1. Home
  2. Electronics Design
  3. Ongoing Raspberry Pi problems

Ongoing Raspberry Pi problems

I still cannot seem to get the pi to boot. I have ordered a bundled precoded package. Supply voltage at the pin diagonals is 5.01 Using RCA video with speed 4 memory. Only the red LED lights.

Both of the present SD memory cards seem to have an awful lot of early zeros in the code. A modified hex dump looks like this...

ú¸=??=°¸==?Ø?Àû¾=|¿=¹=ó¤ê!==¾¾8u ?Æ?þþuóë´°»=|²??t? LÍê=|==ëþ===================================================== ================================================================ ================================================================ ================================================================ ================================================================ ========================================================i{====? = ¥= ===À==¥?Ö+ë=à==ð7=================================Uª ================================================================ ================================================================ ================================================================ ================================================================ ================================================================ ================================================================ ================================================================ ================================================================ ================================================================

The nulls have been replaced by = to not choke wordpad. Both SD cards seem identical in early code.

Is this normal pi wheezy code?

--
Many thanks, 

Don Lancaster                          voice phone: (928)428-4073 
Synergetics   3860 West First Street   Box 809 Thatcher, AZ 85552 
rss: http://www.tinaja.com/whtnu.xml   email: don@tinaja.com 

Please visit my GURU's LAIR web site at http://www.tinaja.com
Reply to
Don Lancaster
Loading thread data ...

Just return the bloody thing. Its obviously broken; other people pointed out the other leds should light up as well. Next time try it with the card that comes with it (or order a complete kit with pre-formatted SD card).

--
Failure does not prove something is impossible, failure simply 
indicates you are not using the right tools... 
nico@nctdevpuntnl (punt=.) 
--------------------------------------------------------------
Reply to
Nico Coesel

Knowing Lancaster, I'd guess he found it at a salvage yard ;-) ...Jim Thompson

--
| James E.Thompson, CTO                            |    mens     | 
| Analog Innovations, Inc.                         |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| Phoenix, Arizona  85048    Skype: Contacts Only  |             | 
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  | 
| E-mail Icon at http://www.analog-innovations.com |    1962     | 
              
I love to cook with wine.     Sometimes I even put it in the food.
Reply to
Jim Thompson

I got one with the OS on the SD card already. Plugged it into the HDMI port and it booted up the first time, no problems. Typed "startx" and I was in business, Internet connectivity and all.

How did you prepare your SD card? Did you use the Windows Imager utility?

Reply to
G. Morgan

I downloaded wheezy.zip in windows 8 in on and then drug and dropped it into the memory card.

The card showed nearly the full 2 gigs from the much shorter zip file and an .img trailer.

Doing this twice seemed to produce the same restult.

--
Many thanks, 

Don Lancaster                          voice phone: (928)428-4073 
Synergetics   3860 West First Street   Box 809 Thatcher, AZ 85552 
rss: http://www.tinaja.com/whtnu.xml   email: don@tinaja.com 

Please visit my GURU's LAIR web site at http://www.tinaja.com
Reply to
Don Lancaster

From the looks of it you need to get this utility to setup the boot sector on the sd card.

use the wheezy img file as the source. This creates the boot partition on the sd card. I'm assuming it?s a linux disk with multiple partitions, but I could be wrong.

Cheers

Reply to
Martin Riddle

that's not going to work

you need to overwrite the memory card with the img file dunno how to do that on ms-windows

--
?? 100% natural 

--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Reply to
Jasen Betts

The SD Card is Linux format. You have to use a special imaging tool to make one on a Windows PC.

Reply to
Andrew Holme

That's your problem, you didn't RTFM.

Watch this:

formatting link

Reply to
G. Morgan

Is it a clean 5.01 volts?

Reply to
Michael A. Terrell

You'll need an open DOS window for this approach.

You can use "dd" from here:

formatting link

dd copies the raw data from the img file to the device.

dd --list will show you the device IDs ; one will be for the memory card when it's plugged in.

The mount point for i: on this machine is

\\.\Volume{68c3864c-134e-11e0-ab8e-806e6f6e6963}\ link to \\?\Device\HarddiskVolume7 removeable media Mounted on \\.\i:

so you can refer to the device at I: as \\.\i:

--
Les Cargill
Reply to
Les Cargill

On Sun, 30 Dec 2012 21:21:19 -0700 in sci.electronics.design, Don Lancaster wrote,

Oh come on, now I know you are trolling or getting senile.

My TV Typewriter doesn't work. It was too much trouble to read the instructions so I just drugged and dropped all the parts into the box. Should I have taken them out of the plastic bag first?

