Computing stuff tied to the physical world

LPC810 meets RFM69, part 3

In Book on Jan 28, 2015 at 00:01

Let’s revisit the LPC810 and the RFM69. Things are starting to come together at last.

I’ll pick up where I left off three weeks ago, making two LPC810’s talk to each other via RFM69’s and then picking up the results on a Raspberry Pi over I2C. Hang in there!

You know the drill by now: one article per day, as things become ready for publication.

DSC 4924

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Volta makes the world go round

In Book on Jan 21, 2015 at 00:01

There is a lot more to go into w.r.t. the LPC810 ┬ÁC and the RasPi/Odroid Linux boards, but since surprisingly many design decisions are related to that main driving force of electricity called “voltage”, this is a good opportunity to first cover those basics in a bit more detail.

Here is the list of upcoming articles, one per day:

Here’s a nice diagram from Wikipedia with all the rechargeable battery technologies:

800px Secondary cell energy density svg

Quite a variety, and all of them with different trade-offs. Read the articles to find out why it matters, when to stack ‘em up, how to avoid problems, and what buck & boost is about.

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Embedded Linux

In Book on Jan 14, 2015 at 00:01

The “LPC810 meets RFM69″ series, is being postponed a bit longer than anticipated, the relevant pieces are simply not ready and stable enough yet to present as working code. With my apologies for this change of plans. I’ll definitely get back to this – count on it!

For now, let’s start exploring another piece of the puzzle, when it comes to setting up a wireless network, and in particular a wireless sensor network (WSN)

As usual, each of the above articles will be ready on subsequent days.

DSC 4918  Version 2

If you’ve always wanted to try out Linux without messing with your computer – here’s a gentle introduction to the world of physical computing, from a Linux board’s perspective!

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