From Trash to Treasure: How to Resurrect a Minitel Terminal

One of us (Mailland) grew up in Paris in the 1980s, surrounded by advertisements for racy “pink” chat rooms, accessible through terminals connected to France’s Minitel network. They were a lucrative part of the wider Minitel economy, which also let you send messages, check bank balances, and read news. By 2000, as the Internet displaced the Minitel network, the billboards started being replaced by piles of ...

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Cheap Arduino Serial Terminal

How about a cheap serial terminal for less than a fiver all-in? In a previous blog entry I’ve been working on more developments for the increasingly powerful home control system using an Arduino as a kind of universal I2c peripheral to the ESP8266. The reason for that is just the vast range of driver software our there and the fact that from China you can get an Arduino-Nano-type-board for under £2. There a ...

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How To Select an Inductor

When I was working on the the latest version of the Common Parts Library, I realized that it would be helpful to explain why you might pick one type of inductor over another. We started off this series by writing “How to select a capacitor,” followed by “How to select a resistor,” and are continuing with a close look at inductors. In this blog, we will explain all the different types of inductors, their mer ...

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DIY Arduino Relay Driver Shield

In this DIY project we make a 3-Channel Arduino Relay Shield Circuit for relay based applications. We designed an isolated PCB for 3 relays. By using this Arduino Relay Shield, we can operate 3 AC appliances at a time. We have put a two pin screw terminal blocks (Neutral, NO) for connecting appliances. Here we have provided PCB layout, circuit diagram, and Gerber files so that you can build or directly orde ...

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Ultrasonic Blind Walking Stick Using Arduino

Ultrasonic Blind Walking Stick According to the WHO, about 30 million people are estimated to be permanently blind worldwide. These people are totally dependent on others. They even cannot walk on their own. We have created designed and built an “Ultrasonic Blind Walking Stick” device which will help blind people to walk with ease independently. As a simpler version, we have used only one ultrasonic sensor ...

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Control the Position of a Continuous Rotation Servo via WiFi

Position control using wifi from a smartphone sounds too good to be true? Do it with MKR1000. Things used in this project Hardware components Arduino MKR1000 × 1 Hand tools and fabrication machines 3D Printer (generic) Story Many position control use steppers because they are easy to deal with and are cheap. RC servos are easy and cheap too, but they are limited to half revolution. Continuous rotation servo ...

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Publish Any Event to Wia Using Your MKR1000

How to setup an MKR1000 and publish an event or location to Wia. Things used in this project Hardware components Arduino MKR1000 × 1 Software apps and online services Wia Hand tools and fabrication machines Wia Platform Story Setup Your Environment Install the Arduino IDE (Integrated development environment). This is where You can download it for Mac OS X, Windows and Linux here. Detailed instructions can b ...

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Send SMS with SIM900D in Proteus ISIS

Hello friends, hope you all are fine and having fun with your lives. Today, I am going to share a new exciting post on Send SMS with SIM900D in Proteus ISIS. In my previous post, I have shared the new GSM Library for Proteus, which is the first ever designed library for Proteus, and I am quite excited while sharing its features. So, today, we will use this GSM Lirbary for Proteus and we are gonna send sms w ...

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How to Select a Resistor

When I was working on the next version of Common Parts Library, I realized that it would be helpful to explain why you might pick one type of passive component over another. We started off by writing “How to Select a Capacitor” last month, and are following it up with a close look at resistors this month. In this blog, we will explain all the different types of resistors, their merits and demerits, and popu ...

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Add SSL Certificates To MKR1000

Cannot connect to your favourite https site with your MKR1000? Follow this guide to install SSL certificate in a easy way using the GUI. Things used in this project Hardware components Arduino MKR1000 × 1 Software apps and online services Arduino IDE Arduino Firmware updater Story Please note that with the IDE starting from version 1.6.10 the certificate uploader (and the firmware updater) is direct inside ...

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How To Select a Capacitor

When I was working on the capacitors section for the next version of Common Parts Library, I realized that it would be helpful to explain why one might pick one capacitor type over another. This information is important because there are a lot of factors (temperature characteristics, package, etc.) which might make a type of capacitor (electrolytic or ceramic) better than others for your project. In this bl ...

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DC-DC Buck Converter Circuit – How to Step Down DC Voltage

In this project we are going to make a Buck Converter Circuit using Arduino and N-Channel MOSFET with a maximum current capacity of 6 amps. We are going to step down 12v DC to any value between 0 and 10v DC. We can control the output voltage value by rotating the potentiometer. A buck converter is a DC to DC converter, which steps down DC voltage. It is just like a transformer with one difference; whereas t ...

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