Raspberry Pi 3 - Page 1
Forum section: electronics / general

author: TinkerFan
author_rank: Regular Contributor
timestamp: February 29, 2016, 07:50:55 am
content: Hello there,for those that haven't already seen it, the new raspberry pi 3 was released yesterday or so. Although the software doesn't support the built in Wifi and Bluetooth yet (Make Video on YouTube), it has it built in...It's also running at a faster speed (as probably every "upgrade" so far).Here's the link:https://www.raspberrypi.org/blog/raspberry-pi-3-on-sale/

author: NilByMouth
author_rank: Regular Contributor
timestamp: February 29, 2016, 08:27:01 am
content: bought one. Thanks

author: timb
author_rank: Super Contributor
timestamp: February 29, 2016, 09:16:19 am
content: Of course they moved the LEDs. They have to make sure each new Pi is *ever so slightly* different from the last, just to make absolutely sure we can't use the litany of existing cases. (You have no idea how frustrating it is to find the perfect case for a specific project, only to find out that it was designed for a B+ so the internal cutouts are a few mm off from the Pi 2 fitting.)Jesus Christ. Can't they standardize on a fucking form factor already? Damn, I must be getting old or something. Time to go chase some kids off my lawn.

author: MrSlack
author_rank: Frequent Contributor
timestamp: February 29, 2016, 09:33:06 am
content: I agree with you. It's like every PC motherboard coming out with a new form factor. Stupid idea. Nail the form factor then engineer it into that consistently.Also I genuinely have no use for these things. I've bought quite a few over the years with grand designs in mind and found a better cheaper solution. If I need some wumph it's lots of wumph and requires heavy ass Intel kit and the associated low levels of hassle, plus you can get a whole desktop PC for far less with things like real SATA and real serial ports. If I don't need wumph, an AVR or ARM uC will do the job. if I need some background processing, chuck it on Linode or something.

author: TinkerFan
author_rank: Regular Contributor
timestamp: February 29, 2016, 09:35:43 am
content: Oh and by the way, the missing software for the wireless stuff reminds me of the unbox in of the Pebble watch Dave did a while ago

author: SKPang
author_rank: Unknown
timestamp: February 29, 2016, 10:28:20 am
content: Just ordered one from RS.

author: Monkeh
author_rank: Super Contributor
timestamp: February 29, 2016, 10:59:09 am
content: Another CPU upgrade (woo, it's actually a modern processor now).. with the same old crap bolted on.I have a feeling the wifi will be hard of hearing too.

author: NilByMouth
author_rank: Regular Contributor
timestamp: February 29, 2016, 11:04:56 am
content: Quote from: timb on February 29, 2016, 09:16:19 amOne of the reasons why I bought a 3D printer. I looked at the price of the offered rPi 3 enclosure and that confirmed it was a good decision.

author: wraper
author_rank: Unknown
timestamp: February 29, 2016, 11:11:03 am
content: Damn this raspberry pi 3. Today on ebay two of my buyers already requested to cancel the order of rpi 2 made less than hour ago.

author: BloodyCactus
author_rank: Frequent Contributor
timestamp: February 29, 2016, 01:41:23 pm
content: Quote from: Monkeh on February 29, 2016, 10:59:09 amnice for me, I get a super upgrade for my embedded project and not have to change things. win win!

author: and101
author_rank: Contributor
timestamp: February 29, 2016, 04:28:43 pm
content: At least they kept the GPIO port and mounting holes in the same place this time. It was a pain when they changed to the new layout on the B+ as I had to redesign all of my expansion boards to fit the new design. I still have trays full of PCBs for the original layout which nobody wants to buy any more.

author: chickenHeadKnob
author_rank: Super Contributor
timestamp: March 01, 2016, 09:45:28 am
content: Hardkernel has just come out with the ODROID-C2:http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438- 2GHz quad core- 2 Gigabyte DRAM- 4K HDMI 2.0- about 40 to 42 US$ with heatsink included this timeNo wireless, for folks that prefer hardwired.

author: tszaboo
author_rank: Super Contributor
timestamp: March 01, 2016, 10:04:29 am
content: Quote from: timb on February 29, 2016, 09:16:19 amThe entire project looks like children playing with the PCB designer software. Mounting holes on the first version. Connectors on all 4 sides. SD card, not onboard memory. The crappy wannabe windows. MicroHDMI and the paper launch of the zero. The list of issues is longer than the list of features. Its like they just do some random things, and everyone goes crazy, and they go even into printed newspaper.

author: NilByMouth
author_rank: Regular Contributor
timestamp: March 01, 2016, 10:09:40 am
content: Quote from: chickenHeadKnob on March 01, 2016, 09:45:28 amI like the gigabit ethernet and adding wifi is trivial. It's 50% more expensive than a pi3 in the UK, but that only matters if you're bulk-buying and then you'd get a quantity discount I'm sure.Fromhttp://www.digitaltrends.com/computing/c2-offers-competitive-specs-to-raspberry-pi"... the Pi is still the most recognizable offering, and as Liliputing points out, the lack of a strong community pushing development forward may mean that the C2 does not become as popular as it might otherwise."

