks.

Fabscan 100 - Arduino Code Issues

Tristan McPhail — Sat, 24 Dec 2022 01:48:25 +0000

Hello everyone, I have been working on making one of the older versions of the fabscan (the fabscan 100) because of the shortage of rasberry pi. I was able to get my hands on all the necessary pieces except it seemed that the fabscan shield is no longer compatible with arduino. Because of this, I have used a breadboard shield and wired in the stepper motor myself. The test code works perfectly, but the official code needed for the fabscan isnt working correctly. The motor does not step, the led doesn`t turn off, and I don`t recieve a ping on my computer notifying me of a finished setup. On top of this the fabscan software isn`t identifying the code and so I cant proceed until I can make the arduino code work properly. I am wondering if the issues lies in the fact that the code is outdated or perhaps some other issue I haven`t thought of. It would really mean a lot to me if anyone out there who might know something could help me with this. Any responses are greatly appreciated!

Scanned Points Come Out Wrong

marcuso — Fri, 23 Dec 2022 04:29:42 +0000

I have My FabScanner built, and mechanically its working. I used an Arduino Uno with a Pi 3, a single laser and a Pi V2 camera. I built my box from some old 70s style mid century teak veneer which looks great. Even though the FabScan is mostly working (after fixing a few bugs in the Arduino FW - which I will submit later), I can not get the scan data points to look correct. Can someone help me !

I calibrated my system, and the config file can be seen below (post calibration). I changed a few things in the default.config.json file, because my NEMA stepper motor has a resolution of 200, and is in 1/16th mode - so 3200 per complete single revolution, and the diameter of the turntable is 14 cm, so 70 mm radius :

turntable": {
"steps": 3200,
"radius": 70,
"height": 15,
"degree_per_step": {
"low": 3.6,
"medium": 1.8,
"high": 0.8
}

One thing with the above though is that the fabScan wiki help pages don't mention what degree of step - low, medium, high are for, or the height is for ?

I also changed the number of laser to 1 - single laser.

The non default camera settings are these - as my camera shows the image sideways (rotated 90 degrees) - so I changed vflip to True.

"rotate": "True",
"hflip": "False",
"vflip": "True",

The calibration values are the default values, apart from the origin-distance, which is 47mm from the turntable to the top of the bottom chessboard row, so I changed it to this

"pattern": {
"square_size": 11,
"rows": 6,
"columns": 8,
"origin_distance": 47,
"type": "chessboard"
},

These settings match my chessbaord calibration I printed off.

Following are pictures from my scans of a tea pot. Here is the original image from the first phase of calibration

644

I noticed when I set the config to keep the scan images, that I can see the red laser outline and it looks correct - apart from the images are rotated 90 degrees - so imagine each picture is on its side 90 degrees rotated to the right with the top of the image on the right hand side of each picture.

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Also the cloud points are the same, when I rotate the cloud points in the web browser they dont rotate around the centre of the turn table, they rotate around a side view.

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Is there a bug when you change the vflip ? Shall I rotate the camera physically to the correct orientation ? Then put the vflip back to false ?

This is the complete config file...

{
"folders": {
"www": "/usr/share/fabscanpi/",
"scans": "/home/pi/scans/"
},
"laser": {
"interleaved": "False",
"numbers": 1,
"color": "R (RGB)"
},
"scanner_type": "laserscanner",
"calibration": {
"weight_matrix": [],
"dist_camera_matrix": [],
"pattern": {
"square_size": 11,
"rows": 6,
"columns": 8,
"origin_distance": 47,
"type": "chessboard"
},
"camera_matrix": [
,
,

],
"distortion_vector": ,
"laser_planes": [
{
"distance": 137.20160911374415,
"normal": ,
"deviation": 0.02480792209446897
}
],
"platform_translation": ,
"platform_rotation": [
,
,

],
"type": "chessboard"
},
"meshlab": {
"path": "/usr/bin/"
},
"process_numbers": 3,
"turntable": {
"steps": 3200,
"radius": 70,
"height": 15,
"degree_per_step": {
"low": 3.6,
"medium": 1.8,
"high": 0.8
}
},
"camera": {
"resolution": {
"width": 1640,
"height": 1232
},
"preview_resolution": {
"width": 800,
"height": 600
},
"rotate": "True",
"hflip": "False",
"vflip": "True",
"type": "PICAM",
"undistort": "False"
},
"connector": {
"type": "serial",
"firmware": "fabscanpi",
"baudrate": 57600,
"autoflash": "False",
"flash_baudrate": 115200,
"port": "/dev/ttyUSB0"
},
"texture_illumination": 160,
"keep_raw_images": "False",
"keep_calibration_raw_images": "False",
"discoverable": "True",
"online_lookup_ip": "8.8.8.8"
}

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