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by tekmanro
Wed Aug 07, 2013 11:00 pm
Forum: Other projects
Topic: Carputers
Replies: 4
Views: 1971

Re: Carputers

it looks like step-down dc-dc controller... I don't think it's that simple. For starters, a capacitor wouldn't be enough to supply sufficient power for the Pi to shutdown (unless it's a boatload of Farads), since the Pi can take several seconds to safely shutdown. It probably has a microcontroller ...
by tekmanro
Thu Aug 01, 2013 7:24 am
Forum: Other projects
Topic: Carputers
Replies: 4
Views: 1971

Re: Carputers

Is there an open source alternative I could try building on my own?

Just can't bring myself to spend $28 on the power supply when the entire computer cost $25 :roll:
by tekmanro
Wed Sep 12, 2012 6:27 am
Forum: HATs and other add-ons
Topic: NRF24L01 RF Transceiver
Replies: 252
Views: 137032

Re: NRF24L01 RF Transceiver

I had the same idea of using Raspberry PI as a sort of internet-connected "router" for several low-cost AVR-based devices/sensors all linked together with NRF24L01+ transceivers. I haven't received the hardware yet, but I did find this page that describes how to do it for the Beaglebone (similar boa...
by tekmanro
Mon Sep 03, 2012 5:14 pm
Forum: Graphics, sound and multimedia
Topic: webcam very low fps
Replies: 49
Views: 46618

Re: webcam very low fps

I'm curious how you got mjpg-streamer to compile on the Raspberry. It looks like it's a very outdated project that relies on v4l1, and wouldn't compile for me with v4l2 (even if I manually rename videodev2.h to videodev.h). Any help there would be appreciated.
by tekmanro
Mon Sep 03, 2012 7:07 am
Forum: General discussion
Topic: I made a Raspberry PI Laptop
Replies: 840
Views: 382303

Re: I made a Raspberry PI Laptop

Just wanted to let you know that the Atrix is on sale again for $50 shipped at 1saleaday.com (flash daily deal). I'm not affiliated with that site, but that's where I got my Atrix and it seems to be an awfully good price for it; it arrived new in sealed box, in about 2 weeks. :geek:
by tekmanro
Sun Aug 26, 2012 4:34 am
Forum: Graphics, sound and multimedia
Topic: Webcam / ffmpeg on Raspbian
Replies: 18
Views: 17119

Re: Webcam / ffmpeg on Raspbian

What resolution / framerate are you getting now?
by tekmanro
Sat Aug 25, 2012 5:36 pm
Forum: Troubleshooting
Topic: Unload smsc95xx
Replies: 6
Views: 5059

Re: Unload smsc95xx

I'm getting an error message when running the unbind command:

Code: Select all

-bash: /sys/bus/usb/drivers/smsc95xx/unbind: Permission denied
I tried running it with sudo and without with the same result. Any tips?

Thanks!
by tekmanro
Sat Aug 18, 2012 11:50 pm
Forum: General discussion
Topic: I made a Raspberry PI Laptop
Replies: 840
Views: 382303

Re: I made a Raspberry PI Laptop

Hi, I just received my Raspberry Pi and Lapdock and I'm having trouble making it work. If I just power the Pi from my computer USB port, it boots up, but when I plug it into the micro USB on the lapdock's hinge it doesn't. I also measured the voltage there and I'm never getting any (with the lapdoc...
by tekmanro
Sat Aug 11, 2012 4:39 pm
Forum: General discussion
Topic: I made a Raspberry PI Laptop
Replies: 840
Views: 382303

Re: I made a Raspberry PI Laptop

Hi, I just received my Raspberry Pi and Lapdock and I'm having trouble making it work. If I just power the Pi from my computer USB port, it boots up, but when I plug it into the micro USB on the lapdock's hinge it doesn't. I also measured the voltage there and I'm never getting any (with the lapdock...
by tekmanro
Sat Jul 28, 2012 7:04 pm
Forum: Off topic discussion
Topic: Win95 on real Raspi
Replies: 281
Views: 84432

Re: Win95 on real Raspi

Hi Dietmar, Just wanted to tell you that I'm following this thread and I appreciate your updates. I'm still waiting for my Pi to arrive, but I'd love to try out your optimized QEMU on it (thinking about running a stripped down version of Windows 2000 - which is the oldest OS available on the NT kern...
by tekmanro
Tue Jul 24, 2012 11:34 pm
Forum: General discussion
Topic: video surveillance (USB webcam, IP cam...) enough power?
Replies: 17
Views: 57464

Re: video surveillance (USB webcam, IP cam...) enough power?

For streaming, what resolution are you getting (does it do 720p 30fps, or is it more like 640x480 10fps), and what codec are you using (H264, Mpeg4, or something more mundane like MJPEG)?

Thanks!
by tekmanro
Tue Jul 24, 2012 11:22 pm
Forum: General discussion
Topic: I made a Raspberry PI Laptop
Replies: 840
Views: 382303

Re: I made a Raspberry PI Laptop

I just ordered a Raspberry Pi and managed to snag a new discounted Lapdock for $49. Looking forward to getting this set up; thanks for compiling all this information, it'll sure come in handy. I'm wondering how feasible it is to install a touch digitizer on top of the Lapdock screen. Perhaps somethi...
by tekmanro
Wed Jul 18, 2012 2:05 am
Forum: Advanced users
Topic: Right way to compile libx264
Replies: 10
Views: 7837

Re: Right way to compile libx264

Hmm, I guess I should have rephrased that. What is the maximum resolution I can use to real-time encode a video stream from a web camera?

I assume software only, since the hardware encoder is not currently enabled due to licensing issues.
by tekmanro
Tue Jul 17, 2012 9:58 pm
Forum: Advanced users
Topic: Right way to compile libx264
Replies: 10
Views: 7837

Re: Right way to compile libx264

Hi,

I was wondering if you got this working, what are the perf characteristics of the software x264 encode? How far can you go in terms of resolution / fps? I suspect full 1080p/30fps is out of the question on 700Mhz, but what about 720p?

Thanks!

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