Browsing All posts tagged under »arduino«

EE & CS: A JTAG/XSVF Library for Arduino

September 2, 2015

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Marcelo Jimenez wrote an Arduino library to apply XSVF patterns on a JTAG interface using the Arduino as a JTAG adapter. It is especially useful for FPGA/CPLD programming. In the example provided in the GitHub repository, the XSVF file is passed through the serial port using a client-side python script. Some time ago I started some similar […]

Arduino Ethernet shield on STM32 Nucleo

August 2, 2015

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I have a clone of the Arduino Ethernet shield R2, and I already hooked it up on an Arduino Uno, as explained in a previous post. But I also have an STM32 Nucleo-F103RB board, which is similar to Arduino with respect to many of its pins, so I wanted to try this shield with it. The main […]

Arduino Ethernet shield and Python socket

June 14, 2015

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I started playing with an Ethernet shield for Arduino that I bought at a faire. I noticed that the shield itself is not original, but it’s a clone of the Arduino Ethernet Shield version 5.0, also identified as revision 2. The shield provides Ethernet connectivity and has an SD card slot to provide non-volatile memory […]

Linux.conf.au 2015 Keynote: Linus Torvalds

January 21, 2015

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The linux.conf.au conference has been held last week in Auckland. The videos of the conference have been published, and among them I saw the segment starring Linus Torvalds. The keynote was moderated by Andrew Tridgell, and the participants were Linus, Bdale Garbee and Paul “Rusty” Russell. Here is an outline that I hope can be useful if you don’t have time […]

Using a rain sensor with Arduino Uno in C

December 23, 2014

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An application written in C that interfaces a rain sensor to Arduino Uno by reading digital and analog signals, and visualizing the levels on a PWM-driven LED and a serial terminal.

Arduino interrupts in C: implementing a time switch

December 15, 2014

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This post continues the series of simple Arduino applications written in C instead of the official Arduino language and IDE. See the previous posts about the basics, using a buzzer and a LED matrix. The goals of using C are mainly to understand better the microcontroller, to reduce the needed resources in terms of code memory, RAM and […]

Drawing on a 7×5 LED matrix with Arduino in C

November 15, 2014

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In my component drawers I have a LTP-7357AG, which is a matrix of 35 green LEDs conveniently packaged in a 12-pin display. I wanted to play with it so I began to hook it with my Arduino Uno. This post is part of a series about programming Arduino applications in C. I’m going to show the results first, […]