question:raspberry-pi
question:raspberry-pi


Author Comment Last activity Moderation
cedarlodge "Sure, so far I'm just doing test with CFL and halogen bulbs. The spectra I've uploaded do register as a bit dim, so I'm having to tinker with the c..." | Read more » almost 5 years ago
warren "Also, would you mind uploading or sharing some spectra you've taken? I'm eager to see some replications of the fairly new Lego design for verificat..." | Read more » almost 5 years ago
warren "This is a great question and we need better (or just more refined) solutions. But there are a few options to start with: https://github.com/publi..." | Read more » almost 5 years ago
cedarlodge "It would use the USB port. The zero is wired to draw power through it as well as data. I've just enabled it on the Pi zero i'm using at work. You ..." | Read more » almost 5 years ago
warren "OMG I know what you mean, @wmacfarl and I have been talking about how one tiny thing can ruin your whole day when working with Raspberry Pis. And I..." | Read more » almost 5 years ago
warren "Awesome!!! We're going to start distributing these with buttons and low-profile batteries soon at http://store.publiclab.org so including a button ..." | Read more » almost 5 years ago
cedarlodge "Have got it to work before in a pi zero (no WiFi). Key thing is to make sure the micro usb you use is also a data cable. That’s one very frustratin..." | Read more » almost 5 years ago
cedarlodge "Here’s a basic guide to adding a tactile button to the GPIO pins: https://www.modmypi.com/blog/tutorial-tactile-switch For a neater package, i’d ..." | Read more » almost 5 years ago
stef "Further to my previous replies, it may be possible to view the sun disk attenuated with the filters used by welders to view their work. I have not ..." | Read more » almost 5 years ago
Metamer "I, too am trying to get spectral data of sun/sunsets. Would be interested to hear what you've learned " | Read more » almost 5 years ago
warren "Actually they are the same filters as come with the NOIR camera! Raspberry Pi worked with us to develop the filter options from our original filter..." | Read more » about 5 years ago
stef "What I was alluding to is that with all of the filter attenuation, the cmos sensor was still overloaded. This can be seen in the spectra submitted..." | Read more » about 5 years ago
Ag8n "There are two approaches to this, the hardware and software. Sounds like you took care of the hardware end very well. Can you think of any softwa..." | Read more » about 5 years ago
stef "I have used photographic neutral density filters and have not been able to view the sun directly using the spec3 highly modified device. The attenu..." | Read more » about 5 years ago
Ag8n "Only one suggestion then. Sunlight can be strong. As a safety measure, partially block the sun and work your way up to full exposure. Might not ..." | Read more » about 5 years ago
jsbonillam "I am going to make and analyse the graphs with the wavelength and absorption. " | Read more » about 5 years ago
Ag8n "Please forgive the question, but what lines are you using and what method of analysis? Thank you for the information. " | Read more » about 5 years ago
warren "Oh, i don't know, but it looks very cool! " | Read more » about 5 years ago
jsbonillam "@warren The camera will be just part of the spectrometer. I am still considering whether to use LDRs (light depending resistors), as here http://ww..." | Read more » about 5 years ago
warren "How would you set up the spectrometer next to the other equipment, or the tracker? Are you using a raspberry pi camera as-is, as well, or just as p..." | Read more » about 5 years ago
warren "I think the Lego spectrometer's suitability for this is an open question, but the Raspberry Pi Camera v2 is very low noise and could be worth testi..." | Read more » about 5 years ago
warren "Looks like you can just load it as an image using this code, and insert it: var piImage = new Image(); piImage.onload = function() { ..." | Read more » about 5 years ago
warren "I did find some links here, but haven't tried it! https://learn.adafruit.com/turning-your-raspberry-pi-zero-into-a-usb-gadget/ethernet-gadget htt..." | Read more » about 5 years ago
warren "There's some really good starting code here: https://www.sitepoint.com/streaming-a-raspberry-pi-camera-into-vr-with-javascript/ Please help out if..." | Read more » about 5 years ago