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Mar 2 14

Seismic Sundays 5 – Fail

by admin

Take a look at these two waveforms pulled from a UART line with a logic analyzer. Notice anything interesting?
Screen Shot 2014-02-26 at 11.13.58 PM
Screen Shot 2014-02-26 at 11.14.19 PM
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Feb 17 14

Seismic Sund….Nope

by admin

It has been a crazy busy week for me and my brain is temporarily shut down so there will be no updates on the seismometer today. In the meantime, enjoy the some cat gifs and we’ll see you next week.

Feb 9 14

Seismic Sundays 4 – Circuit Analysis

by admin
Analysis gone horribly wrong

Analysis gone horribly wrong

We’re almost done with this stage of the project! (I think…). Admittedly, this part has taken me longer than I initially anticipated, mainly because I wanted to spend a bit of time trying to figure out what the heck was going on with the circuit (circuit analysis isn’t exactly one of my strong points…yet)

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Feb 3 14

Seismic Sundays 3 – Debugging Woes

by admin

First, I have to admit that I messed up building the conditioning circuit. The first RC network after the first op-amp stage should have had a 6.8kΩ resistor. I accidentally used a 68kΩ resistor instead.


Screen Shot 2014-02-02 at 6.36.50 PM
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Jan 26 14

Confessions of an EE – Oscilloscopes

by admin

Because I haven’t done anything with the seismometer this week, there is no update today. Instead I will talk about things that make wavy stuff appear on something that looks like a tiny TV screen.

Yes, that's the one!

Yes, that’s the one!


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Jan 20 14

Seismic Sundays 2 – Old Haunts and Bode Plots

by admin

seismo_sch_partial

For the next few posts, we will be going into the nitty gritty details of the conditioning circuit. I want to spend lots of time at this stage for two reasons:

  1. Analog circuits and analysis have never been my strong points and this is a great way to change that
  2. The last thing we want, is to work with erroneous data caused by poor design of the conditioning circuit

Today, we will be briefly looking at the circuit and focusing on its behaviour.

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Jan 13 14

Seismic Sundays 1 – Hello, World!

by admin

IMG_0333

What you see above is the first breath of the seismometer – which is currently detecting my foot taps.

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Jan 6 14

Seismic Sundays 0 – The Beginning

by admin

Img Credit: Wikipedia

Img Credit: Wikipedia


Welcome to part one of the Seismic Sundays series! For the next 3 to 6 months, I’ll be attempting to make a seismology station that sends data to a web server for anyone to see. Today’s post won’t have anything technical on it. I will just be talking about what I plan on doing.

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Jan 2 14

Ringing in the New Year

by admin

photo

Oh, is it 2014 already?

Well then, happy new year everyone! It’s been a pretty eventful year here at meoWS and I’d like to summarize some of the big things that happened in 2013 as well as talk about what’s going to happen this year.

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Oct 15 13

I am Moving!

by admin

Thanks, /u/Rissaka


I recently accepted a job offer and am moving to a whole new town! Therefore, all my projects have some to a temporary halt while I relocate and settle down. I hope to be back at the end of the month or early November.
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