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This is a minimal circuit to get an ATMega328 running solo, without the Arduino board and USB stuff

If you leave out the 16MHz crystal and use the onboard 8MHz clock, you can bring down the power consumption even more, but at lower speed, obviously

The thing to keep in mind that the Arduino pins and the ATMega chip pins aren't the same. There's some mapping translation involved if you're using the Arduino IDE to program one

#HardwareHacking

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Turns out the reason I can't ssh into my new VPS from the office is not any of {"because it's down", "because it's firewalled", "because there are weird DNS problems"} but "because I was spelling the hostname wrong".

There is some level of irony here: https://mastodon.social/@telent/100013088526728986

https://thehackernews.com/2020/03/ppp-daemon-vulnerability.html

"Most Linux systems" seems like quite s strong claim: the vast majority don't even run pppd, and of those that do, surely they run it only on the network interface corresponding to their uplink port? Are there use cases for running pppd on an Internet-accesible interface?

Critical PPP Daemon Flaw Opens Most Linux Systems to Remote Hackers

Critical Point-to-Point Protocol Daemon Remote Code Execution Vulnerability...

The Hacker News

If you can see this, I moved hosting for terse.telent.net from Bytemark to Mythic Beasts. This is the first of several services that need migrating from my old VM to my new one.

(The zeroth was DNS: now instead of using Bytemark's content dns I am running an actual DNS server with actual zone files, and I cannot tell you how much more pleasant it is for setting up AAAA records than futzing with tinydns format files was)

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I got a DHT22 to replace the DHT11 in my temperature logging thing. It doesn't like me putting the ESP into deep sleep mode: the workaround is to power it from a GPIO so that I can turn it off before entering sleep and turn it back on when I need it. But - when running off 3xAA NiMH, I only get 2.8v from the GPIO pin which is not enough to run the sensor in the first place. Sigh.

Also, don't use GPIO2 on a "Witty Cloud" ESP12F board, it's the tiny blue LED. The DHT11 didn't mind sharing but the DHT22 just won't work when wired to it

While upgrading to #Firefox 72 I accidentally reverted from #wayland native firefox to X11 firefox, which means that (because I have a hidpi screen and non-integer scaling) all my fonts are fuzzy. Just switched back and found that I now have kinetic/inertial scrolling too.

Which would be nice, except it takes way too long to slow down after I take my fingers off the touchpad, and the zillion and one things I can tune in about:config don't appear to include #kinetic scrolling friction

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