Clik here to view.
First Adafruit NeoPixel Blinks with the FRDM Board
LEDs are getting smarter these days. An amazing example are the WS2812(B) or ‘NeoPixels’ from Adafruit: RGB LEDs with a built-in constant current controller and shift register! With a single wire data...
View ArticleClik here to view.
Adafruit NeoPixel Clock with 60 LED’s
After the problems with level shifters (see “First Adafruit NeoPixel Blinks with the FRDM Board“) I received the ordered 74HCT245N. Put it on a bread board, wired it up, … only to find out that the...
View ArticleClik here to view.
LED Clock with Kitchen Hot Pan Protector
When I showed my 60 NeoPixel LED clock prototype to my daughter and her girlfriend, and they both wanted to have one right away :-). Well, that clock was just a proof of concept, with lots of temporary...
View ArticleClik here to view.
BBQ Smoker Monitoring Robot
I have to admit: I’m not a vegetarian. I love BBQ, and no offense to vegetarians! Today is perfect day for another BBQ session, and this time I plan to enhance it with electronics. No, not eating...
View ArticleClik here to view.
User Interrupt on NMI Pin with Kinetis and ExtInt Component
While my beef brisket (see “My First DIY Smoked Beef Brisket: Day 1“) is smoking on ;-), I have time to investigate a problem I was running on in my lecture on Friday: For the Joystick shield (see...
View ArticleClik here to view.
Cheap and Simple WiFi with ESP8266 for the FRDM Board
How cool would it be to add WiFi support to any projects or IoT? Why not using WiFi with a microcontroller which has only few KBytes of RAM and FLASH. For less than US$5? Dreams came true, and...
View ArticleClik here to view.
Illustrated Step-by-Step Instructions: Updating the Freescale Freedom Board...
I have received a bunch of Freescale FRDM boards to be used in an Embedded Systems programming crash course. There are multiple issues with the boards coming from the factory: They come with an old...
View ArticleClik here to view.
NeoShield: WS2812 RGB LED Shield with DMA and nRF24L01+
In my earlier post I used a hacked together shield for building a clock based on Adafruit’s NeoPixel/WS2812 (“LED Clock with Kitchen Hot Pan Protector“). The new design supports now 8 parallel data...
View ArticleClik here to view.
Tutorial: Playing MP3 Files with VS1053B and FRDM Board
I want to make some noise with this post!!! This tutorial is about adding music and sound capabilities to the Freescale Freedom board, and to have a lot of fun with it :-). I need this ability for a...
View ArticleClik here to view.
Tutorial: Web Server with the ESP8266 WiFi Module
It has been a while since my first post about the ESP8266 (see “Cheap and Simple WiFi with ESP8266 for the FRDM Board“). The ESP8266 is a new inexpensive ($4.50) WiFi module which makes it easy to...
View ArticleClik here to view.
Tutorial: IoT Datalogger with ESP8266 WiFi Module and FRDM-KL25Z
In my earlier post “Tutorial: Web Server with the ESP8266 WiFi Module” I used the ESP8266 WiFi module to run a local web server. This is a cool way to control devices inside my network. But to use...
View ArticleClik here to view.
Infotronic WS2014 Sumo Robots are Ready!
The Sumo robots are ready to battle today! The robots participate in two different battle modes: Semi-Autonomous with remote controller, based on FRDM-KL25Z and nRF24L01+ transceiver and Bluetooth:...
View ArticleClik here to view.
eWheel Velo Bling-Bling Freescale Project
So here is a really, really cool project: eWheel Velo Bling-Bling: ‘Velo’ is the local Swiss term for ‘bicycle’, and no, this is not my project ;-). It is the one of Peter Schmid. Peter wanted to say...
View ArticleClik here to view.
OpenOCD/CMSIS-DAP Debugging with Eclipse and without an IDE
OpenOCD is an open source and free-of-charge debugging solution, which is a great option here at the University of Lucerne, as students do not need to buy an expensive debugging probe. Still, I...
View ArticleClik here to view.
FRDM-KL25Z Arduino Headers with Altium
In case you are using Altium to design your boards, then this one might be useful for you: I have have posted the Altium .SchLib and .PcbLib files on GitHub here:...
View ArticleClik here to view.
Command Line Programming and Debugging with GDB
Eclipse with GDB is great: it comes with a graphical front end for debugging. But sometimes it is all about to download a program. Is it really necessary to launch an IDE like Eclipse to program or...
View ArticleClik here to view.
Altium File for Freescale FRDM-K25Z Board
If you are designing your own board for the Freescale FRDM boards, then having the matching PCB design files is a good thing to have. I have posted this week an Altium contribution on GitHub for the...
View ArticleClik here to view.
Using the DHT11/DHT22 Temperature/Humidity Sensor with a FRDM Board
For a home automation project I need to know the room temperature and humidity percentage of the room air. Adafruit has an inexpensive DHT11 sensor from http://www.aosong.com which I decided to use for...
View ArticleClik here to view.
Poor Man’s Trace: Free-of-Charge Function Entry/Exit Trace with GNU Tools
There are cases where my application runs find for days, weeks or even months, but then from time to time there is an application crash. Yes, the watchdog will recover it, but still it would be good to...
View ArticleClik here to view.
First Adafruit NeoPixel Blinks with the FRDM Board
LEDs are getting smarter these days. An amazing example are the WS2812(B) or ‘NeoPixels’ from Adafruit: RGB LEDs with a built-in constant current controller and shift register! With a single wire data...
View Article