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by hamjudo
Fri Mar 06, 2015 7:22 pm
Forum: Troubleshooting
Topic: Crash at hh:17:10 every day
Replies: 10
Views: 2374

Re: Crash at hh:17:10 every day

... it also "time jumps" before the crash according to syslog . Ex. today it went from: ... Mar 6 04:04:50 raspberrypi dhclient: bound to 192.168.0.150 -- renewal in 1679 seconds. Mar 6 03:17:10 raspberrypi kernel: imklog 5.8.11, log source = /proc/kmsg started. ... If the time jumps, ntpd isn't wo...
by hamjudo
Thu Apr 18, 2013 1:14 pm
Forum: General discussion
Topic: Supersized Pi Order for U.S. National Education Buy
Replies: 3
Views: 1265

Re: Supersized Pi Order for U.S. National Education Buy

What constitutes a large order? Obviously not my High School's FIRST Robotics team, as we're looking at maybe 10 more for next year. I've already got 2 students using them. I can order up to 10 of the Model A and up to 20 of B from Newark right now (I checked at 9AM EDT April 18).
by hamjudo
Mon Apr 15, 2013 10:43 pm
Forum: General discussion
Topic: Anywhere to get a Model A in US?
Replies: 11
Views: 2197

Re: Anywhere to get a Model A in US?

Newark is selling the Model A now. The Newark site has been showing 10 were available for sale for the last few hours. I assume they are only showing ten, as that is one way to limit orders to at most 10 at a time, until stock levels improve. http://www.newark.com/raspberry-pi/raspberry-moda-256m/mo...
by hamjudo
Fri Apr 05, 2013 10:30 pm
Forum: General discussion
Topic: Anywhere to get a Model A in US?
Replies: 11
Views: 2197

Re: Anywhere to get a Model A in US?

I ordered on Sunday, they arrived on Thursday. Shipping for two was just under $10, so my per Pi cost was slightly less than $30 each.

I saw that there were some more in stock on Thursday. I didn't see how long they lasted, but they're gone now.
by hamjudo
Sun Mar 31, 2013 5:16 pm
Forum: General discussion
Topic: Anywhere to get a Model A in US?
Replies: 11
Views: 2197

Re: Anywhere to get a Model A in US?

I saw an article this morning that said Allied has started carrying them.

Allied Electronics Stock Number 70266830.

There were 70 in stock as of late this morning (Eastern US Time). I ordered a couple. They have since sold out.

Looking forward to a pair of low power Pi's.
by hamjudo
Fri Jun 08, 2012 8:32 pm
Forum: General discussion
Topic: Quantity Orders (When)
Replies: 30
Views: 4882

Re: Quantity Orders (When)

This seems like a question for the distributors, so I asked it in the comment field in the Element14 registration of interest form. I will report back if I get an answer. I have witnessed a few cases of businesses catching up with demand, through the mathematical magic of exponential growth. Product...
by hamjudo
Mon Jun 04, 2012 4:41 pm
Forum: General discussion
Topic: A 5$ 1.5" LCD screen for all your projects !
Replies: 53
Views: 36007

Re: A 5$ 1.5

Sony made a clunky wrist mounted bluetooth display for use with Android Phones. They weren't ideal for their intended use, because they are a huge thing to wear on your wrist. So one of the one sale a day ebay vendors is unloading them at $19.99 each. The pre-purchase questions that come to mind are...
by hamjudo
Sun May 27, 2012 6:48 pm
Forum: General discussion
Topic: Anyone in the US get a ship date from Newark (Element/14)
Replies: 188
Views: 30848

Re: Anyone in the US get a ship date from Newark (Element/14

hamjudo wrote:After a few days at June 9th, my ship date has changed to May 29th. It now matches the "week of May 29th" from the email.
It was shipped on May 23rd, it arrived Friday May 25th.

