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I spent a long time looking for e-ink a few years ago and found that the hardest part was finding a source that actually sells to consumers. Most of them were bulk order type deals. I had this grand idea of a pi powered car mp3 player with e-ink for a screen but it was not to be.
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Jan 29, 2018 00:30
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| # ¿ May 5, 2024 04:36 |
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Yep, that's why e-ink is so loving cool. Their refresh rate is bad compared to LCD but for static images they have a "permanence" that can't be beat. I feel myself getting sucked back into that hole, because they got 7.5 inch screens for $60-ish. 
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Jan 29, 2018 18:36
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Open another window on your windows machine and ssh into the pi again. tmux is more about running multiple shells over the same connection. Which you can also do, but is a learning curve that might be overkill at this point.
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Feb 3, 2018 23:03
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Run vnc server on your desktop and a vnc viewer on the pi? You can run the viewer in a no-interaction mode. I tried this as a thin client setup with a first gen pi and it didn't work for poo poo, but now that the pi has a decent clock speed maybe it's not too bad.
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Feb 15, 2018 20:48
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What kind of dongles does it need? It's just a dns server isn't it? Unless you're talking about doing it with a zero.
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Feb 24, 2018 20:29
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Yep, once I get ssh running with my rsa keys no pi has a display or keyboard plugged into it.
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Feb 24, 2018 21:13
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pihole in its default configuration is just a dns server. The only thing it's doing is fielding a dns lookup from your computer, checking the ip against the blacklist, and if it passes it relays the query to an upstream DNS to get you the ip that matches the hostname. This is a trivial amount of traffic and well within the capabilities of even a first gen raspberry. There might be a couple extra milliseconds to resolve hostnames because an additional server is in the chain but this only happens on the first lookup (the result will be cached for some period) and is the same delay you'd get using your ISP's dns server. Your actual network transfers never touch the pihole. There can be issues with pihole when ipv6 and ssl get involved, which they have some documentation for if you dig around.
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Feb 26, 2018 20:54
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No, it's loving awesome is what it is.  I have two pis currently hanging off my router, one is a model b running pihole and the other is my generic ssh access/git repo server. (and I have two more for actual hobbyist stuff) Put a pi in every room!
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Feb 28, 2018 04:49
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The network boot still requires an SD card to be in the slot so I'm not sure what it buys you. If there's OS config you want to ensure a given pi is using, maybe there's some small scale configuration management tool out there. Puppet would definitely work but that's hilarious overkill for a small home environment.
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Feb 28, 2018 17:41
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It is cool, but as the link demonstrates it's a very fussy process and not the sort of thing where you can rewind and try again. I think getting the pi in a case with minimal holes and sealing the seams with epoxy would be just as effective and less error prone. (but maybe do it on a very low humidity day)
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Feb 28, 2018 20:53
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Who's got time to read up on specifications when you could just goop something!
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Feb 28, 2018 22:15
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Yes, it asks you during setup if you want it to function as a dhcp server.
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Mar 1, 2018 04:14
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My pihole is running raspbian lite so it's certainly supported. Best guess is whatever it uses to determine the OS flavor is messed up somehow. Assume you've already tried it, but if not run a full apt-get upgrade and see if it helps.
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Mar 1, 2018 16:35
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gently caress wiring in cars. My weekend project has been to replace a stereo and loving hell it's a lot more of a mess than the last time I did it (back in the 90's). So many wires!
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Mar 11, 2018 19:10
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Did you tape two male RCA connectors together tip to tip?  Not Pi related, but it is "tearing your car part related." This was my car yesterday:  Trying to get a back up camera and a gps receiver wired in all pretty looking turned into a rabbit hole. In hindsight I should have gone with your "gently caress it make it work" strategy because snapping out every single piece of interior trim blows. Ended up paying $15 for access to Toyota's maintenance documentation to get diagrams of how everything pulls apart. Would have saved a ton of time if I'd done that from the start.
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Mar 12, 2018 19:26
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Sandisk is the can't go wrong brand. $45 for 128gb seems low to me, what speed class are they?
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Mar 14, 2018 00:13
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Yes, SD card specifications are a loving disaster. Fortunately the specification group has a handy chart, which literally no one can remember and ends up googling every time they want to buy SD. https://www.sdcard.org/developers/overview/speed_class/
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Mar 14, 2018 00:26
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GobiasIndustries posted:lol that speed chart doesn't clear much, if anything, up compared to the amazon product descriptions, i'm probably gonna just go with the best rated ~$40-50 128gb card since I'm not shooting 8k video with it. Yeah true, but amazon's product descriptions have grown into moldy poo poo over the past few years so that's not really a surprise. I was linking it more so you could squint at the logos on the product itself. My MO for SD cards is to buy whatever sandisk is selling for $50.
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Mar 14, 2018 03:29
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Biggest issue with the pi getting poe is it means I need to replace my router with one that has poe making a $35 purchase at least $100.
