Archive for the ‘Uncategorized’ Category

HC-05 Bluetooth module (Part 2)

Part 1, 2 Once the hardware is under control, let’s focus on the software. By default, the HC-05 modules are configured in slave mode and they are discoverable by any master and consequently linkable by any master (eg. A PC, a smartphone or an HC-05 module configured as master). This configuration is obviously the easiest […]

HC-05 Bluetooth module (Part 3)

Part 1, 2, 3 Now that we have the hardware and that we understand the fundamentals of module programming, let’s build a simple network. In this example, we will use a master and a slave module, each of them plugged onto a “basic platform” (see part 1). The slave module shall be configured using the […]

Blog of the day

While tumbling through the net, I mean through the jungle of publications, I found the oasis of the maker ! I like very much the look and feel of Last Minute Engineers web site: nice pictures, well explained and documented topics. Pinouts and code samples will help you learning by doing. One can be fed […]

3D PRINTING (PART 15)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 First serious failure…After exactly 4 years of regular use, I experienced the first failure which is due to an aged component. Although Peek is a very strong material, it did not sustain any longer the thermal strength which it endured for years. This critical part is responsible for guiding the “cold” […]

HC-05 Bluetooth module (Part 1)

Many web pages, posts and topics can be found on the web, however it took me quite some time to gather enough information to have a clear picture about the HC-0x series Bluetooth modules. Although they are outdated by low power BT modules, these modules are still a product of choice for building amazing applications […]

100 !

This picture illustrates my production of facial masks frames of the Easter week-end!I never produced that many parts of the same sort using my brave old Vertex printer. So far, I experienced only 2 failures:– 1 part was poorly printed showing gaps and lacks of filament. This problem did occur any more after a careful […]

By all means

By all means let’s stop the covid-19! The heroes are those who stay home, in small flats, with nervous kids, noisy neighbors, low stocks of toilet paper and plenty kindness through the networks. The action men and women keep the ball rolling, feed us, power our phones and care about us. They deserve as much […]

Light sensor (Part 1)

Part 1, 2 Sensing light is probably one of the most common sensing and probably one of the simplest measurement to start with. Light sensors are used to detect light or brightness in a manner similar to the human eye. They are most commonly found in industrial lighting, consumer electronics, and automotive systems, where they […]

Date and time serial: how to bypass the lack of precision of floats

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, […]

Code documentation (Part 1)

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 […]