author: timb
author_rank: Super Contributor
timestamp: March 01, 2016, 10:21:24 am
content: Quote from: NANDBlog on March 01, 2016, 10:04:29 amI actually prefer the SD vs onboard flash. Look at the Beaglebone Black. 2GB was nowhere near enough. 4GB is pushing it. Especially considering how bloated their Debian distro is. (Raspbian is nearly as bad.)Just give me a uSD socket and let me sort storage out myself. (That way I'm not paying for a flash chip I never use.)All the other points I agree with.

author: tom66
author_rank: Super Contributor
timestamp: March 01, 2016, 10:38:33 am
content: Having 8GB microSD is especially useful for OSMC / Kodi as it allows for a large thumbnail cache, speeding up menu browsing. (My thumbnail cache is 500MB, but with the OS and all partitions and thumbnail cache I have just 1200MB free.)

author: Keridos
author_rank: Newbie
timestamp: March 01, 2016, 11:33:29 am
content: Ooh, gonna test this one out some time in the future, the inbuilt wifi is great for places where ethernet is not or simply ugly. But the release was a lot earlier than I expected some time ago.

author: and101
author_rank: Contributor
timestamp: March 01, 2016, 02:00:33 pm
content: It seems like there is a small issue with the UART port on the Raspberry Pi 3. I normally use a UART to USB adapter to set up new Raspberry Pis but when I plugged it into the new Raspberry Pi 3 that turned up this morning all I got was garbage on the console. After plugging my logic analyser into the UART port I found that the data coming out of the Raspberry Pi is about 1.6X slower than it should be. The baud rate should be 115200 but I had to set the USB adapter to 72000 for it to work.It seems that the new Raspberry Pi uses the original UART port for the new bluetooth adapter and the UART pins on the GPIO port is now a soft UART port which is dependent on the CPU speed and the current Raspbian Linux distro isn't doing the calculations properly to configure the baud rate.

author: BloodyCactus
author_rank: Frequent Contributor
timestamp: March 01, 2016, 03:02:40 pm
content: Quote from: and101 on March 01, 2016, 02:00:33 pmnooooooooooooooooooooooooooooooo! argh. I'm using the uart pins to do rs485 at 10mbps, after bumping the uart clock when linux boots.damn. damn damn.

author: timb
author_rank: Super Contributor
timestamp: March 01, 2016, 08:13:10 pm
content: Quote from: and101 on March 01, 2016, 02:00:33 pmWait, what? Soft UART?! Really?! Christ on a Cracker. Most SoCs have like a ton of UARTs (the Sitara on the BBB has at least 5 full UARTs with hardware flow control for example) so I assumed the BCM would have at least two. How could they think this was a good idea? Talk about amateur hour...

author: NilByMouth
author_rank: Regular Contributor
timestamp: March 01, 2016, 10:39:06 pm
content: Quote from: timb on March 01, 2016, 08:13:10 pmFor twice the price?

author: MrSlack
author_rank: Frequent Contributor
timestamp: March 01, 2016, 10:53:53 pm
content: Twice the price or twice the crap.Or usually both of it's Broadcom (way too much bad experience with their router SoC's and NICs)

author: Monkeh
author_rank: Super Contributor
timestamp: March 01, 2016, 11:37:01 pm
content: I'll just leave this here.

author: tom66
author_rank: Super Contributor
timestamp: March 01, 2016, 11:40:03 pm
content: That is one toasty die. Under what conditions was that achieved?The new RPi3 should pull 0.65A @ 5V when loaded fully, most of which will be dissipated in the CPU. That's 3.2 watts.

author: NilByMouth
author_rank: Regular Contributor
timestamp: March 01, 2016, 11:43:32 pm
content: Quote from: Monkeh on March 01, 2016, 11:37:01 pmSend it back for a refund. You've obviously got a faulty one.

author: Monkeh
author_rank: Super Contributor
timestamp: March 01, 2016, 11:48:24 pm
content: I never said it was mine. Far better things to spend money on..

author: timb
author_rank: Super Contributor
timestamp: March 02, 2016, 12:34:12 am
content: Quote from: NilByMouth on March 01, 2016, 10:39:06 pmThis was a SoC originally designed for mobile phones. Phones which usually contain more than one radio, with each radio requiring a UART for baseband or firmware programming. (Some units can do it over SPI or other high speed links now, but it wasn't common when this SoC was originally designed.)I don't have access to this BCM's TRM, but I assume it does in fact have multiple UARTs. If I had to guess, I'd say either they originally planned to share the single UART between the BT module and header *or* it was an afterthought. Maybe they had routing issues? Or pin assignment problems. It could even be a bug in the SoC.Whatever the reason, it seems like a glaring oversight. To be honest, I'm surprised they went with a UART based BT module. SPI is very common for BT modules. Hell, they could have even used a combo BT/WiFi chip that talks over the memory interface! (Those are expensive though, so I can understand why they didn't.)There's a nice Maxim SPI to UART bridge chip that even has a Linux driver. I should design and sell a hat with a couple of those on it. I bet it would sell well now.

