Post AhZ7LwQTB91xdTdPyS by kurth@social.tchncs.de
(DIR) More posts by kurth@social.tchncs.de
(DIR) Post #AhZ5p0I7gczo76Sdma by foone@digipres.club
2024-05-05T01:01:53Z
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So I got this thing at ewaste. It's a Richtech Automated "AI" Temperature Screening System. Time to open it up.
(DIR) Post #AhZ5xBCf04sQGynw9o by foone@digipres.club
2024-05-05T01:02:15Z
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I'M IN
(DIR) Post #AhZ66XKW6RmrVIwOvY by foone@digipres.club
2024-05-05T01:03:43Z
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This thing has a lot of small PCBs. I think they prototyped this thing FAST rather than trying to cut down on the cost. So this is probably from early in the pandemic.
(DIR) Post #AhZ6E9AvnEZcuG5PW4 by foone@digipres.club
2024-05-05T01:06:28Z
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One module is just a camera. It's built around a Sony STARVIS IMX327. Full HD (2 Megapixel) fixed-focus, MIPI output. This is basically just your standard raspi camera
(DIR) Post #AhZ6L3laIkCe9sWj4K by rotopenguin@mastodon.social
2024-05-05T01:07:12Z
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@foone well that's a fair chunk of aluminium milled out there
(DIR) Post #AhZ6S9f4mYRAT6rk0m by foone@digipres.club
2024-05-05T01:07:51Z
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This SR602 module is an infrared motion detector
(DIR) Post #AhZ6dRX8fu135CXHpA by foone@digipres.club
2024-05-05T01:10:59Z
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Mounted next to the camera is this module, labeled IRT_621_V1.1I believe this is an i2c thermal camera. It looks very similar to this one, which has a resolution of 16x16:https://www.midastouchinc.com/product/thermopile_array_module/
(DIR) Post #AhZ6kok2mmsd5Z5Xt2 by foone@digipres.club
2024-05-05T01:12:09Z
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Here's the weird part that made me think "oh this definitely needs to be a thread": I pulled the heatsink off and cleaned up the CPU module, and it's an HI3516.
(DIR) Post #AhZ6rNxEmKGY2LOKSO by foone@digipres.club
2024-05-05T01:12:45Z
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I thought that this would mean it's just a standard CPU module, but nope! it's specialized.This is an IP Camera! https://www.burglaryalarmsystem.com/pdf/Hi3516%20DataBrief.pdf
(DIR) Post #AhZ70Vkj9cZApRtKXQ by foone@digipres.club
2024-05-05T01:14:30Z
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It's an Arm Cortex A9, up to 800mhz. It can encode H.264 or MJPEG. It can do face detection. Apparently it is based on Linux 2.6.35? It just needs some magnetics to talk ethernet and it can do wifi over USB or SDIO
(DIR) Post #AhZ7C3O8RDvgKipOjI by foone@digipres.club
2024-05-05T01:16:41Z
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Two half-gigabyte K4B4G1646E DDR3 chips from Samsung
(DIR) Post #AhZ7LwQTB91xdTdPyS by kurth@social.tchncs.de
2024-05-05T01:18:03Z
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@foone wow they crammed everything in there except 4g
(DIR) Post #AhZ7blbjAXveiTRlDc by foone@digipres.club
2024-05-05T01:17:45Z
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And another Samsung chip: A 4 gigabyte KLM4G1FETE eMMC chip
(DIR) Post #AhZ7boFVLcw2uQ4YUq by foone@digipres.club
2024-05-05T01:18:41Z
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MXC MX35LF1GE4AB: 128 megabytes of serial flash.
(DIR) Post #AhZ7yq7kXjDzNtQWfI by foone@digipres.club
2024-05-05T01:19:32Z
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TMSEMI TMS1102NL:This is the ethernet magnetics, so this thing is ready to go for wired networking
(DIR) Post #AhZ7ysws2dIy91MNcm by foone@digipres.club
2024-05-05T01:22:02Z
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And the only major chip on the big PCB is a Unisonic Technology MC34118, which is a voice switched speaker-phone circuit. So it's got some audio amps and automatic gain control.
(DIR) Post #AhZ7yuqD0NAG0wG5WC by foone@digipres.club
2024-05-05T01:24:34Z
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This thing has a speaker but no mic that I see. And I guess that IP camera module has video output?
(DIR) Post #AhZ8QDoIaOaUfHNy5Y by olav@theweird.space
2024-05-05T01:23:17Z
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@fooneThere's a Realtek 10/100 chip in the upper left, but I don't think it has an integrated PHY
(DIR) Post #AhZ8oIbqOWjuV02bSK by foone@digipres.club
2024-05-05T01:26:02Z
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Forgot to mention this chip:Realtek RTL8201F. That's a 10/100 ethernet chip.
(DIR) Post #AhZ9giDNPVwJYAXhkO by grumble209@techhub.social
2024-05-05T01:45:05Z
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@foone Mark of the Beast. I hate crabchips.
(DIR) Post #AhZBHm8RtfT0NVTUn2 by glassbottommeg@peoplemaking.games
2024-05-05T02:03:17Z
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@foone oh shit! One of those bullshit face scanning things they deployed everywhere during COVID lol
(DIR) Post #AhZEJSlnASqSl7NDay by amoose136@3dp.chat
2024-05-05T02:37:09Z
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@foone 🦀
(DIR) Post #AhZWTrSg1AThPSXZ6e by byteborg@chaos.social
2024-05-05T06:00:15Z
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@fooneFriends don't let friends use Realtek... 😋
(DIR) Post #AhZWdOAhluGRSrg3e4 by byteborg@chaos.social
2024-05-05T06:01:21Z
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@fooneThe 15W figure is scary at best...
(DIR) Post #AhZXOduN569ZsgZNyK by woolie@mastodon.social
2024-05-05T06:10:44Z
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@foone as always, thank you. It sure is fun following along.
(DIR) Post #AhaIqZhH1mZ4m3GS1Y by chunter@mstdn.social
2024-05-05T15:00:19Z
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@foone Is that one of those things you walk up to and it says "Please wear a mask"
(DIR) Post #AhcoZED1FgTO3ZnzLk by Mondobizarrro@social.xenofem.me
2024-05-06T20:08:26.649569Z
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@foone crab
(DIR) Post #Ahd30BVIofVCqO6ZsG by ScotttSee@mastodon.sdf.org
2024-05-06T22:48:33Z
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@foone I'm guessing it was a pandemic "fever detection" cash grab and they could charge whatever they wanted for it so faster > cheaper.I looked at similar units for my employer and they were asking between 500-1500 for them. We passed and bought a cheap forehead thermometer instead.