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Williac
Joined: 25 Feb 2022
Posts: 933
Location: Canada
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 Posted: Sat Apr 15, 2023 7:21 pm Post subject: Cromenco digital camera using Mostek MK4008p-9 as sensor |
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Found this whole looking for info on the MK4008p. Apparently you could delid them and use them as image sensors?
Rudimentary digital camera on a S100 bus machine. Wild.
http://wsudbrink.dyndns.org:8080/cyclops/index.html |
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LSM
Joined: 08 Dec 2014
Posts: 70
Location: Denmark
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| Posted: Sun Apr 16, 2023 12:23 pm Post subject: |
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| Yes indeed. The Cromemco Cyclops was a very early digital camera that was introduced in 1975. It used a 1K RAM chip. I've been looking for the camera for a while but they only rarely turn up for sale. |
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Williac
Joined: 25 Feb 2022
Posts: 933
Location: Canada
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| Posted: Sun Apr 16, 2023 1:26 pm Post subject: |
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It’s pretty crazy to see that the die from a CMOS RAM chip can be used as a sensor. The link I visited actually was for a gentleman that built a compatible camera from scratch using original components and a custom fanned PCB that mirrors the original spec.
He’s even got the schematics and kicad files if anyone wants to give it a go. |
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yy2013
Joined: 12 Sep 2009
Posts: 739
Location: Nagoya, Japan
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| Posted: Sun Apr 16, 2023 5:32 pm Post subject: |
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Extremely interesting!
By the way, I think MK4008P is an NMOS dynamic RAM chip. Maybe the charge in the dynamic RAM cell is unstable enough to be affected by incoming light. |
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berni
Joined: 17 May 2011
Posts: 59
Location: Germany
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| Posted: Mon Apr 17, 2023 4:14 am Post subject: |
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| If I remember correct, I've seen an article in the German ELEKTRONIK magazne how to build a camera out of decapped DRAM chip and some PALs. I think it has been in the late 80's... |
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