Today’s project, as always based on the enc28j60 ethernet controller, allows to toggle relays (or, generally, digital PINs) using a responsive web page, that is a page that automatically adapts its layout to devices with different screen sizes (for example your smartphone and your PC). Video presentation Web site The web site, stored on an SD card and…
If you updated the Arduino IDE to the latest version (1.6.3), you may have noticed a great improvement: a new tool for library management. In past indeed there was no a single place where you may found almost all the available libraries and the installation process was not so easy… with the new IDE instead if…
In my previous tutorial you learned how a sketch, running on the Arduino Yun’s ATMega chip, can execute processes (commands, scripts…) on Linino thanks to the Bridge library. In this tutorial you’ll learn how to do the opposite: send commands from Linino to the sketch that runs on the microcontroller. YunServer & YunClient In my sketch I’ll use two objects from the Bridge library: [checklist] YunServer,…
This tutorial will explain a way to communicate between the sketch running on the ATMega and the Linino (Linux) OS running on the Yun’s SoC: the ability to execute Linux processes from a sketch. I’m going to build a simple SMS alarm: A microswitch is connected to the Arduino when the microswitch is pressed, an SMS is sent using Skebby gateway…
Piccolo is an opensource project, by Diatom Studio, that consists of a small CNC bot (working area about 5x5cm); the official site is http://www.piccolo.cc. I built one unit; the required components are: [checklist] the frame, laser cut by Vectorealism 3 micro servos, brought from HobbyKing screws, nuts… the PCB (manufactured by SeeedStudio) and one Arduino Pro Micro from SparkFun [/checklist] the…
Some time ago, I published my AmbientMonitor project: a thermometer and hygrometer based on Arduino and an AJAX web interface. To connect Arduino to the network I chose a shield based on the ENC28J60 chip; Danny Kimbler sent me a sketch that instead uses the official shield (W5100 chip) and the DS18B20 temperature sensor: I published his sketch in my Github’s repository, let’s describe some code:…
Many PCB services now are able to produce custom shaped PCBs: for example Seeedstudio’s FusionPCB service (I’ve already blogged about it) in the past published photos of round PCBs… and even doll-shaped ones: In this tutorial I’m going to show how to draw custom shaped PCB using Inkscape and Eagle. Workflow Eagle’s PCB editor doesn’t offer advanced drawing tools (Bezier…
In the previous blog post, you learned how to send big files (html pages, images…) with your ENC28J60 shield. Today I’m going to show you a complete webserver! Description The user’s browser sends a request, through the network, to the ENC28J60 module. The request is analyzed by the sketch that is running on the Arduino, which also prepares the…
A colleague asked me to try to repair his tablet, an Inno-hit IHA C0707A. The tablet had a problem with the power switch, moreover the internal speaker wasn’t working. After having opened it, I noticed that the speaker’s wires were disconnected from the main board and the power switch was broken: First I tinned the wires…
FTDI are widely used in electronic devices, in particular for USB-serial adapters. In the past some blogs reported that on the market there were many counterfeit chips, that are chips labeled as FTDI but manufactured by other companies. A deep analysis shows several differences between the original and the fake chips. In the last few days on different forums (Arduino, EEVBlog, Hack’a’Day…)…