|
Oh they're just displays. Disregard!
|
#
?
Jan 20, 2016 16:47
|
|
|
|
| # ? May 25, 2024 20:54 |
|
|
The PineA64 project has successfully funded, and I'm in for one of the higher spec devices (which still cost less than a shipped pi 2). Eager to see what the real world performance will be like.
|
|
#
?
Jan 23, 2016 17:00
|
|
|
I almost went in for that but the international shipping was too offputting, especially with the wifi card costing extra later. Would love to hear about it when yours arrives though!
|
|
#
?
Jan 23, 2016 17:34
|
|
|
fishmech posted:The PineA64 project has successfully funded, and I'm in for one of the higher spec devices (which still cost less than a shipped pi 2). Eager to see what the real world performance will be like. Being specifically designed to run off a lithium ion battery should come in handy, not to mention the real-time clock.
|
|
#
?
Jan 24, 2016 03:25
|
|
|
I hope PineA64 performance is better than DragonBoard 410c, which for me benchmarks slower than a RPi2
|
|
#
?
Jan 24, 2016 04:47
|
|
|
I got a 2b for Christmas so I thought I'd try to use it as a small, convenient emulation machine, but I'm pretty underwhelmed by Retropie. I want to configure different control setups for each system, I'd like to turn off the ugly bilinear filtering and I'd like a way to get ROMs on to the thing without having to dedicate a USB stick to the task. Is there any way to do that without having to get arse deep in configuration files or arcane loving terminal commands? joedevola fucked around with this message at 03:18 on Jan 28, 2016 |
|
#
?
Jan 28, 2016 02:44
|
|
|
Does anyone sell the Raspberry Pi Zero for close to anything near $5 in the United States? Looks like they launched the hardware but other than the first batch, have any actually been sold? They've been sold out since inception as far as I can tell. It looks like Amazon is finally selling the Ra Pi 2 for $37 shipped, which is about $10 cheaper than it was just two months after launch.
|
|
#
?
Jan 28, 2016 06:48
|
|
|
Hadlock posted:Does anyone sell the Raspberry Pi Zero for close to anything near $5 in the United States? Looks like they launched the hardware but other than the first batch, have any actually been sold? They've been sold out since inception as far as I can tell. My advice is to not sweat it for awhile. Just use the more expensive ones for now, it'll more than pay off in reduced stress https://twitter.com/pimoroni/statuses/678962640056623104
|
|
#
?
Jan 28, 2016 07:43
|
|
|
MicroCenter sells them for $5, if you live near one.
|
|
#
?
Jan 28, 2016 08:03
|
|
|
At this point shouldn't they have learned having like 100000 of every new Raspberry Pi model made before starting to sell it will still result in them selling out by the end of the week? 
|
|
#
?
Jan 28, 2016 09:46
|
|
I CANNOT EJACULATE WITHOUT SEEING NATIVE AMERICANS BRUTALISED!
|
Naked Bear posted:MicroCenter sells them for $5, if you live near one.
|
|
#
?
Jan 28, 2016 15:20
|
|
|
In case anyone's interested, there's an off-the-shelf option for making a Pi Zero cluster coming: http://hackaday.com/2016/01/25/raspberry-pi-zero-cluster-packs-a-punch/
|
|
#
?
Jan 28, 2016 20:47
|
|
|
poeticoddity posted:In case anyone's interested, there's an off-the-shelf option for making a Pi Zero cluster coming: http://hackaday.com/2016/01/25/raspberry-pi-zero-cluster-packs-a-punch/ That's awesome and I want one but at the same time there's no way it stacks up to the cost/performance ratio of an actual PC. Edit: I mainly think it's neat from a computer science perspective and I'd want to see how it works in person and play with it, but the guys who made it want to actually use it for something practical which is 
BattleMaster fucked around with this message at 21:06 on Jan 28, 2016 |
|
#
?
Jan 28, 2016 20:58
|
|
|
I love that the guys who built a board for a 16 Pi cluster only have one Pi.
|
|
#
?
Jan 29, 2016 00:19
|
|
|
It might be handy for testing ARM software builds, like with a continuous integration server. For doing any significant computing though a couple Xeons will blow it away.
|
|
#
?
Jan 29, 2016 01:50
|
|
|
One aarch64 system will drink that cluster's milkshake
|
|
#
?
Jan 29, 2016 05:03
|
|
|
Mattavist posted:I love that the guys who built a board for a 16 Pi cluster only have one Pi. Yes, but if they figure out how to manufacture that 16 slot "mother"board for $20, they could sell a 16 core beowulf cluster for $100 + S/H. Probably not hugely helpful for the average user, but if you're developing clustered docker containers for high availability stuff, that would at the very minimum be interesting. You're probably better off spinning up 3-7 node clusters as VMs on your laptop, though. Somebody will find it amusing enough to buy and assemble. Edit: 1 amp @ 5v != 1 amp @ 120v; 16 amps at 5v is approx 0.6 amps @ 120v Hadlock fucked around with this message at 05:28 on Jan 29, 2016 |
|
#
?
