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by Grey Whittney
Fri Jul 20, 2012 11:38 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: kernel patch for Dallas 1-wire interface
Replies: 227
Views: 161189

Re: kernel patch for Dallas 1-wire interface

I've been able to get a ds1820 running (and plugged into rrdtool for 5 min logging over crontab). The only issue I had was that I had to run the chip in non-parasitic mode. I couldn't get the true "1-wire" (ie. only data and Gnd needed) running, unlike my avr code. I'll double check over the weekend...
by Grey Whittney
Fri Jul 20, 2012 11:25 pm
Forum: HATs and other add-ons
Topic: Add-on tutorial
Replies: 9
Views: 2682

Re: Add-on tutorial

... PS, I had not followed the link you provided, but I see you are referring to the exact same level converter trick I did. and I'll admit, @mahjongg, when you look at the schematics of that circuit the transmit side is via the FET, and the receive side is... a resistor network.. just as you descr...
by Grey Whittney
Fri Jul 20, 2012 11:11 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: BlinkM + I2c working with little alterations
Replies: 9
Views: 6975

BlinkM + I2c working with little alterations

Not sure if this is really news for the hardware hackers, but thought to pass it along. I've been able to get a 3 leds in one package - BlinkM ( Main BlinkM Site ) running from the GPIO I2C bus pins, from 3.3 v without any level changes needed. I'm running rootfs of raspbian_wheezy with additions of...
by Grey Whittney
Fri Jul 20, 2012 8:43 pm
Forum: HATs and other add-ons
Topic: Add-on tutorial
Replies: 9
Views: 2682

Re: Add-on tutorial

@mahjongg You make a good point. I didn't want to wave the "it'll break" flag, sorry.. Granted, there are some electrical interfacing items you can do without complexity. I think I read somewhere that some conditions on current and voltage wont destroy the Pi, but could reduce it's life. Static disc...
by Grey Whittney
Fri Jul 20, 2012 5:49 pm
Forum: Raspbian
Topic: [SOLVED] pinging pi by hostname
Replies: 9
Views: 28841

Re: pinging pi by hostname

...The router then resolved the hostname (that I had set on the pi) to the correct IP address. (check it with the "hostname" command.) @jui-feng I've heard of some others seeing this with one of the images embedding the host PI's mac address in the network settings. (didn't occur to me, as I've res...
by Grey Whittney
Fri Jul 20, 2012 5:42 pm
Forum: HATs and other add-ons
Topic: Add-on tutorial
Replies: 9
Views: 2682

Re: Add-on tutorial

Have a look through: http://www.ladyada.net/learn/arduino/lesson3.html and: http://www.ladyada.net/learn/arduino/LEDs.html Yes, I know, it's not for the Pi, but might assist in some terms, and basics to follow along with the magazine (sorry, I haven't read it yet). and for this next bit, I don't mea...
by Grey Whittney
Fri Jul 20, 2012 5:18 pm
Forum: Raspbian
Topic: [SOLVED] pinging pi by hostname
Replies: 9
Views: 28841

Re: pinging pi by hostname

Ok, first thoughts: * Is [Edited..urgh, sorry] smbd and nmbd running on the pi? (via ps -ax) * Is the smb.conf file same as last install (apt-get shouldn't blow it out) * can you do \\pi-ip-address\share or even \\pi-ip-address * anything showing up in the samba log files? Sorry if you've been over ...
by Grey Whittney
Fri Jul 20, 2012 5:07 pm
Forum: Troubleshooting
Topic: No Internet Connection - Raspian
Replies: 5
Views: 2078

Re: No Internet Connection - Raspian

Hmm. Odd that your router knows about it, but then didn't give it the right details. What does the output of /sbin/ifconfig , "route -n" , and " cat /etc/resolv.conf" give you? raspberry-pi:~# /sbin/ifconfig eth0 Link encap:Ethernet HWaddr b8:27:eb:ba:3b:42 inet addr:192.168.2.140 Bcast:192.168.2.25...
by Grey Whittney
Fri Jul 20, 2012 3:43 pm
Forum: Raspbian
Topic: [SOLVED] pinging pi by hostname
Replies: 9
Views: 28841

Re: pinging pi by hostname

Hmmm.. I'd love to find out the code that made it work previously, as a Samba name isn't something that ping goes looking for. I wonder if windows 7 on seeing the system name adds it to its DNS client resolve. The Samba name is sent out by broadcast on the smb protocol, or then you try and make the ...
by Grey Whittney
Fri Jul 20, 2012 3:33 pm
Forum: Raspbian
Topic: How is everyone compiling the armhf code?
Replies: 6
Views: 14156

Re: How is everyone compiling the armhf code?

@Iori Branford; Thank you, thank you, thank you. I've been fighting with my Ubuntu box for cross compiling, and had issues with the rootfs not having /lib/ld-linux.so.3. I've been using the images from: http://www.linuxsystems.it/2012/06/raspbian-wheezy-armhf-raspberry-pi-minimal-image/ in my rootfs...

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