“Le socle interministériel de logiciels libres (SILL) est un ensemble de logiciels libres préconisés par l’État français en 2016, dans le cadre de la modernisation globale de ses systèmes d’informations (SI). Sa gouvernance est réalisée par le Premier ministre sous trois grands principes : L’approche de l’État privilégie l’efficacité globale, en dehors de tout dogmatisme, […]
Part 1, 2, 3, 4, 5 As a professional equipment, the TASCAM DR40-X recorder features XLR inputs. These are in fact combo inputs which are compatible with standard XLR connectors and 6.35 mm jack connectors . More important than the hardware, the electronics behind the connectors are very important. Most audio devices rely on unbalanced […]
Building a basic weather station today is simple and cheap thanks to specialized integrated circuits featuring temperature, humidity and pressure sensing. Up to now my favorite is the Bosh bme280; you may easily find it ready for use on small PCBs, easy to connect on any prototyping platform. Adafruit industries is selling a very convenient […]
I remember very well the 20th of July 1969… I was in a holiday camp and the director had the bright idea to get a portable TV set, to power it with the battery of his car and he managed to have as many kids as possible watching this event. At this time, I had […]
Data type is probably the first concern for any new programmer in c/c++. These language require in minimal knowledge about integers and floats (Check this thread). Although these data types look familiar to all educated people, the principle of significant figures, which should be the universal way of formatting data, is, most of the time, […]
This T&T explains how to check the accuracy of a Real Time Clock (RTC). Lets make it a little bit harder and say that you do not have access to the Internet… Checking a RTC requires a highly accurate reference time base which can be read from a radio signal. Starting from there, two options […]
Part 1 Writing code is awesome. Have you ever compared coding works to the work of the potter ? He starts with a piece of clay, shapes it , refines it up to the final object. None from its production is fully identical to an other. Same thoughts apply to the coding works: the language […]
I love these highly risky rescue operations ! They remind some blood icing situations and the immense joy of saving a bunch of critical bytes of data or restarting a critical equipment just in time. Any story to share here ?
For the first time since 1993, we welcomed the whole family at home ! Including my dear Mom, 87 years old, a tonic Grandma, now a Grand-Grandma for the third time who agreed to travel with the tribe for this event. She paid a visit to my secret lab and asked many many questions and […]
Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 The heating plate is made of two symmetric printed conductive layers ~1.5 Ohm each. As printed on the heating plate you may wire them for use with 12 V or 24 V power supplies. As we need to add an extra power supply the choice for a 24 V power supply is […]