Jan 29, 2016 05:19
|
|
|
16 amps maybe if your mains voltage is 5 VDC. It's 130 watts which is something like 1 amp (plus some waste from the wall wart) from North American mains. Edit: The real problem is finding a wall wart that can output 16 amps at 5 VDC, lol Edit: lol #2 I can't do math, no idea how I got 130 watts from 5*16 BattleMaster fucked around with this message at 05:29 on Jan 29, 2016 |
|
#
?
Jan 29, 2016 05:25
|
|
|
BattleMaster posted:Edit: The real problem is finding a wall wart that can output 16 amps at 5 VDC, lol
|
|
#
?
Jan 29, 2016 05:34
|
|
|
nmfree posted:One of the pictures shows an external power supply, and the backplane has a barrel connector on it, so I'm assuming the whole thing runs off of a generic 12-24 laptop supply (or something like that). That was my thought but I'm not sure if ATX power supplies can output that kind of current on the 5 volt rail (I mean maybe they can, but they're set up for massive output on the 12V rail) and they also get grumpy if you don't load the 12V rail. Edit: Oh laptop  I'm on a rollEdit 2: Looks like they've got DC-DC converters on the board (fuckin' 16 of them) but they're next to USB connectors; who knows what's going on with that bizarre design the whole thing is weird and I'm guessing the same kind of logic went into the design as the choice to not actually have enough Pis to test it BattleMaster fucked around with this message at 05:39 on Jan 29, 2016 |
|
#
?
Jan 29, 2016 05:35
|
|
|
BattleMaster posted:Edit: The real problem is finding a wall wart that can output 16 amps at 5 VDC, lol Hell you can even get 5V 60A for a few bucks more. here for example: http://www.ebay.com/itm/301685560616
|
|
#
?
Jan 29, 2016 05:52
|
|
|
I bought an 8 Amp (40w) charger for ~$15 last month to charge my bicycle lights in the front hall, in theory you could get two of these and you'd be set. Bonus points: it uses a regular lamp plug and has the inverter built in to the "hub", so it doesn't eat up wall space like a regular wall wart. Amazon sells some other stuff like 4 port, 4amp USB 3.0 hubs for under $20. Way better than paying $10 for a 2amp charger, as it's double the amps and in most cases you won't have all four devices using peak power at the same time.
|
|
#
?
Jan 29, 2016 06:09
|
|
|
Why can't everyone settle on 12V? Astron power supplies kick rear end. I run a 250W ham rig off an Astron and they are the gold standard for zero-noise signal-grade power supplies everywhere. gently caress TTL voltage standards.
Paul MaudDib fucked around with this message at 07:08 on Jan 29, 2016 |
|
#
?
Jan 29, 2016 07:04
|
|
|
A lot of the modern stuff I am seeing, doesn't even allow 5v in on the GPIO, the Beaglebone Black will just roll over and die at 3.5v line voltage to a GPIO. Looking forward to the glacial transition to 1.8v line level everything 
|
|
#
?
Jan 29, 2016 07:16
|
|
|
Paul MaudDib posted:Why can't everyone settle on 12V? Astron power supplies kick rear end. I run a 250W ham rig off an Astron and they are the gold standard for zero-noise signal-grade power supplies everywhere. gently caress TTL voltage standards. Google was pushing for a 12V-only PC power supply standard to simplify the design of their custom server power supplies with individual lead-acid battery backup. Most of the power for a present-day PC comes from the 12V rail anyway, bucked down locally to whatever voltage is needed. I don't think the other rails get much of a workout anymore. 5V is a defacto standard for low-power devices because that's what USB gives though.
|
|
#
?
Jan 29, 2016 09:09
|
|
|
BattleMaster posted:Google was pushing for a 12V-only PC power supply standard to simplify the design of their custom server power supplies with individual lead-acid battery backup. Most of the power for a present-day PC comes from the 12V rail anyway, bucked down locally to whatever voltage is needed. I don't think the other rails get much of a workout anymore. We should be able to run everything on Potato batteries. https://www.youtube.com/watch?v=rSk_37So0Xk
|
|
#
?
Jan 29, 2016 10:19
|
|
|
BattleMaster posted:Google was pushing for a 12V-only PC power supply standard to simplify the design of their custom server power supplies with individual lead-acid battery backup. Most of the power for a present-day PC comes from the 12V rail anyway, bucked down locally to whatever voltage is needed. I don't think the other rails get much of a workout anymore. I don't know about open standards but I definitely have servers at work that only use 12V. If you look at the spec sheet for one (or the sticker on the power supply) it only lists 12V under DC outputs. Since this thing doesn't have floppy drives or PCI slots, I don't think it even uses any of the standard ATX voltages other than 12V so it would need to step that down to anything lower on the motherboard anyway. Ed.: Looks like PCIe has a few 3.3V pins and of course USB is 5V but I'm sure it's trivial to just regulate that on the motherboard if it's all that's left. Eletriarnation fucked around with this message at 20:55 on Jan 29, 2016 |
|
#
?
