enc28J60 and Arduino (2)
In this second post, I’m going to show you how to use a DHCP server to automatically configure network parameters.
enc28J60 and Arduino (1)
With the following post, I’m going to start a tutorial about how to use enc28j60 Ethernet controller with Arduino.
OHJ February 2012
The second issue of OpenHardware journal is available. In this issue, a long article about OpenHPSDR project and a deep comparison between manufacturers’ AppNotes and OpenHardware approach. As usual, the magazine is freely available in PDF format; enjoy your reading!
Windows 2008 – Error 0x8007010B on task execution
On Windows 2008, a scheduled task execution could fail with error code 0x8007010B: That error code means invalid “Start in” path: open task properties, click Actions tab and check if the path specified is valid and does not contains quotes. That field, unlike the Program/Script one, does not require quotes even if the path you enter includes blanks:
Websphere 6.1, password recovery
With Websphere, you can store passwords in config files in a crypted form. The encryption algorithm used is XOR, with a secret key. You can use the same java classes Wepshere internally use to manually crypt/decrypt a text string. Those classes are in ws_runtime.jar file, which you can find in Websphere installation path: Move to the folder where ws_runtime.jar…
SVG Dashboard
The following tutorial will show how you can create a web dashboard to graphically display data using the standard vectorial format SVG. Introduction I was looking for a way to show in a graphic form data coming from a feed on Pachube: I needed to create a dashboard available via web and without proprietary technologies (Flash…). I found this blogpost by…
Printrbot, a kickstarted 3d printer
Among many projects available on Internet to build your 3d printer, it’s very interesting Brook Drumm’s one, called Printrbot. Project’s peculiarity isn’t its design, intentionally kept simple to be cheap (about 500$) and affordable for all, but author’s choice to use KickStarter website to fund it. The incredible popularity this 3d printer gained made possible that – with…
Powershell, how to get parameters from a file
I wrote the following snippet when a friend asked me some help: he needed to execute a command several times, getting its parameters from a CSV (comma-separated values) file. the parameters.csv file contains the following informations: IP address username password Here’s the script: $file = Get-Content "C:\parameters.csv" foreach($row in $file) { $parameters = $row.Split(","); $ipaddress = $parameters[0]; $username…
Windows 2008 – Error 2147943712 during task creation
In a Windows 2008 server, when you confirm the creation of a new task, you may obtain the following error: An error has occurred for task <TaskName>. Error message: The following error was reported: 2147943712. This error message occurs when Windows was unable to store credentials (expecially the password) of the user who run the task; normally a security…
VMWare, Linux text terminals
In every Linux distro, if you’re using the grapical interface and you need to switch to text terminal, you have to press CTRL+ALT+Fx x usually from 1 to 6); while to switch back to the GUI the shortcut sequence is CTRL+ALT+F7. If you installed Linux in a virtual machine with VMWare as hypervisor, you probably noticed that the shortcut…