| 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 » | almost 7 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 » | almost 7 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 » | almost 7 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 » | almost 7 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 » | almost 7 years ago | |||
| jsbonillam | "I am going to make and analyse the graphs with the wavelength and absorption. " | Read more » | almost 7 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 » | almost 7 years ago | |||
| warren | "Oh, i don't know, but it looks very cool! " | Read more » | almost 7 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 » | almost 7 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 » | almost 7 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 » | almost 7 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 7 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 7 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 7 years ago |