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by gragib
Sun Aug 18, 2013 1:43 pm
Forum: General discussion
Topic: The one feature needed for future RasPii
Replies: 52
Views: 9020

Re: The one feature needed for future RasPii

Is it really asking too much to just type

Code: Select all

sudo poweroff
in a terminal?
by gragib
Sun Aug 18, 2013 1:38 pm
Forum: General discussion
Topic: Ammeter
Replies: 59
Views: 17887

Re: Ammeter

This should be a good starting point.

Also check out what others have done to build an ammeter using Arduinos and see if you can adapt their work.
by gragib
Mon Aug 12, 2013 5:23 pm
Forum: General discussion
Topic: reading/writing flash nand with a pi ?
Replies: 6
Views: 4382

Re: reading/writing flash nand with a pi ?

I've heard of the Bus Pirate. I may get one if I can find where I stored that Toshiba CMOS camera sensor. What could go wrong? :P
by gragib
Mon Aug 12, 2013 1:06 am
Forum: General discussion
Topic: Need help with power supply
Replies: 3
Views: 531

Re: Need help with power supply

Keep it simple. Put all USB accessories on a powered USB hub and get a separate USB charger for the Raspberry Pi. I recommend the following USB chargers: Nokia or Blackberry fast chargers Nexus 7 charger iPad charger (not the less expensive iPhone charger) (the ones made by Apple, not third-party ch...
by gragib
Mon Aug 12, 2013 12:57 am
Forum: General discussion
Topic: Difference between SDHC cards?
Replies: 11
Views: 1533

Re: Difference between SDHC cards?

Most SD cards are benchmarked for use in cameras, where the I/O is more or less sequential. On the Raspberry Pi, there is going to be much more random I/O. There's no hard-and-fast science behind random I/O performance of SD cards. Some cards perform well under random I/O, and others are abysmal, ev...
by gragib
Mon Aug 12, 2013 12:31 am
Forum: General discussion
Topic: reading/writing flash nand with a pi ?
Replies: 6
Views: 4382

Re: reading/writing flash nand with a pi ?

Actually, it's an exotic bus interface. serial-type memory device which utilizes the I/O pins for both address and data input/output as well as for command inputs. You could try using it over GPIO, but good luck with that. I had a CMOS camera module (also from Toshiba) with a similarly exotic interf...
by gragib
Sun Aug 11, 2013 11:24 pm
Forum: General discussion
Topic: Allied Electronics - hidden postage charges
Replies: 21
Views: 6523

Re: Allied Electronics - hidden postage charges

I once had a summer job as a shipper/receiver at a warehouse and came to know exactly how shipping charges are calculated. Never ever sign off on a order with ambiguous shipping charges. Always demand to know the exact shipping charges that will be applied to your order before providing your billing...
by gragib
Sun Aug 11, 2013 11:10 pm
Forum: General discussion
Topic: route airplay audio via Pi to multiple devices
Replies: 47
Views: 51392

Re: route airplay audio via Pi to multiple devices

Does forked-daapd really support simulcasting to multiple AirPlay speakers?
by gragib
Sun Aug 11, 2013 10:16 pm
Forum: General discussion
Topic: reading/writing flash nand with a pi ?
Replies: 6
Views: 4382

Re: reading/writing flash nand with a pi ?

May be. What interface does the flash NAND use? I2C? SPI? Something exotic?
by gragib
Sun Aug 11, 2013 10:12 pm
Forum: General discussion
Topic: Raspberry PI newbie questions
Replies: 1
Views: 655

Re: Raspberry PI newbie questions

The USB/ethernet implementation on the Raspberry Pi leaves much to be desired. I wouldn't recommend capturing 720p video over USB and retransmitting that over ethernet that happens to reside on the same USB bus. The maximum length of USB cables as per the specifications is 5 metres, which probably e...
by gragib
Sun Aug 11, 2013 9:57 pm
Forum: General discussion
Topic: Allied Electronics - hidden postage charges
Replies: 21
Views: 6523

Re: Allied Electronics - hidden postage charges

Read about dimensional weight - the one reason I hate shipping anything unless it is dense, or fits in a bubble envelope (without looking like a box in bubble wrap).
by gragib
Sun Aug 11, 2013 9:45 pm
Forum: General discussion
Topic: PI as client mode and access point ?
Replies: 2
Views: 1072

Re: PI as client mode and access point ?

It's up to the chipset in the WiFi module to operate as client and AP simultaneously. That's usually not an advertised feature, so you'll have to dig deeper to find out if you module supports it.

