Browsing All posts tagged under »arduino«

Programming Arduino Uno in pure C

March 29, 2011

57

Playing with Arduino board and its graphical development environment I felt the urge to work closer to the hardware, stepping away from the default library and the Java IDE and using the compiler directly from the command line. Fortunately all the tools are there, because the Arduino IDE uses them under the hood. So I […]

Capturing an analog signal with Arduino and python

March 26, 2011

1

Last week I salvaged a magnetic sensor from a stationary bike and connected it to my Arduino Uno in order to analyze the sensor’s behavior with the ADC converters.   I wanted to capture a good enough signal, so I searched about the Arduino capabilities: From analogRead() reference description: It takes about 100 microseconds (0.0001 […]

Salvaging an old stationary bike RPM sensor

March 20, 2011

7

I had to dispose of an old stationary bike that little by little fell apart. Before throwing it away I wanted to see if I could salvage something from its simple electronics. The bike has a sensor that somehow detects the rotation of the crankset and then is used to display the RPM on a […]

ZPUino open source processor

March 6, 2011

0

ZPUino is a project that offers a microprocessor that can be put on FPGA, and that can be programmed with a simple IDE. Everything is open source: the toolchain, the IDE and the VHDL code; and it can be downloaded freely. The hardware architecture is based on the ZPU (Zylin CPU), which is a processor […]

Getting started with Arduino Uno on Ubuntu

January 31, 2011

17

I really wanted to try Arduino; Arduino narrates a story where the good guys are winning. Saturday I arranged to buy one, the Arduino Uno, and the first thing that came into my mind was “Wow, it’s really smaller than I thought possible!”. I went home and started unboxing it: the packages comes with a […]

Taking a look at Arduino schematics

January 23, 2011

2

Out of curiosity I wanted to check some Arduino board schematics. The Arduino Uno is one of the newest boards and is also quite simple; its open source schematics can be downloaded from here(zip file). There are two files: a board layout file and a schematics file. They can be opened with the free (but […]

ARM Cortex-M3 boards with STM32 chip

September 21, 2010

0

The ARM Cortex-M3 is the baseline of ARM 32-bits microcontrollers. Many products spawn from its design: the Cortex-M0 (a stripped-down version for small systems), the Cortex-M1 (specifically designed to be implemented in FPGA) and the Cortex-M4 (with Digital Signal Processing extensions). One chip family that contains the Cortex-M3 is the STM32. STMicroelectronics recently introduced the […]

OpenRisc simulator runs Linux

December 6, 2009

2

OpenCores is an organization owned by ORSoc that invests in open source hardware. Their site hosts many hardware projects that ship the source code (Hardware Description Language in this case) with the GNU Lesser General Public Licence. This allows the adoption of free Intellectual Properties (hardware blocks) in any hardware design, being it proprietary (closed-source) […]

Links for 2009-05-24

May 24, 2009

0

Biodegradable, solar-powered netbook runs Linux via LinuxDevices.com A startup in Spain is readying a mini-netbook with open source Linux software and a solar power option. The under-$200 “Gyy” is based on a MIPS-based Ingenic processor clocked to 400MHz, offers an 8-inch, 800 x 480 display, and is made of biodegradable materials, says iUnika. What to […]

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