Tomas0413 1 research notes and 2 wiki edits | Joined about 1 year ago





Dark images, can't get spectrometer to work

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Tomas0413 asked about 10 months ago

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"Quick update: The grating orientation might be the thing. I tried 4 * 2 = 8 combinations for the grating, and it didn't make any difference - in ..." | Read more » 9 months ago
"The grating orientation might be the thing. I somehow didn't think about it before. I do have a laser pointer, and when I tried a few weeks ago, I ..." | Read more » 10 months ago
"Thanks for prompt replies. I'm travelling now without access to the spectrometer, I'll share new photos on Mon/Tue next week. " | Read more » 10 months ago
"Warren, for now, I just completely removed the grating. And actually, I no longer use a slice of DVD, I bought a set of gratings (an upgrade). When..." | Read more » 10 months ago
" " | Read more » 10 months ago
"Pushpaw, thanks for the reply. Not sure why you mention auto-focus, you don't want it, and I'm pretty sure the camera that ships with the spectro..." | Read more » 10 months ago
"And this example says FixedFocus: Look what I found on AliExpress http://s.aliexpress.com/yiIBvmiy " | Read more » 10 months ago
"For example threre’s a similar camera on AliExpress and the description says that it’s AutoFocus and that this can’t be changed : Look what I found..." | Read more » 10 months ago
"Thanks for the response, I’ll upload tve image tomorrow. But aa far as I remember even if I leave only the camera inside the box the moment lid clo..." | Read more » 10 months ago
"Thanks! Warren maybe you can post the settings that you use so that I can try them tomorrow? " | Read more » 10 months ago
"uvcdynctrl -d video0 -c Listing available controls for device video0: Brightness Contrast Saturation Hue White Balance Temperature, Auto ..." | Read more » 10 months ago
"uvcdynctrl -d video0 -c Listing available controls for device video0: Brightness Contrast Saturation Hue White Balance Temperature, Auto ..." | Read more » 10 months ago
"I'm now able to control UVC Camera settings, however, the images are still dark when I close the list. I was hoping to be able to set Auto Focus to..." | Read more » 10 months ago
"Update: got the camera to work on Ubuntu!. The issue was fixed by installing VirtualBox extension pack and choosing USB 3.0 (instead of USB 1.0 ) " | Read more » 10 months ago
"On Ubuntu 18 via VirtualBox camera is visible to the OS and on spectralworkbench.org you get a request for permission to use the camera. However th..." | Read more » 10 months ago
"Quick update:grinning: 1. I got the USB cable for the Raspberry Pi Zero delivered, however it doesn't fit into the original Public Lab enclosure. 2..." | Read more » 10 months ago
"I can't edit the previous comment, I get an error when I try. This is what I wanted to post: echo none | sudo tee /sys/class/leds/led0/trigger non..." | Read more » 10 months ago
"I can confirm that this tuned activity LED on Pi Zero off: echo none | sudo tee /sys/class/leds/led0/trigger none echo 1 | sudo tee /sys/class/l..." | Read more » 10 months ago
"OK! Maybe it's possible to just disable LED via software: https://www.jeffgeerling.com/blogs/jeff-geerling/controlling-pwr-act-leds-raspberry-pi " | Read more » 10 months ago
"Hmm! Interesting point. I didn't think about the flashing LEDs! But thinking about this, it should be possible to put some black tape on the LED. I..." | Read more » 10 months ago
"Quick update: Followed this: https://www.youtube.com/watch?v=2iVK8dn-6x4 And this: https://www.raspberrypi.org/forums/viewtopic.php?t=173181 And..." | Read more » 10 months ago
"Also tried to build this app:grinning: https://github.com/valgit/uvc_scanner/tree/master/UVCCap The app starts but doesn't detect any UVC devices ..." | Read more » 10 months ago
"CamHolderApp didn't detect the camera. So these are my next steps: 1. Connect the camera to Raspberry Pi Zero and access via VNC Connect: https://w..." | Read more » 10 months ago
"Tried building CamHolderApp from source, but had to download QTKit later, found that QuickTime has been removed from Xcode, etc. Finally found a b..." | Read more » 10 months ago

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