I'd save the headache and stick 2 WiFi modules into a powered USB hub.
by gragib
Sun Aug 11, 2013 9:22 pm
Forum: General discussion
Topic: route airplay audio via Pi to multiple devices
Replies: 47
Views: 51392

Re: route airplay audio via Pi to multiple devices

Does AirPlay allow streaming audio from 1 source to multiple AirPlay-enabled speakers simultaneously? I haven't had an iDevice is 2-3 years so I can't investigate that myself.
by gragib
Sun Aug 11, 2013 8:30 pm
Forum: General discussion
Topic: DC-DC Voltage Regulation
Replies: 13
Views: 3823

Re: DC-DC Voltage Regulation

There's this one. It takes 6.5V - 32V but it maxes out at 1A. May be you can split the power plane for the peripherals into 3 or more power planes.
by gragib
Sun Aug 11, 2013 8:14 pm
Forum: General discussion
Topic: [CLOSED] UHS/CL10 SD speed on Pi ?
Replies: 8
Views: 25113

Re: UHS/CL10 SD speed on Pi ?

The 64GB card is most likely an SDXC card. IIRC, the Raspberry Pi only supports SD and SDHC, not SDXC.

If you need more than 32GB storage, your only option may be to boot from a USB flash drive or USB HDD.

Then again you may want to read this.
by gragib
Sun Aug 11, 2013 7:56 pm
Forum: General discussion
Topic: route airplay audio via Pi to multiple devices
Replies: 47
Views: 51392

Re: route airplay audio via Pi to multiple devices

Take a look at Squeezeplay here, here and here.

It's not AirPlay, but another protocol for wireless audio streaming. See if it suits your purpose.
by gragib
Sun Aug 11, 2013 1:21 pm
Forum: General discussion
Topic: Drive an alphanumeric digit LED
Replies: 8
Views: 1927

Re: Drive an alphanumeric digit LED

You can use an LED controller chip (I'm not familiar with any 14-seg controllers; I mostly work with 8-seg displays) or daisy-chain some '595 shift registers.
by gragib
Mon Jan 28, 2013 10:12 pm
Forum: General discussion
Topic: Up and running with Node.js and Cloud9 IDE (updated)
Replies: 10
Views: 4661

Re: Up and running with Node.js and Cloud9 IDE (updated)

Ah soft-float/armel! IIRC the node.js binaries are hard-float/armhf. You can either switch to an armhf kernel or compile node.js yourself (takes 2-3 hours).
by gragib
Mon Jan 28, 2013 9:01 pm
Forum: General discussion
Topic: Help with getting started
Replies: 4
Views: 624

Re: Help with getting started

Step 1 is to check if the image copied successfully to the SD card. Insert the SD card into your Mac and see if the boot partition mounts in Finder. It is a FAT32 partition, so your Mac should be able to see it. Also, the Raspberry Pi is very very picky about SD cards. I have a 4GB SD card that came...
by gragib
Mon Jan 28, 2013 8:48 pm
Forum: General discussion
Topic: Up and running with Node.js and Cloud9 IDE (updated)
Replies: 10
Views: 4661

Re: Up and running with Node.js and Cloud9 IDE (updated)

When I get the following line sudo apt-get -y install build-essential openssl libssl-dev pkg-config && sudo npm install -g sm Npm dies with the following error . "/usr/local/bin/npm: 2: exec: /usr/local/bin/node: not found" I've tried using both the v0.8.17 & v0.8.18 binaries, both cause the same i...
by gragib
Sun Jan 20, 2013 4:04 pm
Forum: General discussion
Topic: Up and running with Node.js and Cloud9 IDE (updated)
Replies: 10
Views: 4661

Re: Up and running with Node.js and Cloud9 IDE (updated)

Strange. Do

Code: Select all

sudo apt-get -y install libxml2-dev
and try again.
by gragib
Sun Jan 20, 2013 2:33 pm
Forum: General discussion
Topic: Up and running with Node.js and Cloud9 IDE (updated)
Replies: 10
Views: 4661

Re: Up and running with Node.js and Cloud9 IDE (updated)

after: >cd libxml && git checkout v0.0.7 && git submodule init && git submodule update >nano support/o3/wscript >Delete the -msse2 options >sudo npm install i get the error: >npm WARN cannot run in wd [email protected].0.7 ./build.sh (wd=/home/pi/cloud9/node_modules/libxml) but npm install goes wtihout erro...
by gragib
Sat Jan 19, 2013 7:11 pm
Forum: Troubleshooting
Topic: No sound or internet
Replies: 17
Views: 2232

Re: No sound or internet

Which network adapter has IP address 192.168.0.1?

Could you open Command Prompt on your Windows machine, run

Code: Select all

ipconfig /all > ip.txt
and post ip.txt here?
by gragib
Sat Jan 19, 2013 4:14 pm
Forum: Troubleshooting
Topic: No sound or internet
Replies: 17
Views: 2232

Re: No sound or internet

To get ICS working, set the Raspberry Pi to get dynamic IP address, not static IP address. To keep things simple, do the same for the WiFi and LAN connections on your Windows machine. When enabling ICS, you may get a Windows error message saying you can't enable ICS right now. The simple solution is...
by gragib
Sat Jan 19, 2013 1:40 pm
Forum: General discussion
Topic: GPIO access methods
Replies: 3
Views: 1012

Re: GPIO access methods

Have you taken a look at WiringPi?

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