In Part 1 of this series I have covered the SD card on the Arduino Ethernet shield. In Part 2 I’m hooking up the board to the network and will be able to ping it Hardware The W5100 has a … Continue reading ![]()
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FRDM with Arduino Ethernet Shield R3, Part 2: Ping
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FRDM with Arduino Ethernet Shield R3, Part 3: Embedded Web Server
This is Part 3 of an ongoing tutorial to use the Arduino Ethernet Shield R3 with a Freescale FRDM-KL25Z board (or any other board you like). In Part 1 I worked on the SD card, in Part 2 I have … Continue reading ![]()
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DIY Free Toolchain for Kinetis: Part 10 – Project Creation with GNU ARM Eclipse 2.1.1
As mentioned in Part 9: There is a new GNU ARM Eclipse plugin 2.1.1, and this one makes project creation for Freescale devices easier than ever Native Kinetis-L project templates for FRDM-KL25Z and FRDM-KL46Z boards Easier than ever project creation … Continue reading ![]()
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Tutorial: Thermal Printer, Part 1: Hardware Setup with FRDM Board
One of my embedded projects is to measure the running time in a sports event (see “Sports Timing System in a Lunch Box“). The recorded time is stored in an EEPROM plus sent over USB or wireless connection to the … Continue reading ![]()
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Starting Point for Kinetis Low Power LLS Mode
In “IoT: FreeRTOS Down to the Micro Amps” I’m using an application with FreeRTOS to get down in micro amps low power mode. Well, nearly all or my applications are using FreeRTOS because it makes the application scalable and extensible. … Continue reading ![]()
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RNet Stack as Component, nRF24L01+ with Software SPI
The great thing with Processor Expert is: it writes the code for me :-). I’m using now the RNet wireless stack in more than 10 different projects, and keeping the projects up-to-date with the RNet stack sources in a traditional … Continue reading ![]()
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Zumo Robots in Bucharest
Freescale opened its doors for students in Bucharest on March 28th. At the event there were more than 80 students and professors from Bucharest and across Romania with participation of the universities from Cluj, Constanta, Craiova, Iasi and Pitesti. … Continue reading ![]()
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The Zumo Bots at FTF 2014
I should have known it better, and I always teach my students that they should take the environment into account. And you know what? This time it was me who missed following that rule. But from the beginning: For the … Continue reading ![]()
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FRDM with Arduino Ethernet Shield R3, Part 4: MinIni
I admit: my Ethernet Shield project got stuck because of too many urgent other priorities. I was not happy with the way the project was using configuration data from FLASH memory: I have now multiple ethernet shields in use, and … Continue reading ![]()
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JoyStick Shield with the FRDM Board
The latest addition to my set of Arduino shields is a true fun thing: The ElecFreaks.com JoyStick Shield :-) ElecFreaks.com Joystick Board with FRDM-KL25Z and nRF24L01+ The board costs less than US$10 (see http://www.elecfreaks.com/store/joystick-shield-v24-p-376.html) and enables any Arduino board to … Continue reading ![]()
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Joystick Shield with nRF24L01 driving a Zumo Robot
With the Joystick shield I have a convenient way to drive and control a Zumo Robot without a wired connection: While things started promising, there was a power supply problem at the end to be solved… Battery for Remote Controller … Continue reading ![]()
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Tutorial: Freedom Board with Adafruit Ultimate GPS Data Logger Shield
Many times I start with a project and tutorial, only to get interrupted for emergency tasks and assignments. For a long time I wanted to add GPS (Global Positioning System) functionality to one of my projects. While I started a … Continue reading ![]()
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Configuration Data: Using the Internal FLASH instead of an external EEPROM
Many applications need to store persistent (non-volatile) data at runtime: configuration data, error logs, sensor data, calibration values, etc. The question is: where to store that data? If it is only a few kBytes, an SD card or similar is … Continue reading ![]()
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Combining GPS Data Logger with Google Earth
So I have now a portable GPS data logger (see “Tutorial: Freedom Board with Adafruit Ultimate GPS Data Logger Shield“). What to do with it? It would be cool to see the data and tracks in Google Earth? Yes, that’s … Continue reading ![]()
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Updated Freedom Board Logic Analyzer with DMA
Question: How to build a low-cost logic open source logic analyzer for less than $15? Answer: combine the Freedom KL25Z board with OLS! I’m dealing recently a lot with DMA (see “Tutorial: PWM with DMA on ARM/Kinetis“), so I took … Continue reading ![]()
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Programmable Ultrasonic Sensor Shield for FRDM Board
“Note to myself: post articles about what students have done this semester…” Students have turned in their semester project work. I have set for myself a goal to briefly describe to the ‘outside’ world what they did, as an inspirational … Continue reading ![]()
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Snake Game on the FRDM-KL25Z with Nokia 5110 Display
So I have a graphics driver for a Nokia display (see “Zero Cost 84×48 Graphical LCD for the Freedom Board“), I have a joystick shield (see “JoyStick Shield with the FRDM Board“) and I do have a Freescale Freedom board: … Continue reading ![]()
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Showcase of Student Project Exhibition 2014 in Horw
Yesterday Friday afternoon, the students at the Lucerne University of Applied Sciences and Arts in Horw showcased their last semester project work to the public at the university. There were many, many interesting projects, so here are a few to … Continue reading ![]()
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printf() and scanf() with GNU ARM Libraries
In “Semihosting with Kinetis Design Studio” I’m using the debugger with semihosting to output text with printf(). But how to use a physical serial connection instead? This post is about how to enable and use printf() and scanf() with GNU … Continue reading ![]()
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UART printf() for the FRDM-K64F Board and Kinetis Design Studio
I had great plans for this Saturday: to work on really cool project. But as so many times, things turned out to be different. Maybe you have read my recent posts about printf()? A colleague wanted to use that article … Continue reading ![]()
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