Reply to
David Harmon

T24gTW9uLCAzMSBEZWMgMjAxMiAwOTo0NzozNSArMTAwMCwgRG9uIExhbmNhc3Rl ciA8ZG9uQHRpbmFqYS5jb20+IHdyb3RlOg0KDQo+DQo+IEkgc3RpbGwgY2Fubm90 IHNlZW0gdG8gZ2V0IHRoZSBwaSB0byBib290Lg0KPiBJIGhhdmUgb3JkZXJlZCBh IGJ1bmRsZWQgcHJlY29kZWQgcGFja2FnZS4NCj4gU3VwcGx5IHZvbHRhZ2UgYXQg dGhlIHBpbiBkaWFnb25hbHMgaXMgNS4wMQ0KPiBVc2luZyBSQ0EgdmlkZW8gd2l0 aCBzcGVlZCA0IG1lbW9yeS4gT25seQ0KPiB0aGUgcmVkIExFRCBsaWdodHMuDQo+ DQo+IEJvdGggb2YgdGhlIHByZXNlbnQgU0QgbWVtb3J5IGNhcmRzIHNlZW0gdG8g aGF2ZQ0KPiBhbiBhd2Z1bCBsb3Qgb2YgZWFybHkgemVyb3MgaW4gdGhlIGNvZGUu IEENCj4gbW9kaWZpZWQgaGV4IGR1bXAgbG9va3MgbGlrZSB0aGlzLi4uDQo+DQo+ IMO6wrg9JTEwxb3DkMK8PcKwwrg9PcW9w5jFvcOAw7vCvj18wr89JTA2wrk9JTAy w7PCpMOqISUwNj09wr7CviUwNzglMDR1JTBCxpLDhiUxMMKBw77DviUwN3XDs8Or JTE2wrQlMDLCsCUwMcK7PXzCsuKCrMWgdCUwMeKAuQ0KPiBMJTAyw40lMTPDqj18 PT3Dq8O+PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT0NCj4gPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQ0KPiA9PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09DQo+ID09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT0NCj4gPT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQ0KPiA9 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PWl7JTAxPT09PeKAmg0KPiAlMDM9JTBDwqUlMUUlMDc9ICANCj4gPT09 w4AlMDE9PcKlJTFGJTA3xpLDlivDqz3DoCUwMT09w7A3PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09VcKqDQo+ID09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0NCj4gPT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PQ0KPiA9PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09DQo+ID09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT0NCj4gPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PQ0KPiA9PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09DQo+ ID09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT0NCj4gPT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQ0KPiA9PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09DQo+DQo+IFRoZSBudWxscyBoYXZlIGJlZW4gcmVwbGFjZWQgYnkg PSB0byBub3QgY2hva2Ugd29yZHBhZC4NCj4gQm90aCBTRCBjYXJkcyBzZWVtIGlk ZW50aWNhbCBpbiBlYXJseSBjb2RlLg0KPg0KPg0KPiBJcyB0aGlzIG5vcm1hbCBw aSB3aGVlenkgY29kZT8NCj4NCj4NCj4NCg0KVGhlIGxhY2sgb2YgYW55IGFjdGl2 aXR5IG9uIHRoZSBTRCBMRUQgcmVhbGx5IHNvdW5kcyBsaWtlIHRoZSBQaSBpc24n dCAgDQp3b3JraW5nIGF0IGFsbC4=

Reply to
David Eather

ú¸=%10??=°¸==?Ø?Àû¾=|¿=%06¹=%02ó¤ê!%06==¾¾%078%04u%0B?Æ%10þþ%07uóë%16´%02°%01»=|²??t%01?

I found this particular problem. I was copying an .img file into the SD card rather than imaging an .img file into it. The needed image copy software is extremely dangerous.

The pi now boots but has monitor problems.

--
Many thanks, 

Don Lancaster                          voice phone: (928)428-4073 
Synergetics   3860 West First Street   Box 809 Thatcher, AZ 85552 
rss: http://www.tinaja.com/whtnu.xml   email: don@tinaja.com 

Please visit my GURU's LAIR web site at http://www.tinaja.com
Reply to
Don Lancaster

ú¸=%10??=°¸==?Ø?Àû¾=|¿=%06¹=%02ó¤ê!%06==¾¾%078%04u%0B?Æ%10þþ%07uóë%16´%02°%01»=|²??t%01?

The instructions on the Wiki (particularly) are concise, accurate and worked for me on the first try (re: imaging my own SD card).

It's like a sharp knife - also extremely dangerous when inexpertly used.

Check the forums:

formatting link

HTH Chris.

Reply to
Chris

Mine did at first too. You have to manually go in and set the screen resolution. I turned off "overscan" in config.txt and it worked fine.

formatting link

Reply to
G. Morgan

formatting link
Mr. G.Morgan has the right answers. The URL's he offers are good. add this one:

formatting link

It explains how to load the SD card from Linux or Windows so that it is bootable. It also

warns that using Word or Wordpad is likely to corrupt the load. The references at the

bottom of the page explain how this flavor of Linux is attached to the hardware. I have not

done it yet, but I will do it soon. I have some HDMI monitor issues to work out first.

A good early checkpoint is to lug the composite video to a TV set with a composite video input. make sure that the SD card is seated properly and plug the power in. Nothing happens for a few seconds and then the screen will start scrolling and it may do a restart. eventually, it will get to the login in point. Since there is no keyboard-mouse installed you cannot go further. Note that the video is nearly unreadable, but it does show that it will boot.

There is so much >>>

John Ferrell W8CCW

Reply to
John Ferrell

Heh! I wouldn't post bad information in this group, you guys are likely light years ahead of me in electronics design. I just post my own experience, no guessing. I would look like a fool against some of you if I went around guessing. ;-)

Reply to
G. Morgan

Theres's a section covering two linux GUI linux tools and a link to a command-line method

--
?? 100% natural 

--- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Reply to
Jasen Betts

As the others have pointed out, it seems that the media has not been set up correctly. The easy way to get "started" is just to buy the media already installed on it. Then learn how to get yo own media setup after you know it all works.

WRT power, if you are using a USB charger that barely meets the current requirements, the voltage may come up too slowly to allow a clean RESET of the SoC.

I've watched the voltage on an LG USB charger rated at

0.7 Amps come up to 5 volts over the course of a few seconds -- probably not good for a good RESET. A perky power source is required.

Warren.

Reply to
Warren

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.