Daily Archives: 2021-01-18

Everything you need to know to design your own CNC router

Posted on 2021-01-18 by pappp

Source: Hacker News

Article note: There are details I would quibble about (I can claim experience, I've had 3-ish machines myself and helped others with several more) - only discussing grbl derivatives for machine control, no bldc spindles, no discussion of coolants/blowers, etc. - but it is, generally speaking, a really nice intro that covers most of what someone should be thinking about if they want a baby CNC machine.
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Software effort estimation is mostly fake research

Posted on 2021-01-18 by pappp

Source: Hacker News

Article note: I consider most of "software engineering" to be a fake/failed field, but that's more egregious than usual.
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Router Replacement: Asus RT-ACRH13

Posted on 2021-01-18 by pappp
RT-ACRH13 being flashed.

I’ve been running a TP-Link Archer C7 flashed with OpenWRT at home since early 2016 (and a TP-Link 1043ND with OpenWRT for years before that), but since I moved into my current place over the summer it has been falling over every couple weeks. It hasn’t been logging anything (I have a flash drive mounted that it persistent logs to) but goes down until hard reset, most likely just because of the load of two heavy stream/video-conference/file-sync users (…and probably not because of my kitten chewing on the antennas. Probably.) Rather than updating/diagnosing I decided that was a good excuse for a new faster router.

TL;DR: The Asus RT-ACRH13 is an excellent current-production OpenWRT host for ~$65 with only minor install challenges, and represents a significant upgrade over the Archer C7.

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