It boots! I haven't done anything cool with it yet.
by hamjudo
Sun May 27, 2012 6:39 pm
Forum: Troubleshooting
Topic: Arch - Screen blank
Replies: 11
Views: 6044

Re: Arch - Screen blank

The composite port will be used instead of HDMI, so plug that into an old T.V. or whatever and do: mv /boot/config.txt config.txt.old When you reboot it'll use HDMI instead. That worked for me. Once it was booted, I used: export LD_LIBRARY_PATH=/opt/vc/lib: /opt/vc/bin/tvservice -m CEA /opt/vc/bin/...
by hamjudo
Thu May 24, 2012 5:34 pm
Forum: General discussion
Topic: A 5$ 1.5" LCD screen for all your projects !
Replies: 53
Views: 36007

Re: A 5$ 1.5

It is a USB device, so I can hang more than one of these off of a Pi. It also doesn't force me to unplug any other displays. I wouldn't use it as a replacement for an HDMI monitor, but it would be handy to display why my robot is refusing to move (E-stop, low battery, communication problem, sensor f...
by hamjudo
Fri May 18, 2012 4:49 pm
Forum: General discussion
Topic: Anyone in the US get a ship date from Newark (Element/14)
Replies: 188
Views: 30848

Re: Anyone in the US get a ship date from Newark (Element/14

After a few days at June 9th, my ship date has changed to May 29th. It now matches the "week of May 29th" from the email. So the two systems are in sync. This probably means it is actually near shipment. I also registered interest with RS, and got the order email yesterday. RS's order page said some...
by hamjudo
Wed May 16, 2012 8:59 pm
Forum: General discussion
Topic: Design flaw? Polyfuses for USB current limiting
Replies: 245
Views: 109335

Re: Design flaw? Polyfuses for USB current limiting

*If you want to use higher powered devices, use a powered hub, one that doesn't have the "feed current back" problem (or the user could cut the +5V line of the cable between the PI and the HUB, only that isn't a job for beginners). Even for the cheep hubs, the "feed current back" problem, can be ig...
by hamjudo
Tue May 15, 2012 10:24 pm
Forum: General discussion
Topic: Design flaw? Polyfuses for USB current limiting
Replies: 245
Views: 109335

Re: Design flaw? Polyfuses for USB current limiting

By the way, the LAN9512 chip used as the internal USB hub for the model-B does seem to have the ability to "see" that the polyfuses have triggered, and that there is -no- voltage on an USB port, what they don't seem to have is the ability to detect a lower than normal output voltage. I don't believ...
by hamjudo
Tue May 15, 2012 5:10 pm
Forum: General discussion
Topic: Design flaw? Polyfuses for USB current limiting
Replies: 245
Views: 109335

Re: Design flaw? Polyfuses for USB current limiting

@hamjudo I can well believe that many cheaper peripherals simply ignore the USB specs. If like you say the Pi does have the sense line/s connected then I wonder if it/they are actually being read and what use reading them would actually do if they are connected to USB power before the polyfuse in w...
by hamjudo
Tue May 15, 2012 4:48 pm
Forum: General discussion
Topic: Design flaw? Polyfuses for USB current limiting
Replies: 245
Views: 109335

Re: Design flaw? Polyfuses for USB current limiting

Getting back to something useful... If your USB device doesn't work, use a powered hub. Some folks have measured the cold resistance of the polyfuses on the host ports on their Pis. The highest reported in this thread so far was measured at 7.5 ohms. Assuming a barely in spec USB power supply provid...
by hamjudo
Tue May 15, 2012 4:34 pm
Forum: General discussion
Topic: Design flaw? Polyfuses for USB current limiting
Replies: 245
Views: 109335

Re: Design flaw? Polyfuses for USB current limiting

Errr, no. Read the USB specs and you will see that it calls for the current to be physically limited to 100mA to minimize spikes and dips caused by decoupling capacitors which the USB spec also sets at a maximum of 10uF unless in-rush current is otherwise limited on the peripheral. A USB1.1 complia...
by hamjudo
Mon May 14, 2012 10:01 pm
Forum: General discussion
Topic: Design flaw? Polyfuses for USB current limiting
Replies: 245
Views: 109335

Re: Design flaw? Polyfuses for USB current limiting

The design constraints that matter most are the ones that make the Pi affordable for students. To help students save money, the Foundation designed the system to run off of the nearly ubiquitous 700mA USB phone chargers, rather than force students to buy more powerful/expensive power supplies. The P...
by hamjudo
Fri May 11, 2012 4:46 pm
Forum: General discussion
Topic: Anyone in the US get a ship date from Newark (Element/14)
Replies: 188
Views: 30848

