Go to advanced search

by manis404
Mon Jun 25, 2012 5:34 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 102650

Re: USB Port Current Boost

Ed_Racket

Posted updated, now with PICTURES. I show an external hdd and wlan working simultaneously. I hope the pcb traces will handle the current.(though I'd be surprised if they don't)

http://theiopage.blogspot.com/2012/06/i ... -host.html
by manis404
Sun Jun 24, 2012 8:05 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 102650

Re: USB Port Current Boost

I fixed the hotswap kernel panics by placing a 120uF capacitor between the usb power planes. That worked for me, but it should ideally be at least 220uF. I updated the post with a graph which could be helpful to understand the concept of "voltage droop". (NOT voltage drop - voltage droop is momentar...
by manis404
Sun Jun 17, 2012 7:52 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 102650

Re: USB Port Current Boost

Larry_Adlard, that was exactly what I was planning to do actually. Its way neater this way, nice mod. I didn't do it like that 'cause I had no spare wire around at the time.
by manis404
Sun Jun 17, 2012 5:48 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 102650

Re: USB Port Current Boost

Hi guys. I am updated the blog post on modding the fuses for the case of high current devices. I recommend that you take a look at the USB Spec whitepaper I linked in there. http://theiopage.blogspot.com/2012/06/increasing-raspberry-pis-usb-host.html Basically, for high-power devices, you'll need to...
by manis404
Mon May 07, 2012 8:14 pm
Forum: General discussion
Topic: Reverse engineering GPU drivers from other devices using the BCM2835
Replies: 15
Views: 4933

Re: Reverse engineering GPU drivers from other devices using the BCM2835

<t>Quoting JamesH: "...the blobs are specific to the device they are in, so you cannot use a blob from another device"<br/> <br/> What do you mean by 'device' here? The SoC? Or the actual phone/media player/tablet?<br/> <br/> To my understanding, the BCM2835 is an SoC that has an ARM1176JZF-S CPU an...
by manis404
Mon May 07, 2012 3:29 am
Forum: General discussion
Topic: Reverse engineering GPU drivers from other devices using the BCM2835
Replies: 15
Views: 4933

Re: Reverse engineering GPU drivers from other devices using the BCM2835

<t>@shirro: The black box analogy is accurate. At least some of the devices that use the bcm2835 should be running on linux/android. For such devices, I am *pretty sure* that reverse engineering will be very possible.<br/> <br/> @rmm200: A DSI driver would be definitely be useful...but I am *much* m...
by manis404
Mon May 07, 2012 2:37 am
Forum: General discussion
Topic: Reverse engineering GPU drivers from other devices using the BCM2835
Replies: 15
Views: 4933

Re: Reverse engineering GPU drivers from other devices using the BCM2835

<t>Is this actually possible? Or does broadcom 'physically' maims the SoC when it is shipped to device manufacturers. ('maims' here means disabling part of the chip eg. by setting fuses or something)<br/> <br/> Assuming this is possible, I think it would be helpful to build a list of all devices tha...
by manis404
Mon Apr 23, 2012 12:33 pm
Forum: Other projects
Topic: DEFINITE Raspi DSi screen list
Replies: 40
Views: 104902

Re: DEFINITE Raspi DSi screen list

Of course, making the actual driver takes precedence over finding displays. It would be useless to get displays if we can't even make the raspi TALK through the dsi interface.
by manis404
Mon Apr 23, 2012 12:30 pm
Forum: Other projects
Topic: DEFINITE Raspi DSi screen list
Replies: 40
Views: 104902

Re: DEFINITE Raspi DSi screen list

The problems with connectors can be solved by just making a breakout board which physically rearranges the individual pins of each side. No big deal, really. The most significant step is to actually find displays that accept DSI signals.
by manis404
Fri Jan 20, 2012 11:27 pm
Forum: Other projects
Topic: DEFINITE Raspi DSi screen list
Replies: 40
Views: 104902

Re: DEFINITE Raspi DSi screen list

<t>I am trying to build a list of screens that we could hook up on the DSI interface.<br/> <br/> Every thread I have seen, people want to do things via HDMI etc which I believe is not 100% appropriate for portable application of the RasPi.<br/> <br/> So, if anyone knows a DSI (cheap) DSI screen that...
by manis404
Wed Jan 04, 2012 11:04 pm
Forum: General discussion
Topic: Mind putting the 'faulty' boards up for sale?
Replies: 9
Views: 1981

Re: Mind putting the 'faulty' boards up for sale?

After watching that factory video, I'm pretty sure that I could do that fix myself. If you[the raspi team] chose to sell these early boards off, this post is just to say that I am very interested.

Keep up the good work,

M.
by manis404
Mon Jan 02, 2012 5:02 pm
Forum: Other projects
Topic: Programmer for uC's
Replies: 4
Views: 1674

Re: Programmer for uC's

If you want something like a standalone programmer the RasPi seems like the perfect match for that.

But for a USB programmer, there's a lot of micro controllers out there which can do the job.
by manis404
Mon Jan 02, 2012 4:59 pm
Forum: General discussion
Topic: Idea's and Uses
Replies: 19
Views: 5450

Re: Idea's and Uses

For the IP Cam streamer, you'll need to wait for them to release the gpu driver for h.264 encoding.

The rest look pretty easy to implement.
by manis404
Mon Jan 02, 2012 4:06 pm
Forum: Other projects
Topic: Raspberrypi Quadcopter?
Replies: 11
Views: 7279

Re: Raspberrypi Quadcopter?

There's no reason that makes the RasPi incapable of making an autonomous drone out of a Quadcopter.

I believe, though, the gertboard is overkill here. It would be nice if someone could design a RasPi 'shield' for that kind of application - with gyros, accelerometers  and stuff.

Go to advanced search