It allows us to detect the presence and passage of an object thanks to the combination of a laser diode which emits a light ray and a phototransistor which detects reflected light. Robotics applications and industrial control systems normally make use of optical systems in order to detect proximity and passing of objects,…
It measures solar radiation and visualizes the corresponding value on the integrated display of a miniaturized Arduino, in order to tell us when to expose ourselves to the sun… Summer is just around the corner and whether you choose the seaside or the mountains for your holidays, there is no doubt that most of…
Designed for small amplified audio speakers or as output stage for MP3 players, radio receivers or compact hi-fi systems; it is based on a class D integrated circuit which, thanks to the high efficiency, is ideal for battery-powered solutions. Small power amplifiers for battery-powered audio devices must satisfy two requisites, which are essentially…
Let’s call back an electronic version of one of the most famous casino games: no tricks and no cheats… The “roulette” is without a doubt one of the most famous and practiced casino games in the word, and it is surely one of the most widely employed, along with poker, in famous movies from…
A control unit for the garden sprinkler that can be controlled via web and smartphone thanks to Arduino Yún. With summer approaching, our plants and our gardens need some regular watering in order to stay lush and green as we like them. It’s not easy to always remember to water plants and gardens…
You already had the chance to see – and we hope, to try – our modular system for RGB LED matrix displays: LED Matrix (that’s the name) is a solution based on RGB LED matrices, that may be easily acquired (and at an affordable price) since they were born in the Maker world. We…
Our prototyping board acquires a 32-bit processor and sets the bar high, towards demanding applications that may take full advantage of the WiFi support, of the RTC and of the SD-Card, that make Fishino stand out from the common Arduino UNO. Second installment. In a previous post you met our new and powerful…
Let’s test out the capabilities of the DFR0299 audio player module, an ideal choice for Arduino but also for many stand-alone applications. In this article, we decided to design and propose a demoboard for the DFR0299 module we already used in the ‘Presepino’ project; this module will function as a development platform for…
A dot matrix RGB LED graphic panel, managed by an FPGA-based controller board presented in a previous post that may be separately used as a demoboard. Let’s see the software and how to use it in practice. Second and final installment. Composing even big size displays is now easier, and affordable for all budgets….
A dot matrix RGB LED graphic panel, managed by a FPGA-based controller board that may be separately used as a demoboard, so to evaluate the potential of the on-board Spartan 6. First installment. In this post you will find the description of a graphic display that uses a modular solution based on dot matrix…
Let’s discover the potential of the instant messaging app, Telegram, by creating a remote control, based on a smartphone and a WiFi powered demoboard. We may say that, when we have our smartphone in our hands, we have a door opened to the world. This is not just because of the global connectivity (mobile…
Create filaments for FDM printing of your choice, by yourself, thanks to this self buildable machine that gives new life to PLA, ABS and PET leftovers. Even if their price decisively fell in the last years, the precious filaments that we use in order to print 3D items via our 3Drag (and its…
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