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Introducing Raspberry Pi B+

raspberrypi.org

41–50 of 223 posts

Re: Introducing Raspberry Pi B+

#41
post #32

I'm interested in Raspberry Pi. I bought one before. It's just a small PC, use one hand you can hold it. But when you want to Raspberry to do some complex works, it let you down. I want to know where does Raspberry Pi can work well?

There are lots of little embedded projects the Pi is great for, check out this for some inspiration: https://learn.adafruit.com/category/raspberry-pi

Re: Introducing Raspberry Pi B+

#42

What's the same: - Same Broadcom BCM2835 Chipset - Same 512MB RAM - Same full size HDMI port - Same 10/100 Ethernet port - Same CSI camera port and DSI display ports - Same micro USB power supply connection What has changed: - Now comes with 4 USB ports so you can now connect more devices than ever to your Raspberry Pi. - There is a 40pin extended GPIO so you can build even bigger and better projects than ever before…

plus better mounting.

Re: Introducing Raspberry Pi B+

#44
post #35

I still can't see why would anyone buy one except as one of those toys that you buy and then gets tossed in the closet. 10 years ago I could see the appeal, but now? The robotics, home automation, and weekend project use cases seem like would be better served by a $5 microcontroller. Some projects, such as the weather station, justify the use of a full-fledged OS, but with the cost of buying an existing, proven, weat…

I can run python on it. Yes, I'm aware of http://www.pymcu.com/index.html , but they're cheap enough for projects and familiar enough for people vaguely familiar with Linux that it ends up being a good combination for lots of fun projects. It's probably overkill for >90% of things people use it for, but usability is the big advantage.

Re: Introducing Raspberry Pi B+

#45
post #35

I still can't see why would anyone buy one except as one of those toys that you buy and then gets tossed in the closet. 10 years ago I could see the appeal, but now? The robotics, home automation, and weekend project use cases seem like would be better served by a $5 microcontroller. Some projects, such as the weather station, justify the use of a full-fledged OS, but with the cost of buying an existing, proven, weat…

My understanding is that the Raspberry Pis are intended to be used in education. The front page says: "We want to see it being used by kids all over the world to learn how computers work, how to manipulate the electronic world around them, and how to program."

That said, I use mine as a simple NAS for backups.

Re: Introducing Raspberry Pi B+

#46
post #45
post #35

I still can't see why would anyone buy one except as one of those toys that you buy and then gets tossed in the closet. 10 years ago I could see the appeal, but now? The robotics, home automation, and weekend project use cases seem like would be better served by a $5 microcontroller. Some projects, such as the weather station, justify the use of a full-fledged OS, but with the cost of buying an existing, proven, weat…

My understanding is that the Raspberry Pis are intended to be used in education. The front page says: "We want to see it being used by kids all over the world to learn how computers work, how to manipulate the electronic world around them, and how to program." That said, I use mine as a simple NAS for backups.

The problem is that it's too slow to be used as an actual development computer, so you have to write your code on another computer and then copy it over to the pi.

Re: Introducing Raspberry Pi B+

#47
post #35

I still can't see why would anyone buy one except as one of those toys that you buy and then gets tossed in the closet. 10 years ago I could see the appeal, but now? The robotics, home automation, and weekend project use cases seem like would be better served by a $5 microcontroller. Some projects, such as the weather station, justify the use of a full-fledged OS, but with the cost of buying an existing, proven, weat…

Running Linux in embedded projects is still super useful. You can use pretty advanced software like speech recognition (PocketSphinx, etc.), image processing (OpenCV), and more to make cool stuff that would be miserable/nearly impossible to implement bare metal on a fast CPU. Even networking heavy or UI heavy projects would be much easier on a machine that runs a real operating system.

Re: Introducing Raspberry Pi B+

#48
post #45

Earlier quoted context omitted.

My understanding is that the Raspberry Pis are intended to be used in education. The front page says: "We want to see it being used by kids all over the world to learn how computers work, how to manipulate the electronic world around them, and how to program." That said, I use mine as a simple NAS for backups.

The problem is that it's too slow to be used as an actual development computer, so you have to write your code on another computer and then copy it over to the pi.

Check out sshfs or similar user-mode filesystems to make the Pi look like a drive. Cyberduck is another tool that has a decent file explorer UI around SSH/SFTP and is cross platform.

If you're writing C/C++ you can set up a cross compilation tool chain to write and compile code on any Linux machine. It's a pain but there are lots of blogs posts and guides on it.

Re: Introducing Raspberry Pi B+

#49
post #33

What's the same: - Same Broadcom BCM2835 Chipset - Same 512MB RAM - Same full size HDMI port - Same 10/100 Ethernet port - Same CSI camera port and DSI display ports - Same micro USB power supply connection What has changed: - Now comes with 4 USB ports so you can now connect more devices than ever to your Raspberry Pi. - There is a 40pin extended GPIO so you can build even bigger and better projects than ever before…

Right now it's possible to back feed power with a powered hub instead of using the micro USB connection. I'd like to see the schematic to find out if that's still possible, but I can't find one yet.

This isn't a good idea though I've heard, don't you bypass some important components for power safety in the micro USB power circuit?
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