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.
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.
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:
- Analog circuits and analysis have never been my strong points and this is a great way to change that
- 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.
What you see above is the first breath of the seismometer – which is currently detecting my foot taps.
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.
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.
I made a card for a friend. I didn’t want to give just any old, boring card so I decided to add some pretty lights into it. This was the result:
I’m really interested in aviation and lately, I’ve been toying with the idea of making a glass cockpit. This is a big project and most of my time will probably be spent on it. There are a lot of different systems for the glass cockpit like an IMU, an MCU to take in sensor data, a display for showing information and much more.
I’m starting off the project by working on understanding GPS. I’ve managed to make my own (albeit bulky) GPS receiver that shows coordinates, speed, altitude and heading:
What you see is a fluorescent light bulb being lit up wirelessly by the Slayer Exciter.