http://www.elinux.org/Beagleboard:BeagleBoneBlack#WIFI_Adapters
Gerald On Mon, May 5, 2014 at 1:18 PM, <[email protected]> wrote: > One problem I've seen with BeagleBone is that WiFi dongles seem to get > electrical interference problems when plugged directly into the > BeagleBone...using a USB extension cord seems to fix that. AFAIK, this > problem causes unreliability in all chipsets...so if you have it basically > working - but unreliable - then adding an extension cable might help. > After all, we're dealing with radio signals here - and antenna > interference is a big deal. Most uses of WiFi dongles are OUTSIDE the > metal case of a PC or laptop - where the metal helps to shield the antenna > from R/F junk being emitted by the computer chips...maybe just putting some > distance between the BeagleBone and the antenna helps. > > -- Steve > > > On Saturday, January 25, 2014 7:06:51 PM UTC-6, Harry May wrote: >> >> Thank you for all the information. >> >> This is my experience with reliable wifi. This took me 4 days and 4 >> night(mares): >> >> I had all kinds of problems. Maybe the most important is that the >> Micro-USB-Stick N150 (Netgear) does not work reliably. It was possible to >> setup a WiFi connection >> but it broke down all the time. >> The much more stable hardware is the stick described by Carl Johnson in >> his first post (the bigger size netgear stick using the ath9k_htc driver). >> >> I had no luck with Angstrom, the wifi stick was recognized and a dhcp >> request startet, but succeeded only 1 of 10 times. >> >> So I ended up with Ubuntu saucy: >> http://rcn-ee.net/deb/rootfs/saucy/ubuntu-13.10-console- >> armhf-2014-01-24.tar.xz >> and the instructions from this site: >> http://elinux.org/BeagleBoardUbuntu (Debian or Ubuntu is the same >> procedure) >> >> To setup the stick I modified /etc/network/interfaces: >> auto wlan0 >> iface wlan0 inet dhcp >> wpa-ssid "MYSSID" >> wpa-psk "MYPASSPHRASE" >> >> and the same for WLAN1 !!!! >> I found out that changing from one stick to another may switch from wlan0 >> to wlan1, even if you power off. >> >> And tested it according: >> http://embeddedprogrammer.blogspot.de/2013/01/beaglebone-using-usb-wifi- >> dongle-to.html >> as Carl already suggested. >> >> Everything worked fine, so I removed the LAN cable and rebooted the bone. >> >> Now comes the important thing: WAIT at least 2 to 3 minutes. >> It takes 2:30 minutes until the blue LED on the stick gets lit. >> For any reason I don't know: at a later time it booted MUCH faster. >> >> I checked my DHCP router when the bone requested the IP. >> Then it took some more time until I was able to SSH into the board via >> wifi. >> But after that time all went really nice. To test the wifi link I copied >> a 100MB file repeatedly until 100 GB were copied. >> All went well. >> My WLAN router can do 54Mbit, but iwconfig showed 15Mbit only. I have no >> idea why, but I am happy that all works well so 15M is good enough >> for all my needs. >> >> This setup needs 650 MB on my SD card. >> >> What I learned in these 4 night and days: >> * use ubuntu (not Angstrom) >> * use saucy (not raring, I did not get it working with raring) >> * never use these tiny N150 micro sticks. >> >> Harry >> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
