Tronixlabs LCD Backpack

For my Raspberry Pi GPS NTP server project I found it useful to have a display available to put up simple status messages for example the IP address and the output of ntpq.

To that end I purchased a Serial I2C backpack for HD44780-compatible LCD modules from Tronixlabs. Although they provide a tutorial for the use of these devices I had greater success with a different Python library. Read More...

FSCK instructions for Rasperry Pi

It is trivially easy to shut your Pi down incorrectly and it still seems that this has not been addressed well in the Raspberian repository. Here is a summary of http://www.raspberrypi.org/forums/viewtopic.php?t=64843 which describes how to fix the dreaded:

FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.

problem

Tronixlabs DS321 hardware clock config for Rasperberry Pi

For various reasons I need to make a Raspberry Pi into an NTP time server and for this to work I need time to be roughly right when it starts. hence we need to add an RTC to the Raspberry Pi running Raspberian.

Tronixlabs supplies a very nice module (http://tronixlabs.com/raspberry-pi/real-time-clock/ds321-real-time-clock-module-for-raspberry-pi/) but the instructions are a little less than optimal.