author: R_Gtx
author_rank: Regular Contributor
timestamp: March 02, 2016, 12:39:24 am
content: Quote from: tom66 on March 01, 2016, 11:40:03 pmThere is a discussionhere

author: tszaboo
author_rank: Super Contributor
timestamp: March 02, 2016, 09:27:02 am
content: Quote from: Monkeh on March 01, 2016, 11:37:01 pmSo now, not only do you need a plastic case, and external non-standard (2.5A) USB "charger" a powered hub, an SD card adapter, an SD card, bunch of software, to have a very slow computer, but also a heatsink. And a ton of time to make a usable operating system, which will still lack space, usability, since it is either a crippleware widows or linux.Meanwhile in a parallel universe, mini pcs are sold for 150 Euros. Or used pcs are picked up for free.Makes total sense. At least they soldered the header.

author: atcurtis
author_rank: Newbie
timestamp: March 02, 2016, 09:45:07 am
content: I am personally more interested if a 3 A model comes out with bluetooth/wifi.Given the stock of Pis I have, I think I will probably not get a 3 B unless if I actually need it.

author: problemchild
author_rank: Newbie
timestamp: March 02, 2016, 09:58:44 am
content: I think the 2.5 A is a potential feature as this was more about how much current the unit could deliver to the USB peripherals rather than what it required for it's self. That said you will still need to get the big 5V PSU out to power it as you said. The real PITA is that most of those larger 5V supplies have a DC Jack rather than a micro USB... think I may have a few 2 A units at home! L8R!Quote from: NANDBlog on March 02, 2016, 09:27:02 am

author: problemchild
author_rank: Newbie
timestamp: March 02, 2016, 10:03:42 am
content: Ha Forgot to put a link to my RPI 3 vid ... Only first impressions at the moment since I'm stuck in my Hotel until Thursday night when I'll do more in depth stuff

author: TonyPh
author_rank: Regular Contributor
timestamp: March 02, 2016, 08:32:09 pm
content: Tempted to get one to replace the Pi B I use on my TV in the bedroom. Thing is the Pi B does everything I need of it....I could also replace the Odroid C1 I use downstairs but that does everything I need of it too, and does Gigabit ethernet...Was poised over the buy button but sense prevailed. Will buy when I find a reason to buy. Pi 4 maybe.

author: briandorey
author_rank: Regular Contributor
timestamp: March 02, 2016, 09:38:20 pm
content: After spending most of the day trying to get the serial console to work via the GPIO header and using a script fromhttps://www.raspberrypi.org/forums/viewtopic.php?f=107&t=138223to remap the hardware uart from the bluetooth module to the GPIO pins, its time to give up and stick with using the Pi 2 for projects until they sort out the overheating issues and broken serial supportEven with the Pi 3 just using a ssh console the processor is getting too hot to touch. On the plus side i can always use it to keep the cup of tea warm

author: timb
author_rank: Super Contributor
timestamp: March 02, 2016, 11:28:56 pm
content: Just get a small heatsink. I've always used the 1"X1" solid copper heatsinks for my Pis. You can buy them in 8 packs for less than $10 on Amazon.

author: Stonent
author_rank: Super Contributor
timestamp: March 04, 2016, 03:50:13 pm
content: Does this one have the reboot with camera flash feature?

author: fantis1337
author_rank: Contributor
timestamp: March 04, 2016, 04:10:52 pm
content: Not gonna bother with the newest pi. Have my pi2 that has worked wonders for the projects I have used it on.

author: Fred27
author_rank: Unknown
timestamp: March 04, 2016, 04:20:18 pm
content: I doesn't seem to be about need.Nobody *needed* a Pi Zero. Unless you were ready to go with a finished design that needed to be smaller, an existing Pi would do the job. That didn't stop them selling out though.

author: stejep
author_rank: Contributor
timestamp: March 05, 2016, 05:13:26 am
content: I have too many of these things already, the original Pi, the Pi 2, a couple of Udoo's, oh the Pi Nano, and waiting on the Pine A64 from kickstarter.I think I am going to stop, looks like there are too many of these things coming out of the wood work and they are just getting better. If we wait say a year, what are they going to be doing ?

author: Kilrah
author_rank: Unknown
timestamp: March 05, 2016, 07:12:01 am
content: Thishttps://www.crowdsupply.com/krtkl/snickerdoodle