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Mar 14, 2018 14:49
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I use ubiquiti for my wifi, but I am a huge mikrotik fanboy for my wired router. Their CLI is really unorthodox but it's been around forever so answers are pretty easy to google.
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Mar 14, 2018 16:11
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Yeah, it's just geeking out. I have a shelf in my basement where my internet comes into the house and my WiFi and Pihole are hanging off the router. Power them both with poe and I could get rid of two wall warts! Mega efficient!
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Mar 14, 2018 16:48
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If you want lots of power in a small box, get a NUC or something. If you want to gently caress around with servos or cameras or any other goofy electronics project you can think up, get a pi. The pi is amazing for what it is, not sure why people want it to be a super computer.
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Mar 16, 2018 17:04
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I may have been using hyperbole for comedic effect.
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Mar 16, 2018 18:45
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Check iptables (iptables -nL)? It reads to me like something shut down outside access.
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Mar 19, 2018 17:39
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Next step is buy a weather station and register with CWOP! That way you don't have to harvest NOAA's information but can be a part of it. 
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Mar 21, 2018 22:34
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Traditional method is a cron job that periodically checks its public IP and updates a dns server somewhere. dyndns was how you did it back in the day, not sure if they're still around/reputable. I do it with my digitalocean vps because they have a really cool dns API and I host my personal stuff there already.
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Mar 22, 2018 15:52
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Having a proper soldering iron in the house takes so many ideas from "eh, maybe not" or "gently caress that would be expensive" to "spent an afternoon making something awesome."
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Mar 24, 2018 04:38
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I'll have you know I've fixed way more stuff with a soldering iron than broken it! Granted an actual electrician would poo-poo everything because the results look like poo poo, but stuff works.
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Mar 24, 2018 13:23
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I just use that for brevity, gently caress if I'm gonna type out "electrical engineer" every time it comes up.
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Mar 24, 2018 16:59
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Electrolyte, that's my final offer.
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Mar 24, 2018 19:10
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Buy a full size pi then.
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Mar 25, 2018 00:18
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eddiewalker posted:
I tried this last summer and it's a bit of a fussy solution.. largely because my brains drool out of my ears whenever I dig into wifi configuration under linux because all the documentation is written with the assumption you already know how to do everything. Long story short I was using my pi to control my camera out in the sticks and I wanted it to be an AP so I could connect my phone to it, open an ssh connection, and fire off some scripts. Eventually I landed on a config that worked really well with my phone (ios was even smart enough to continue to use my LTE connection for normal internet access), but my windows laptop lost its poo poo when trying to connect to it. It'd fail to get an ip a lot, and when it did get an ip communication was super hit or miss. 
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Mar 28, 2018 16:27
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Can you have it exclaim that wizard came from the moon every time someone enters the room?
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Apr 12, 2018 19:41
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Any car sold in the US since 1996 will have obd2 interface on it, which is the easiest and most common way to get this data, I think at 1 second resolution. For stuff without that interface you gotta hack it. As for doing with with a raspberry, there is a python library that pretty much everyone relies on: http://www.obdtester.com/pyobd
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Apr 12, 2018 21:42
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Just be real hesitant about plugging a bluetooth or wifi (or even cellular) enabled obd2 reader into your car. It creates an attack surface and proof of concepts are out there for dicking around with brakes and steering.
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Apr 12, 2018 21:51
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That lifepo4 is unbelievably cool and I'm sad I hadn't heard about it until now. All my away-from-home pi projects so far have been lugging a battery pack and being careful to shut down over ssh before I unplugged everything, I never even thought to look for a UPS type solution.
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Apr 12, 2018 22:45
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Then write the forum software from scratch and never release the source! Problem solved, not sure why more people don't do it this way.
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Apr 13, 2018 15:25
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To give some hard numbers, a single gpio pin on the pi can output 3.3v at 16mA (roughly, see the link). Overall max output is 51mA. A single LED will use 15mA so it's not hard to see how easy it is to overload a pi.. you can run 3 LEDs before hitting maximum. Running a motor off the pi is even less realistic. The specifics of the power output are actually way more complicated if you want to get your hands dirty, read this: http://www.thebox.myzen.co.uk/Raspberry/Understanding_Outputs.html
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Apr 19, 2018 16:07
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Years ago I tried running btsync on a rev 1 pi and it would constantly crash trying to handle large files (roughly 500mb and up), it just didn't have enough memory to handle the file and the associated indexing. Newer ones are probably fine but it is something to keep an eye on.
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Apr 21, 2018 18:21
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| # ¿ May 5, 2024 04:36 |
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I ran a pi 3 off a 7800 mAh battery for like 3 hours and it used maybe 10% of the battery. It was just running a python script that sent commands over usb and fired off a signal on a gpio pin every few seconds so it wasn't doing that much, but it gives a sense of scale for how efficient the pi is. Get a 20,000 mAh power source and I would bet you could run the pi and camera for 24 hours before it dies.
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May 3, 2018 23:53
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