Archive for November 2011

Capacitance meter (Part 2)

Part 1, 2, 3, 4 Before getting further on with maths and code, let’s have a look to the electronics. The proposed circuit is as usual as simple as possible. However, care shall be taken with the choice of components. The resistor has a high ohmic value. If you cannot get a precision resistor, you will have to measure […]

Capacitance meter (Part 1)

Part 1, 2, 3, 4 Identifiying a capacitor is no big deal as long as the labelling is readable: Depending upon the package type, we will use some conversion formula, like: However, identiying a surface mount capacitor may be tricky! In this case a capitance meter is necessary. There are some available on the market, but why buy one […]

Bad news of the day

Arrgl! The hard disk drive from my good’ol Compaq (HP) NC6000 crashed. In fact, it was an upgrade disk (160 Gb) that I put in place of the original (tiny) 40 Gb disk. That happened after an extensive use of the disk caused by multiple backups during a severe maintenance on a web site+forum. It […]

Blog of the day

A must visit! Starlino blog, helps you staying modest 😉 Every body should enjoy the visit, discovering the simplest awasome tricks and the most sophisticated applications.

Picture of day

Who remembers about these memory boards? Core memory, where data is represented by the polarity of magnetization of a tiny toroid, is developed by Jay Forrester at MIT, providing an electronic technology for computer memory that is both reliable and fast. It is adopted by IBM and other manufacturers, and remains the main memory technology […]

Alternate IDE (Part 1)

Part 1, 2 ‘IDE‘ + something is one the most searched keywords on Arduinoos, while only two posts cover this subject. I may fulfill numerous visitors expectations with this new series of posts related to Arduino IDE. There is strictly no reason why I should cover the basic use of Arduino IDE, while it has […]

Application Note of the day

Arduino is fed by a single supply (actually +5 V DC) from which many simple interface circuits can be powered. While this is just fine for digital interfaces, it may be tricky when designing analog circuitry. Here is a very nicely written Application Note from TI, describing “A Single-Supply Op-Amp Circuit Collection”. This Application Note […]