It turns out that the raspberry pi has hit another hardware snag, with a forum post outlining the issue here: Fixing 1.8V power rail design error Essentially, there is a 1.8v filter pin on the ethernet/usb chip that has actually ended up being connected to the 1.8v rail, this can cause the ethernet chip to supply power to the whole 1.8v rail instead of the linear regulator that is supposed to be doing the job, this in turn makes the ethernet run hot.
Not a complete show stopper but could certainly be compounding issues that are prevalent in the current usb drivers, current work on the usb drivers and possible fixes are being discussed here.
Unfortunately, the usb fixes have not fixed the issues I am having with my webcam, luckily I have the mini210S coming to experiment with.
Showing posts with label raspi. Show all posts
Showing posts with label raspi. Show all posts
Monday, 20 August 2012
Thursday, 9 August 2012
Mixed feelings...
As I mentioned in my intro, I have hacked/developed on the didj/df3120 arm boards, they are fantastic little units for cutting your teeth with hacking and linux development but sometimes you just want something that hasn't had it's pins purposed by someone else.
So recently I have been messing around with the raspberry pi, I have mixed feelings about the Pi, it's an arm11 clocked at 700Mhz default, 256MB ram with a custom broadcom gpu (opengl ES 2.0 3d).
It's definitely fulfilled the cheap niche, you can undoubtedly program on it so it fulfills the foundations aims. My pi board worked great right out of the box, my son's pi needed the crystal for the smsc ethernet/usb chip reflowing before the usb would work.
Power is finicky on the pi, you have to find the right combo of psu and powered usb hub, even then you may or may not get a specific usb device to work, experimentation is key. Don't get me wrong, I like the pi, I was aware of quite a few of the caveats before I purchased it, so some of these issues are to be expected and I have learnt a few things on the way but right now the specific project I wanted the pi for (apart from tinkering) has stalled, hence the mixed feelings. I really need to bite the bullet and look at a full blown arm dev board.
So recently I have been messing around with the raspberry pi, I have mixed feelings about the Pi, it's an arm11 clocked at 700Mhz default, 256MB ram with a custom broadcom gpu (opengl ES 2.0 3d).
It's definitely fulfilled the cheap niche, you can undoubtedly program on it so it fulfills the foundations aims. My pi board worked great right out of the box, my son's pi needed the crystal for the smsc ethernet/usb chip reflowing before the usb would work.
Power is finicky on the pi, you have to find the right combo of psu and powered usb hub, even then you may or may not get a specific usb device to work, experimentation is key. Don't get me wrong, I like the pi, I was aware of quite a few of the caveats before I purchased it, so some of these issues are to be expected and I have learnt a few things on the way but right now the specific project I wanted the pi for (apart from tinkering) has stalled, hence the mixed feelings. I really need to bite the bullet and look at a full blown arm dev board.
I guess I should intoduce myself?
Hi, My name is Reggie, I'll get the namebadge made up later if that's ok? I am a tinkerer/hacker with embedded devices (atmel and arm), this will be my space to document some of the stuff I mess around with. I have developed software for the leapfrog didj/explorer consoles, hacks with the parrot df3120 photoframe and more recently I have been messing around with the raspberry pi, I am currently looking at a mini210S but I'll talk more about all of those in future posts.
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