Home Data Center – update video

Here’s an update video of my home Data Center

Enjoy!

PIC 18F – I2C LCD display using a PCF8574

Display on 2 LCD, using 2 PCF8574 and a PIC 18F4620

See how to display on 2 Hitachi HD44780 with PCF8574 using the I2C protocol.

Read the article

Expand a PIC IO’s with a 8255A

See how to add 64 new IO’s to a PIC using 3 8255A

Download the Proteus project

Read the article

Watch the dog watch the watchdog

What’s wrong with this picture?

Here, we have a classic example of a PIC being reset by its watchdog timer.

The PIC used in the simulation – 16F866 – has a default watchdog countdown timer of about 2.3 seconds.

So, the count from 0 to 9 is interrupted before the end of the sequence and the program is restarted.

In the following article, we will see how to configure and use a watchdog on a PIC micro-controller.

Read the article

Introduction à Xcode et swift

Voici un laboratoire d’introduction à Xcode et swift que j’ai rédigé pour mes étudiants:

Proteus USART simulation on a PIC 18F4550

Using Proteus, this project demonstrates how to use the 18F4550 USART to receive and transmit characters and display them on a LCD.

The Proteus project and source code are available at the end of the article.

Read here

A new DL380 G7 in the data center

6 months ago, I have added to my data center a new HP DL380 G7 server.

A superb machine with 2x 6 cores CPU which gives 24 virtual cores, 32GB of DDR3 RAM and 6x SAS 10k 300gb disk .

Soon, I will move the Asterisk and pfSense vmware machines to this server, in addition to some experimental virtual machines : Windows 10, centos and OpenStack.

To be continued …

Apollo Guidance Computer

One of my favorite projects:

Reconstruction of the ‘Apollo Guidance Computer’.

John Pultorak did an extraordinary job.

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Un de mes projets préférés:

Reconstitution du ‘Apollo Guidance Computer’.

John Pultorak a fait un travail extraordinaire.

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Documents:

build_agc_1
build_agc_2
build_agc_3
build_agc_4
build_agc_5
build_agc_6
build_agc_7
build_agc_8
build_agc_9

PIC 18F – Exemple pour afficher sur LCD avec plib/xlcd.h

Sample code that displays on a LCD using the xlcd XC8 library

Note: The internal clock is used with the default clock rate of 1 MHz.

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Voici un exemple de code qui permet d’afficher sur un LCD en utilisant la librairie xlcd sous xc8

Note: L’horloge interne est utilisée avec la cadence par défaut (1 Mhz).

Directives de connexions

Référence LCD read more …

Home Datacenter – Update

A little job of renovation and reorganization of the datacenter during the summer vacations.