Problems with first...
 

Problems with first Callibration  

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FabscannerSmith
(@fabscannersmith)
Active Member

Hey guys, I bougt a Fabscan Pi at the beginning of 2018, but i didn´t get it to work. Today i updatet to the newest version, v.0.7.0. That worked, I saw the UI, but when I want to calibrate the Fabscan the software says that there is no UI and started to show the site for

The FabScanPi server is currently not running

So i didnt know what to do. Do you have any suggestions?

Regards

 

 

Quote
Posted : 15/03/2019 7:52 pm
mario
(@mario)
Member Admin

, I saw the UI, but when I want to calibrate the Fabscan the software says that there is no UI 

Can you explain this more detailed? I do not understand what you exactly mean with that. It would also be helpful if you could provide the log file of your fabscan. 

cheers

Mario

This post was modified 4 months ago by mario
ReplyQuote
Posted : 15/03/2019 10:52 pm
FabscannerSmith
(@fabscannersmith)
Active Member

Yeah, the Problem was that after calibration the whole Pi did not react anymore and if I wanted to reload the Online User Interface it sayd that the User Interface isn´t working and after that it shows me the information that the Pi is not running.I searched for the logs but the Pi didn´t make any so I decided to renew the whole update. After that, the calibration worked, but im still not convinced about the scanning quality so I`m still working on a good callibration.

 

ReplyQuote
Posted : 16/03/2019 6:18 pm
FabscannerSmith
(@fabscannersmith)
Active Member

Hello,

I get no good results after a few recallibration. The Fabscan shows that the callibration worked and i`ve followed the instructions of AndreaCH,in the other discussion about callibration, but my scanning results were not so good. Here is a picture of one of my results  .html

And here is my default.config
{
"folders": {
"www": "/usr/share/fabscanpi/",
"scans": "/home/pi/scans/"
},
"laser": {
"numbers": 1
},
"scanner_type": "laserscanner",
"calibration": {
"weight_matrix": [],
"dist_camera_matrix": [],
"pattern": {
"square_size": 11,
"rows": 6,
"columns": 8,
"origin_distance": 37.2
},
"camera_matrix": [
[
1340.428,
0.0,
741.498
],
[
0.0,
1372.858,
719.118
],
[
0.0,
0.0,
1.0
]
],
"distortion_vector": [
-0.032,
1.888,
-0.027,
0.033,
-5.666
],
"laser_planes": [
{
"deviation": 0.04453171157637373,
"distance": 121.02739087025974,
"normal": [
0.5895903501061305,
0.07643443193792729,
0.804077730493798
]
}
],

"platform_translation": [
-29.54204857175666,
72.97609026689221,
167.7199978015176
],
"platform_rotation": [
[
0.0,
0.9998997489191808,
-0.014159523698178663
],
[
-0.10687070850543721,
-0.01407843106019764,
-0.9941732492088233
],
[
-0.9942729261442986,
0.0015132383297238822,
0.10685999460140162
]
]
},
"keep_raw_images": "True",
"meshlab": {
"path": "/usr/bin/"
},
"process_numbers": 4,
"turntable": {
"steps": 6400,
"radius": 70
},
"camera": {
"rotate": "True",
"type": "PICAM",
"vflip": "False",
"preview_resolution": {
"width": 800,
"height": 600
},
"hflip": "True",
"resolution": {
"width": 1640,
"height": 1232
}
},
"discoverable": "True",
"serial": {
"plattform_type": "fabscanpi",
"baudrate": 57600,
"autoflash": "True",
"port": "/dev/ttyAMA0"
},
"texture_illumination": 40
}
Maybe you have an idea what i can do to get better results.


ReplyQuote
Posted : 18/03/2019 3:04 pm
FabscannerSmith
(@fabscannersmith)
Active Member

There wen something wrong with the picture so here is it again: https://ibb.co/WnPZwkN

ReplyQuote
Posted : 18/03/2019 3:13 pm
FabscannerSmith
(@fabscannersmith)
Active Member

Hey guys,

Its been a while, but i did not get to manage this thing. I couldn`t get a callibration for the scanner. The scanner hangs up after the first rotation to the side and it shows the window ''the FabScanPi server is not available''. The problem therfore is that after that and restarting the scanner there isnt a file in the log. I`m using a the 0.7.0 version, a watterrot set with stepper motor 17HM3410 nr 20170821 and a rasperry pi 3 model b. Everytime i want to calibrate this thing it shuts down.

ReplyQuote
Posted : 10/04/2019 1:58 pm
Danilo0702
(@danilo0702)
Eminent Member

i think the problem is not the Software. you have cold solder joint. check this

ReplyQuote
Posted : 12/04/2019 11:03 am
mario
(@mario)
Member Admin

By the way, which power supply do you use? The behavior sounds like a under voltage problem, so that the pi does a reboot. As Danilo0702 mentioned also check the solder joints, especially those of the 12v to 5v converter. 

ReplyQuote
Posted : 12/04/2019 8:51 pm
FabscannerSmith
(@fabscannersmith)
Active Member

So thanks a lot for the help. Now it works, but it wasn´t one problem alone. So first of all i checked all solder joints. They were good, so i decided to test other things. The next thing ich checked was the reference voltage of the driver and set it to 0.8 V after that the motor itself works, but the server crashes didnt stop. I read in one of the old forums about the that the Raspberry 3 model b has difficulties with power so i decided to use a labour power adapter and with that i saw that there was a drop in the ampere rate after a time and following a freeze of the system. So i decided to change the raspberry to a model 2 and after that everything, the callibration and some scanns worked.

So thank you all for the help 🙂

ReplyQuote
Posted : 06/05/2019 10:28 am
mario
(@mario)
Member Admin

Hi, 

thank you for your detailed report. You are right, the Raspberry Pi2 doesn't make problems. But also the Raspberry Pi3 works. Only the Raspberry Pi3 B+ ( the newer one) has a higher power consumption. But this can also be solved by using two power supplies. One of 5V for the Pi and one 12V for the HAT. But be careful if you are using two power supplies, you need to remove the Step Down Converter!

Have fun. 

Mario 

ReplyQuote
Posted : 07/05/2019 7:54 pm
Pat12-6
(@pat12-6)
Active Member

how would i remove the stepdown converter? just unsolderit or do i have to remove something else?

 

ReplyQuote
Posted : 13/05/2019 7:32 am
mario
(@mario)
Member Admin

@pat12-6

Yes, you can unsolder it. 

ReplyQuote
Posted : 14/07/2019 4:17 pm
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