Flashing a new Android Image to the RIoT Board


I understand the challenges of board vendors: they produce many boards, and typically they have an early/first firmware version on it. And when that board gets shipped to customers, that firmware typically is old and outdated :-(. Same for the RIoT board I have received: I was desperately trying some advanced features, only to realize that the firmware on the board is an older one from this year. So time to update the Android on that board.

Freescale RIoT Board

Freescale RIoT Board

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Exclude Source Files from Build in Eclipse


Sometimes I have source files in my project which I do not want to get compiled (or excluded from build). Because as I’m using the ‘managed make’, all source files matching certain extensions (like *.c) are automatically included into the build.

To exclude a file from build, I right-click on it to get to the properties. There I can select a check box to have it excluded from the build:

File Excluded from Build

File Excluded from Build

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First Steps with the RIoT Board and Android


At the university we have several projects with internet connectivity running. Yes, there is a hype around IoT, and in my view many false perceptions around this what it could or should be. Anyway, for these projects in many cases the Raspberry Pi boards are used, and I use a model B board of the Raspy too. I’m very happy with the Raspy, but I wanted to explore different options, so I ordered a RIoT board two weeks ago. When I looked at it the first time, I was thinking that this board could be a better (although larger) board than the Raspberry Pi one: more USB, more GPIO, micro-SD card, more processing power:

RIoT Board

RIoT Board

Well, then this week the new Raspberry Pi B+ came out: more USB, more GPIO, but same processing power as the standard B model.

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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 device gets very hot… turned off power, and realized that had the device put in with a wrong orientation :-( oh darn! That’s why I always order things like that in quantities of 3 or more :-). Corrected the mistake, and things are running (or blinking) again :-)

74HCT245 Wiring for WS2812

74HCT245 Wiring for WS2812

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