Antre du Tryphon

Reset Unity Top Menu Bar Widget Panel

June 20, 2016 · claude Ubuntu Unity

Sometimes, widget disappears from the Top Menu Bar Widget Panel of Unity. The Widget Panel can be reset using the following command:

Make Linux use the hardware clock set to local time

June 3, 2016 · claude Ubuntu Linux

Ubuntu sometimes assumes that the hardware clock of the computer is set to GMT. If the hardware clock is set to local time, set UTC=no in /etc/default/rcS.

Move and secure the MySQL data directory

May 28, 2016 · claude Ubuntu Linux MySQL

By default, the data directory of MySQL is /var/lib/mysql. This can be a security issue, especially on a laptop. If your home directory is encrypted, you can easily secure you MySQL data. Backup you data before using this information. Read the...

hwclock: ioctl(RTC_RD_TIME) to /dev/rtc to read the time failed: Invalid argument

May 1, 2016 · claude Raspberry PI ARPI600 Raspbian

This error occurred on Raspbian Jessie using an ARPI600. I was trying to set up the real-time clock. I could resolve the issue by running the following command: hwclock --systohc -D --noadjfile --utc after enabling it with the command echo pcf8563...

Extrusion Rail Customizable Fastener

March 27, 2016 · claude 3D Printing

The purpose of this bracket is to fasten an extrusion rail such as V-SLOT™ to a surface. For example, these are used to fasten the Customizable Linear Carriage Generator (http://www.thingiverse.com/thing:1411601) to the wooden base of the device. To...

Customizable Linear Carriage Generator

March 19, 2016 · claude 3D Printing

This set of files generate the printable parts needed to build a linear carriage. It can be heavily customized. The Libre Office Calc file is used to compute some key values needed to create the printable parts. Some resulting values have a variable...

Fix “The Update Information Is Outdated”

March 13, 2016 · claude Ubuntu Ubuntu 14.04 Ubuntu 15.04

Sometimes, the message "The Update Information Is Outdated" is displayed when you click on a red warning red icon in the status bar. It happened to me last week. This time, it was caused by a Google Chrome update that failed. First, open a terminal...

Parametric utility box

February 21, 2016 · claude 3D Printing

This object is a parametric utility box with a bracket to join them together either by their sides or fronts. Sample STL files have been provided, which yield a box of 75 mm in width, 40 mm in depth and 100 mm in height along with both joining...

Maximum Frequency of a ESP8266 - Revisited

November 27, 2015 · claude ESP8266 IoT Internet of Things

The ESP8266 can yield a 163 kHZ wave using the Arduino IDE and writing the code in C. The code used is:

Maximum Frequency an ESP8266 can yield

November 26, 2015 · claude ESP8266 NodeMCU IoT +1

An ESP8266 running NodeMCU can yield maximum frequency of 1.44 kHz with a duty cycle of 61%. The wave form is given below. The code used to perform this test is:

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