We make a device that allows GPRS connectivity via the USB port of any PC or USB host device. Internet connectivity via mobile phone network is now an extremely widespread reality and many of us use it in a transparent and unconscious way using common objects such as tablets and smartphones. However, this is…
We analyze the software of the project and the user interface, which is an App developed with Android Studio. A well defined message map determines how app and firmware should exchange information. Second and last episode. In the previous post we have described how to configure and assemble in a few steps the hardware of…
As the hot season comes closer, the problem of watering the lawn in the garden or the plants on the balcony or terrace arises again. For the management of small and medium systems, there are many commercial solutions, but these are often systems that have been in use for years, which are struggling to…
Complete charger in breakout board format based on the integrated BQ76920, capable of managing 3 to 5 cells. The charging of lithium batteries, whether common Li-ion, LiPo or LiFePO4, requires particular precautions that make it more difficult and delicate than it is in accumulators such as lead batteries (for which it is enough…
Let’s discover the programming environment that facilitates interaction between software and electronic devices. Electronics and IT have many things in common, we just need to know that the latter would not exist without the former. So yet, we tend to consider IT as a world apart and for this reason, we often do not…
A flower pot with a technological flowerpot dish that, when a person comes near, produces a colour-changing, rotating light which varies based on the humidity of the ground and therefore on the plant’s need to be watered. How many things can we do with Arduino? Since it first appeared on magazines and on…
If you’d like to build your own vaguely humanoid robot, but don’t care about it getting around, then look no further than Aster. The 3D-printed bot is controlled by an Arduino Uno, with a servo shield to actuate its 16 servo motors. This enables it to move its arms quite dramatically as seen in the…
Made of interlocking plexiglass, it is illuminated by a Neopixel strip operated by Fishino Guppy that we control with a smartphone via a Telegram bot. This year the Christmas tree lights are controlled with Telegram! In this slogan, we could summarize the project described in these pages, which like every year is on a Christmas…
We built a small musical instrument that will delight children and will allow them to play 8 notes and shift their frequency as desired using a potentiometer. Projects like the laser harp published in the previous post have accustomed us to seeing challenging circuits based on synthesizers and microcontrollers to produce musical notes, yet…
We make a NeoPixel light installations using Fishino and NodeMCU, controlled via Wi-Fi from PC or Raspberry Pi through a Python library. A few years ago, the American Adafruit Industries revolutionized the LED market by introducing its NeoPixels, whose main feature is to integrate, in a single package, an RGB LED and its controller….
Let’s make a Dashboard for the gateway Antennino network, using open-source software that allows us to implement a control panel for our wireless devices. We left, at the end of the first episode after describing the hardware of the new Gateway for Antenninos, based on the powerful NodeMCU ESP 32, and introducing the…
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