SanderBoelen

Hey, sorry for the late response. If I understand correctly you are able to scan with the scanner on the original scale right?Can you describe the problems you encounter when scanning larger objects? Does it seem to be off in the calibration, or does it not work at all? For debugging I would try to use fewer pictures per scan, so you don't have as many frames interfering with each other. You should also always use the pointclouds for debugging, not the STLs since those can give a weird output if the pointcloud isn't correct.

Based on your photos I think your scanner turns the opposite direction of mine. If you look top down, it should be rotating clockwise (as seen in the video as well) if this is not the case it merges the pointclouds wrong. To fix this you can go to line 21 in the arduino code and replace "myStepper.step(steps);" with "myStepper.step(-steps);" so it does minus the amount of steps and turns the other direction. Think that should solve it. If not take a closer look if the table actualy turns a full 360degrees in total. Maybe your stepper skips steps or has another internal ratio or something. If that doesn't work, I will help you out on teams/discord if you want. Just let me know your timezone/place you live and the times you are available. I am pretty freely available so …

Based on your photos I think your scanner turns the opposite direction of mine. If you look top down, it should be rotating clockwise (as seen in the video as well) if this is not the case it merges the pointclouds wrong. To fix this you can go to line 21 in the arduino code and replace "myStepper.step(steps);" with "myStepper.step(-steps);" so it does minus the amount of steps and turns the other direction. Think that should solve it. If not take a closer look if the table actualy turns a full 360degrees in total. Maybe your stepper skips steps or has another internal ratio or something. If that doesn't work, I will help you out on teams/discord if you want. Just let me know your timezone/place you live and the times you are available. I am pretty freely available so we will make that work for sure!

If you just make a backup before changing the code you should be fine. I personaly use the spider editer for python which works super user friendly. This gives line numbers on the left side. You should go to the following lines to change the things you asked for:93 - replace 0.258 for your y distance (0.45)94 - replace every 0.13 with 0.18 (x/2 but I would advise a bit more so you can scan objects sticking out) also replace the 0.2 in the end with the scanning height, (although I think your scanner cant scan a lot higher than the 0.2 with spacer you used)165 - replace 0.165 with your camera height (0.25) (since your spacer is 6 cm I think your height needs to be 0.225)167 - replace 112.5 with your camera angle relative to vertical (102.5)183 same as line 94, so replace every 0.13 with 0.1…

If you just make a backup before changing the code you should be fine. I personaly use the spider editer for python which works super user friendly. This gives line numbers on the left side. You should go to the following lines to change the things you asked for:93 - replace 0.258 for your y distance (0.45)94 - replace every 0.13 with 0.18 (x/2 but I would advise a bit more so you can scan objects sticking out) also replace the 0.2 in the end with the scanning height, (although I think your scanner cant scan a lot higher than the 0.2 with spacer you used)165 - replace 0.165 with your camera height (0.25) (since your spacer is 6 cm I think your height needs to be 0.225)167 - replace 112.5 with your camera angle relative to vertical (102.5)183 same as line 94, so replace every 0.13 with 0.18, but keep the 0.01 in the endThe camera being offcentered is what we found out too! It should be adjusted for in the code, if you have problems with this you can change the offset value on the end of line 163 and line 164 (the value of 0.035 is the value I found to work best for me)

I replied to the email you sent me where I answered all your questions. Nice to see a picture of you replicating our project in your way!

I don’tthink a bigger turntable itself would be needed. I would recommend a longer extrusionprofile and changing the camera stand so it’s a bit higher as well. You should takein consideration that the grain in the images go up exponentially with thedistance, so I wouldn’t go unnecessary big, however the D435 shouldn’t be aproblem when going a bit bigger since the accuracy is pretty good. You wouldalso need to change some things in the software, I don’t know how experiencedyou are with this part but if needed I can help you if you reach out to me.Also if you really want the rotating table to be bigger I can change theoriginal part for you so you keep the right gear module and such. Would like tosee our scanner used for your application, keep us up!