Re: Anyone in the US get a ship date from Newark (Element/14)

<r>hamjudo said: <br/> <br/> <br/> I got the email, it said "Week of May 29th". (Monday May 28, is a holiday in the United States.)<br/> <br/> It also said "Please Note: The delivery date reflected in your order history on <URL url="http://www.newark.com">http://www.newark.com</URL> will not update ...
by hamjudo
Wed May 02, 2012 11:11 pm
Forum: General discussion
Topic: Anyone in the US get a ship date from Newark (Element/14)
Replies: 188
Views: 30848

Re: Anyone in the US get a ship date from Newark (Element/14)

<r>I got the email, it said "Week of May 29th". (Monday May 28, is a holiday in the United States.)<br/> <br/> It also said "Please Note: The delivery date reflected in your order history on <URL url="http://www.newark.com">http://www.newark.com</URL> will not update until stock is received in our w...
by hamjudo
Wed May 02, 2012 7:27 pm
Forum: General discussion
Topic: What happened to the Model A?
Replies: 72
Views: 11874

Re: What happened to the Model A?

<t>My fantasy choice would be to find a 1080p LCD monitor with a reasonably powerful USB hub built in, at a reasonable price.<br/> <br/> I've looked. It seems that monitors with USB hubs cost on the order of $50 more than monitors without. Or perhaps, the ones with USB hubs don't get to the cheap pl...
by hamjudo
Fri Apr 27, 2012 9:40 pm
Forum: General discussion
Topic: Anyone in the US get a ship date from Newark (Element/14)
Replies: 188
Views: 30848

Re: Anyone in the US get a ship date from Newark (Element/14)

<t>rmm200 said: <br/> <br/> <br/> May as well add my info. Think I will be here awhile.<br/> <br/> Order 172630 placed early 1 Mar, 2012.  Expected ship date is 16 Aug 2012. Ship date has not changed in the last month. No EMails from Newark, although RS has been pretty good about inviting expression...
by hamjudo
Fri Apr 20, 2012 10:39 pm
Forum: General discussion
Topic: 350,000 RPis pre-ordered
Replies: 18
Views: 3530

Re: 350,000 RPis pre-ordered

<t>Gert said: <br/> <br/> <br/> Raspberry wino said: <br/> <br/> <br/> ....What would be a real shame would be near clones which aren't quite the same but are sold as compatible.<br/> <br/> <br/> Altough not imposible it would be very diffcult to make a near clone. After all 99% of everything is in ...
by hamjudo
Fri Apr 20, 2012 10:22 pm
Forum: Other projects
Topic: Emulate USB mass storage device
Replies: 13
Views: 36180

Re: Emulate USB mass storage device

<t>The model B has a built in 2 port USB hub, which does not know how to act as a USB device. The model A directly connects the processor USB interface, which can be configured either as a USB device or USB host.<br/> <br/> Obviously, that won't work until people have Model A's to develop on, and so...
by hamjudo
Thu Apr 19, 2012 11:46 am
Forum: HATs and other add-ons
Topic: simple 16 signal GPIO I2C board
Replies: 31
Views: 17817

Re: simple 16 signal GPIO I2C board

<t>Can you add other shipping options for shipping to the US?<br/> <br/> For 1 or 2 boards, the online store tells me that the cheapest shipping option, UPS Saver, is 55.99EUR.<br/> <br/> The datasheet shows the "Condition on delivery" as with some pins soldered on. If you leave off those pins, coul...
by hamjudo
Tue Apr 17, 2012 3:42 pm
Forum: General discussion
Topic: Anyone in the US get a ship date from Newark (Element/14)
Replies: 188
Views: 30848

Re: Anyone in the US get a ship date from Newark (Element/14)

<t>mkopack said:<br/> <br/> <br/> My order was placed at about 10am (eastern) on the 29th. The latest order of the two that were mentioned was about a 9am (eastern) order, and his Order Confirmation Number was about 3300 earlier than mine. Assuming those are the ones<br/> <br/> <br/> My order confir...

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