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by DavidSturzenbecher
Fri Jan 27, 2017 4:09 am
Forum: General discussion
Topic: Noise on the audio line: modding the power supply?
Replies: 20
Views: 5617

Re: Noise on the audio line: modding the power supply?

I am guessing you don't have access to a scope? That would make your troubleshooting much easier.
by DavidSturzenbecher
Mon Jan 16, 2017 1:41 pm
Forum: General discussion
Topic: Stereo sound recording, mic separation question.
Replies: 16
Views: 2937

Re: Stereo sound recording, mic separation question.

Gregeric, The datasheet for the microphone you are using says it is an omni microphone, which means it picks up sound from all directions equally. The "Near-coincident technique" more commonly referred to as "XY" or "X-Y mic technique" requires the use of a cardiod or directional mics. The only way ...
by DavidSturzenbecher
Sat Jan 14, 2017 2:56 pm
Forum: General discussion
Topic: Maximum DC input voltage for power?
Replies: 22
Views: 5130

Re: Maximum DC input voltage for power?

TheWaterbug,

I haven't seen that camera module before. Have I been living under a rock?
by DavidSturzenbecher
Wed May 18, 2016 1:45 am
Forum: Other projects
Topic: Rackmount mounting
Replies: 2
Views: 17408

Re: Rackmount mounting

I just took a 2 RU blank, drilled 4 holes, and then mounted the pi on the back. Pick up a right angle micro USB and you are set.
by DavidSturzenbecher
Sat Jan 16, 2016 1:08 pm
Forum: Python
Topic: Pi2 Interrupt Timing - Anemometer
Replies: 6
Views: 1474

Re: Pi2 Interrupt Timing - Anemometer

I was able to finally get around to loading the read_RPM_py with pigpio. Needless to say, the results were quite consistent with the readings from my own code. Here is a sample of the terminal output from the example code loaded directly, with just the GPIO pin remapped to the pin I was using, and a...
by DavidSturzenbecher
Fri Jan 01, 2016 7:57 pm
Forum: Python
Topic: Pi2 Interrupt Timing - Anemometer
Replies: 6
Views: 1474

Re: Pi2 Interrupt Timing - Anemometer

Bump....anyone have any ideas?
by DavidSturzenbecher
Fri Dec 25, 2015 4:10 pm
Forum: Python
Topic: Pi2 Interrupt Timing - Anemometer
Replies: 6
Views: 1474

Re: Pi2 Interrupt Timing - Anemometer

Hi Joan,
I am not sure I completely follow. The interrupt calls the def MOTION(): script.
by DavidSturzenbecher
Thu Dec 24, 2015 9:54 pm
Forum: Python
Topic: Pi2 Interrupt Timing - Anemometer
Replies: 6
Views: 1474

Pi2 Interrupt Timing - Anemometer

Hello, A few months back a write a nice little python program to count and record wind speed via an externally connected reed type anemometer. The code has worked quite nicely, displaying GNUplot graphed results over the past 6 hour, 12 hours, 24 hours etc on a PiTFT display. The heart of the anemom...
by DavidSturzenbecher
Wed May 20, 2015 12:42 pm
Forum: Automation, sensing and robotics
Topic: Can a DS18B20 be connected to Pi via long cables?
Replies: 14
Views: 6160

Re: Can a DS18B20 be connected to Pi via long cables?

Massi,
Not sure what was going on with my setup (2 months ago). For the quote of mine you referenced, my results were off of a breadboard with quite short leads. My thoughts are that there was something wrong with the sensor itself.
by DavidSturzenbecher
Tue May 19, 2015 2:25 am
Forum: Automation, sensing and robotics
Topic: Can a DS18B20 be connected to Pi via long cables?
Replies: 14
Views: 6160

Re: Can a DS18B20 be connected to Pi via long cables?

Hello, I really don't have extensive knowledge on the one wire protocol, but i would bet someone else on the forum does. My guess (i could be completely wrong) is that the sender unit is designed only to "pull down" the line when sending data. To save money there is probably no "pull up" circuity in...
by DavidSturzenbecher
Fri May 01, 2015 2:15 am
Forum: Automation, sensing and robotics
Topic: Home lights control - with manual control also
Replies: 13
Views: 20642

Re: Home lights control - with manual control also

If you really needed to know the state of the light, you could have a circuit monitor current or the (stepped down and rectified) voltage after the final two way switch.
by DavidSturzenbecher
Sun Mar 15, 2015 5:29 am
Forum: Automation, sensing and robotics
Topic: Can a DS18B20 be connected to Pi via long cables?
Replies: 14
Views: 6160

Re: Can a DS18B20 be connected to Pi via long cables?

I am doing the exact thing by stealing already installed cat5 (in my case) for use with DS18B20 sensors. I also had a cat5 going through the wall to the outside world near the cable/telco hookup that was not in use, so now I have an outside temp reading as well. I did have to add a little more pull ...
by DavidSturzenbecher
Sat Mar 07, 2015 2:22 pm
Forum: General discussion
Topic: Where to buy RPi 2 living in USA?
Replies: 11
Views: 2409

Re: Where to buy RPi 2 living in USA?

I also buy from Adafruit. They have great starter/sample code for all the little sensors and doo daads they sell, so I like to buy form them whenever logical.
by DavidSturzenbecher
Tue Mar 03, 2015 12:22 am
Forum: Python
Topic: Good resources for graphical programming/plotting?
Replies: 8
Views: 1427

Re: Good resources for graphical programming/plotting?

I have used GNUplot and Pygame to do simple graphing and displaying. Didn't take long to pick it up at all.
by DavidSturzenbecher
Tue Feb 17, 2015 5:13 pm
Forum: Raspbian
Topic: PCmanFM and Menu
Replies: 3
Views: 1500

Re: PCmanFM and Menu

Bump,
I am looking for a solution too.
by DavidSturzenbecher
Mon Feb 09, 2015 4:42 am
Forum: Python
Topic: Removing data from list (weather station)
Replies: 9
Views: 1099

Re: Removing data from list (weather station)

Dave - Thanks that worked perfectly Dougie - I really didn't even need the formatting at all so my date ended up being 1502071853 - I was able to tell gnuplot this was my date format and it looks like it's working. See any issues with that? asandford - I guess I am not familiar with how databases ar...
by DavidSturzenbecher
Sat Feb 07, 2015 5:45 pm
Forum: Python
Topic: Removing data from list (weather station)
Replies: 9
Views: 1099

Removing data from list (weather station)

Hello, I am just starting out with my first python project making a weather station. Every 5 minutes, my python code is adding a line to a file. After a little while the file "InsideTempTest.txt" looks something like this... 65.75 11:00AM 02-07-15 65.86 11:05AM 02-07-15 65.97 11:10AM 02-07-15 66.09 ...
by DavidSturzenbecher
Mon Dec 29, 2014 8:53 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Other cameras for Pi?
Replies: 31
Views: 11570

Re: Other cameras for Pi?

tchiwam,
What was your interval for shots in the youtube clip?

-Dave
by DavidSturzenbecher
Wed Dec 24, 2014 2:43 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO connection with insert-able pins
Replies: 3
Views: 872

GPIO connection with insert-able pins

Hello, I am working on a RPi project which will need a very secure GPIO connection. My project will live inside of a proto armor case, so there will not be room for a GPIO breakout board. This is leading me towards the female counterpart to the GPIO header, with either insert-able pins or solder cup...

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