raspberry pi – Page 15 – Kev's Development Toolbox

March 10, 2016

Configuring a static IP for Raspbian/Debian Jessie

Looks like on Raspbian Jessie the way you configure a static IP has changed. You used to configure static IPs in /etc/network/interfaces, but on Jessie it looks like the file to edit is now /etc/dhcpcd.conf (per the comment at the top of the prior file).

Scroll to the end of the file and paste something like this, editing IPs to match your network:

interface eth0
static ip_address=192.168.1.xxx/24
static routers=192.168.1.xxx
static domain_name_servers=8.8.8.8, 8.8.4.4

Reboot, done.

February 3, 2016

How to reset your password on Raspbian

What not to do: reset your password before you change/setup your keyboard locale, use punctuation characters in your new password, and then change the locale. Yeah, that’s not going to work. Now I don’t know where some of the characters moved to 🙂

I’m going to leave this post right here for future reference.

Update 2/3/16: after I edit the cmdline.txt and booted to a shell, passwd gave me this error:

passwd: Authentication token manipulation error
passwd: password unchanged

Further down the post, this recommendation to remount / solved my issue:

mount -rw -o remount /

Then I did passwd and the change worked this time.

January 15, 2016

Next project: install F6BVP’s Packet Radio sd image for Raspberry Pi

Having spent probably far too many hours installing and configuring Direwolf and AX25 on a fresh Raspbian install, I guess it’s time to check this out – F6BVP’s prebuilt Raspberry Pi image that has everything installed and configured for you. Yes, I knew this existed a while back, but there’s nothing like doing it yourself to understand how it all works.

January 15, 2016

Packet Radio: sending unproto frames with Linpac (and other useful commands)

Thanks to David’s (KI6ZHD) reply to my post on the Linpac site, here’s a quick summary on setting up Linpac for unproto frames:

:unsrc yourcall

:undest "Yourname node1 node2 node-etc"

where node1 etc is your digipeater node list for routing your unproto packets between nodes that can hear each other.

:unproto the message

sends an unproto frame with the text specfied.

You can also open the F10 window and all text typed there gets sent as unproto frames.

unsrc and undest can be defined in the ~/Linpac/macros/init.mac file.