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Serial hookup JeeNode to Raspberry Pi
One way to connect an RFM12B to a Raspberry Pi is to simply plug in a JeeLink, using the built-in USB capabilities of the RPi. But that’s a bit of a detour – why go through USB? Since the JeeNode’s...
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Resetting a JeeNode from a RPi
Now that the JeeNode talks to the Raspberry Pi, it’d be interesting to be able to reset the JeeNode as well, because then we could upload new sketches to it. It’s not hard. As it so happens, the next...
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Timing troubles with upload
Since the Raspberry Pi can now reset a JeeNode, I assumed that uploading would be a piece of cake. Hmmm… maybe not quite. The trouble is timing, and I’m currently I was pulling my hair out on this one:...
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Linux real-time hickups
To give you an idea why a simple little Linux board (the Carambola on OpenWrt in this case) is not a convenient platform for real-time use, let me show you some snapshots. I’ve been trying to toggle...
View ArticleNode.js on Raspberry Pi
After all this fiddling with Node.js on my Mac, it’s time to see how it works out on the Raspberry Pi. This is a running summary of how to get a fresh setup with Node.js going. Linux I’m using the...
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Embedded Linux – Carambola 2
This has got to be one of the lowest-cost and simplest embedded Linux boards out there: It’s the Carambola 2 by 8devices.com: The 28 x 38 mm (!) bare board is €19 excl VAT and shipping, and the...
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Carambola 2 power consumption
The Carambola 2 mentioned yesterday is based on a SoC design which uses amazingly little power – considering that it’s running a full Linux-based OpenWrt setup. There are a couple of ways to measure...
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Speedy Raspberry
The Raspberry Pi is an amazing little board, with an amazing amount of power and functionality at an incredible price – it’s probably fair to say that our technology geek’s world will never be the same...
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Another new kid on the block
Besides the Odroid U2 quad-core Linux board mentioned a few days ago, there’s another option in the same price range as the Raspberry Pi – the Beaglebone Black, a.k.a. “BBB”: Yeah, ok, it’s slightly...
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