Jan 29, 2016 20:24
|
|
|
Eletriarnation posted:I don't know about open standards but I definitely have servers at work that only use 12V. If you look at the spec sheet for one (or the sticker on the power supply) it only lists 12V under DC outputs. Since this thing doesn't have floppy drives or PCI slots, I don't think it even uses any of the standard ATX voltages other than 12V so it would need to step that down to anything lower on the motherboard anyway. Ahah I just realized that the thing about Google's power supplies is like a decade old now so of course it's no surprise that servers have actually moved in that direction by now.
|
|
#
?
Jan 29, 2016 20:48
|
|
|
shaitan posted:I got a Pi2 for Christmas, it was one of those starter packs that included a LCD screen that I *think* is touchscreen as well, but I think I'm just going to sell that once I figure out what it is. I'm looking into using it to just play with sensors/cameras and just learn about how all that interacts. Eventually I'd like to learn more about putting together some neat little robot or some automated device just as a little hobby. I may have asked this here before but it was a while back and I don't recall what the responses were. Should I just pick up something like one of the following kits to start tinkering with since I have no clue what I want to start with? Anyone have any inputs on this?
|
|
#
?
Jan 31, 2016 23:18
|
|
|
You're never going to use half the modules in those kits. You need some female to male jumpers ($2 on AliExpress), a breadboard ($7), some 5mm red LEDs ($1), and whatever module you want to play with next ($2-4 each). In my experience, random tinkering doesn't work, you need to have a project in mind and work towards that. I'm planning on growing some plants and recording some metrics, for example. You may be different, however.
|
|
#
?
Jan 31, 2016 23:54
|
|
|
If you want to gently caress around with general GPIO stuff, i2c spi etc, it's best to begin with an arduino. Arduinos have the good fortune of being nearly impossible to kill by feeding too much current in to the wrong pin, wrong voltage, etc. Once you have a good understanding of what the hell you're doing, you can abstract things further with the RPIO Python libraries, etc Check out the adafruit documentation they have some excellent stuff for the Pi.
|
|
#
?
Feb 1, 2016 10:44
|
|
|
Also analog inputs on the pi isn't super cheap.
|
|
#
?
Feb 1, 2016 12:01
|
|
|
An ADC that works with the Pi isn't super expensive either. Adafruit has a couple breakouts for $10-15, which means that you could probably find the same thing on ebay or aliexpress for $4-5. https://www.adafruit.com/products/1085 http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR3.TRC2.A0.H0.TRS0&_nkw=ADS1115+&_sacat=0
|
|
#
?
Feb 1, 2016 16:42
|
|
|
That's p much the price of an atmel arduino tho.
|
|
#
?
Feb 1, 2016 17:08
|
|
|
evil_bunnY posted:That's p much the price of an atmel arduino tho. OTOH a 16-bit ADC may be significantly better than the 10-bit ADCs that usually come on Arduino/AVR chips depending on your application. Or it may be good enough! The Arduinos are always a really good consideration if you are doing things that cross into the "embedded" sphere of things. You have a lot more control over hard-realtime, you can still interface with USB/ethernet/etc depending on your module and/or breakouts/shields, and a power requirement that ranges between "a lot lower" and "multiple orders of magnitude lower".
|
|
#
?
Feb 3, 2016 02:31
|
|
|
If you want to go completely nuts ( ) there's a (single) 10 bit ADC pin on the ESP8266 but it meters 0-1023 from 0-1v which is... not how Arduino does it.I've been playing around with the ESP8266 recently on the Arduino IDE and it works really, really well. I was able to setup a PIR sensor that talks to ThingSpeak over wifi/internet via API any time it detects motion, in less than 100 lines of code (including serial debug + whitepace)
|
|
#
?
Feb 3, 2016 03:52
|
|
|
Paul MaudDib posted:OTOH a 16-bit ADC may be significantly better than the 10-bit ADCs that usually come on Arduino/AVR chips depending on your application. Hadlock posted:I've been playing around with the ESP8266 recently on the Arduino IDE and it works really, really well. I was able to setup a PIR sensor that talks to ThingSpeak over wifi/internet via API any time it detects motion, in less than 100 lines of code (including serial debug + whitepace)
|
|
#
?
Feb 3, 2016 09:41
|
|
|
evil_bunnY posted:Show yer work! http://pastebin.com/P6tCsM9P 
|
|
#
?
Feb 3, 2016 10:21
|
|
|
Thanks!
|
|
#
?
Feb 3, 2016 10:27
|
|
|
|
| # ? May 25, 2024 20:54 |
|
|
I'm trying to build a rPi-based dashcam, and have some questions. I've found this: http://pidashcam.blogspot.com/ I'm only interested in a single camera, but I don't want to use the rPi camera, but an HD IP camera using a larger sensor and interchangeable lenses. Is there enough computing power to: 1. Take in the IP camera's video stream 2. Overlay dynamic text (GPS location, speed, direction) 3. Store it to hard drive. I may bump up to a beefier computing platform so I have an SATA connection for an SSD, but a rPi would be an inexpensive starting platform. Anyone have any experience with motion and/or ffmpeg libraries, or have any good info about using the GPU to assist in the H264 encoding?
|
|
#
?
Feb 4, 2016 01:56
|
|
