I bet by changing up the sensor pixels this would be a pretty cost effective way of making a low res FLIR camera, or really any imaging band. Using a different pin hole you might even be able to image things with xrays, neutrons, or strong 100Ghz through THz radio waves.
I made my own image sensor and digital camera [video]
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Re: I made my own image sensor and digital camera [video]
#12I bet by changing up the sensor pixels this would be a pretty cost effective way of making a low res FLIR camera, or really any imaging band. Using a different pin hole you might even be able to image things with xrays, neutrons, or strong 100Ghz through THz radio waves.
Fun and a great learning experience, sure. But, at least with respect to infrared, I'm not seeing the cost effective part when fully integrated solutions with ~19x greater resolution and then some can be had for $400 retail; the BOM for such a project will approach (if not exceed) this figure. Prototyping is often deceptively expensive.
Re: I made my own image sensor and digital camera [video]
#13I bet by changing up the sensor pixels this would be a pretty cost effective way of making a low res FLIR camera, or really any imaging band. Using a different pin hole you might even be able to image things with xrays, neutrons, or strong 100Ghz through THz radio waves.
Fun and a great learning experience, sure. But, at least with respect to infrared, I'm not seeing the cost effective part when fully integrated solutions with ~19x greater resolution and then some can be had for $400 retail; the BOM for such a project will approach (if not exceed) this figure. Prototyping is often deceptively expensive.
Certain FLIR resolutions beyond a certain density are, let's just say, not unlike the early days of cryptography.
Re: I made my own image sensor and digital camera [video]
#14How about making a (slow) medium/large format camera with a linear sensor from a scanner?
Re: I made my own image sensor and digital camera [video]
#15How about making a (slow) medium/large format camera with a linear sensor from a scanner?
People have done it. I've seen a couple articles about it, but the one I was able to dig up today is from Mattias Wandel (of woodgears.ca note):
https://www.sentex.ca/~mwandel/tech/scanner.html
This isn't exactly what you're looking for, but you run into some of the same limitations using a scanner as a large format back: moving objects end up distorted by the movement of the scanner "head" as it scans the image plane.
Re: I made my own image sensor and digital camera [video]
#16Using decapped DRAM chip as photo sensor looks more promising: https://hackaday.com/2014/04/05/taking-pictures-with-a-dram-...
I wonder how good images could be with modern DRAM. A 256MB DDR3 chip would theoretically have over 2 trillion pixels. Light sensitivity should be better too due to the smaller capacitors.
Who is down voting this comment?
Re: I made my own image sensor and digital camera [video]
#17Using decapped DRAM chip as photo sensor looks more promising: https://hackaday.com/2014/04/05/taking-pictures-with-a-dram-...
That's how CMOS cameras got started in the first place.
Re: I made my own image sensor and digital camera [video]
#18Earlier quoted context omitted.
I wonder how good images could be with modern DRAM. A 256MB DDR3 chip would theoretically have over 2 trillion pixels. Light sensitivity should be better too due to the smaller capacitors.
Decapping and testing this wont be difficult, meaning you understand how individual transistors are located on the die to reorder raw data into planar image. I wonder if this information can be recovered using some known patterns shown to such sensor then retrieving appropriate data and analyzing. Another interesting thing is that for training neural networks for image recognition purpose information about location o…
Just move it about for a bit with frames sampled in sequence and you should be able to build up a pretty good map of the arrays of cells.
Re: I made my own image sensor and digital camera [video]
#19How about making a (slow) medium/large format camera with a linear sensor from a scanner?
People have done it. I've seen a couple articles about it, but the one I was able to dig up today is from Mattias Wandel (of woodgears.ca note): https://www.sentex.ca/~mwandel/tech/scanner.html This isn't exactly what you're looking for, but you run into some of the same limitations using a scanner as a large format back: moving objects end up distorted by the movement of the scanner "head" as it scans the image plan…
Funny to see wandel here. I binged his channel but never knew he made articles. Anyway distortion is also pretty interesting artistically.
I scavenged a dozen of heads to make a giant wall scanning bar.
Re: I made my own image sensor and digital camera [video]
#20Visually, I'm reminded of this project. https://www.thisiscolossal.com/2017/02/drinking-straw-camera...
I know CCDs for astrophotography have large photosites to increase the signal/noise ratio. It seems like this array would have the same qualities.
Do you know what the dynamic range is, how many stops the sensor can capture?
This is really interesting, so I'd really like to see a write-up instead of just a video.