like this, tried to do something similar - even bought 2 hdmi to av adapters from flipkart for 150 bucks each ... Would only consider this a novelty (or a proof-of-concept) project and won't really recommend this for actual usage - definitely not with the analog A/V outs on these no-brand...
It took a while (finances are such a mess) but the first of my many mini-itx projects is done. Well, the first revision of the first one anyway (holes aren't correctly spaced in the dxf I made @tech.monk
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It's a dual/redundant wall-mounted adblocker server thing. It has two mini-itx motherboards each featuring that ultraslow VIA U3300 processor with 2GB of ram running Diet-Pi, one with pihole and the other with adguard. These boards are run directly off 12v and each costed Rs 900 from a dealer on OLX who salvaged them from old point-of-sale systems.
The two motherboards are mounted on a IKEA memo board, one from their SVENSAS series: https://www.ikea.com/in/en/p/svensas-pegboard-with-letters-dark-grey-40458704/
I've some rough photos that make up a mini project worklog below.
Some testing to see what the end voltage is after a 3m run, these boards will crash if the voltage falls below 11.4v:
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Over the years, I've collected odds and ends from buying stuff off OLX. One of these is this disk-on-module thing that plugs into the SATA port and runs off 5v, this module is 2GB:
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This one is from a thin client and has a standard SATA interface:
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I got this short SATA cable during the Aliexpress days:
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The corners have these 40mm tall pieces of 10x10 extrusion, called Makerbeam. These were purchased from tinkerforge.com and imported without customs through regular post. They help position the 3mm ABS plastic sheets I'm using as the walls of the enclosure, and they're threaded on both ends:
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How everything is mounted, the three 120mm fans are pulled from a Silverstone FARA R1:
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A buck converter board is used to pull down the 12v to 5v for the ESP8266 module:
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The 12v is taking from the EPS connector, which is connected to the DC jack on the rear of the motherboard:
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A NodeMCU clone is the wifi module I'm using to control the lighting on those fans, it's running WLED:
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The front panel is 3mm clear acrylic that I sanded down for a frosted effect. I glued the jewel inserts before sanding, this is what ended up causing the acrylic to stress and crack:
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40mm is plenty tall for the components:
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I think this qualifies as my first 'scratch build' since maybe 2015?
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Basic cable management is at the rear (also shown are the power switches):
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One last beauty shot:
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It needs more RGB lighting, I'll fix that in the next revision since I need to redo that front panel sometime anyway.