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by flippant
Mon Jul 07, 2014 3:14 am
Forum: General discussion
Topic: "Interference" on GPIO15 with 433.92mhz Receiver Module
Replies: 8
Views: 3944

Re: "Interference" on GPIO15 with 433.92mhz Receiver Module

How did you go with this? I'm trying to do the same thing here (with an RxB1 receiver) but I don't even know where to start.
by flippant
Wed Feb 19, 2014 8:03 pm
Forum: Troubleshooting
Topic: Python permanently locking up serial port?
Replies: 2
Views: 2671

Re: Python permanently locking up serial port?

The code that does not work (after pyserial has been used and the connection closed) is this: cat /dev/ttyUSB0 So it seems pyserial is closing the connection for good. Not even reconnecting the Arduino (USB) helps. #!/usr/bin/python3 from serial import Serial import subprocess, time, sys ser = Seria...
by flippant
Wed Feb 19, 2014 7:01 pm
Forum: Troubleshooting
Topic: Python permanently locking up serial port?
Replies: 2
Views: 2671

Python permanently locking up serial port?

Hi there, I am using an Arduino Nano with my RpiB to collect temperature and light readings like so: Date, internal temp, ambient temp, humidity and lux 2014-02-19 18:40:03|19.32|12|55.88|0 2014-02-19 18:45:03|19.3|12|55.96|0 (lux works, it's just pitch black in there at the moment.) To log these me...
by flippant
Tue Feb 18, 2014 10:42 pm
Forum: General discussion
Topic: Round LCD to RPi
Replies: 22
Views: 10963

Re: Round LCD to RPi

The link is dead.

Could anyone tell me where to find a screen like this, or if whether something like this (eBay) would work with the Pi?

It's perfect for my intended use and would be a lot of fun setting up!
by flippant
Mon Feb 17, 2014 9:18 am
Forum: Python
Topic: Interrupts from an Arduino in Python
Replies: 7
Views: 2012

Re: Interrupts from an Arduino in Python

It only just occurred to me that, since the Arduino (nano) is 5v, and the Rpi 3.3v, just running a cable from one to the other might not work (and might even be dangerous?)
by flippant
Mon Feb 17, 2014 9:06 am
Forum: Python
Topic: Interrupts from an Arduino in Python
Replies: 7
Views: 2012

Re: Interrupts from an Arduino in Python

So having a separate python script in an infinite while loop calling the start/stop of raspivid is the preferred course of action, then.
by flippant
Mon Feb 17, 2014 8:49 am
Forum: Python
Topic: Interrupts from an Arduino in Python
Replies: 7
Views: 2012

Re: Interrupts from an Arduino in Python

Which method is the more redundant? This is for a system that will be sitting unattended for quite some time.
by flippant
Mon Feb 17, 2014 8:22 am
Forum: Python
Topic: Interrupts from an Arduino in Python
Replies: 7
Views: 2012

Interrupts from an Arduino in Python

Hi there, I have a project whereby I want to trigger an interrupt from the Arduino. While not entirely confident this will work, here is my plan: 1. Have a sketch running on the Arduino (nano, connected through USB) that will set a pin N to HIGH if criterion X is fulfilled. 2. Run a wire from pin N ...
by flippant
Thu Feb 13, 2014 9:39 am
Forum: Camera board
Topic: Snipping the first X seconds of raspivid?
Replies: 5
Views: 1099

Re: Snipping the first X seconds of raspivid?

Yeah, can't re-encode; I'm trying to keep postproduction times after the shot as short as possible. At about a minute all in now, rendering a image+text video "intro" (because I can't overlay anything onto the video itself) and concatenating the two of them.
by flippant
Thu Feb 13, 2014 9:01 am
Forum: Camera board
Topic: Snipping the first X seconds of raspivid?
Replies: 5
Views: 1099

Re: Snipping the first X seconds of raspivid?

Interesting. Thank you.

Is there any way to force frame demarcations at given points? In say, avconv?
by flippant
Thu Feb 13, 2014 5:35 am
Forum: Camera board
Topic: Snipping the first X seconds of raspivid?
Replies: 5
Views: 1099

Snipping the first X seconds of raspivid?

Hi there, I am running raspivid at 2 fps, which causes the first 3-4 seconds to be very dark. I would like to snip these frames off, but it is turning out to be much more difficult than anticipated. Since the videos will run until halted by an external process I will not know how long they are befor...
by flippant
Wed Feb 12, 2014 2:51 pm
Forum: Automation, sensing and robotics
Topic: For the Wine Cellar: Concept Critique Please!
Replies: 10
Views: 4988

Re: For the Wine Cellar: Concept Critique Please!

I'm still waiting on an arduino nano to use for the analogue sensors (I'll be polling a light sensor/setting up an interrupt when the light comes on to trigger the script). Without the actual sensors available to me yet, I've been working on the data collection and generation side of things. I can n...
by flippant
Tue Feb 11, 2014 10:52 pm
Forum: Networking and servers
Topic: Connecting with the google Youtube API
Replies: 2
Views: 1155

Connecting with the google Youtube API

Hi there, I'm trying to write a script that will automatically upload a video to youtube after it has been recorded. My problem is that I can't find a way to authenticate the raspberry pi as the owner of said google account (Oauth 2). There isn't any information on this I've been able to find either...
by flippant
Tue Feb 11, 2014 6:29 am
Forum: Camera board
Topic: Outdated avconv in apt-get (03/2013) - problems
Replies: 11
Views: 2364

Re: Outdated avconv in apt-get (03/2013) - problems

Well, this turned into a debacle of epic proportions. I recompiled raspivid (didn't work). Abandoned that. Then I messed around trying to render the text+graphic video, which I got working Then I tried joining it with the raspivid video, which worked—on my laptop The moment it was uploaded to youtub...
by flippant
Mon Feb 10, 2014 9:45 am
Forum: Camera board
Topic: Outdated avconv in apt-get (03/2013) - problems
Replies: 11
Views: 2364

Re: Outdated avconv in apt-get (03/2013) - problems

I've got the entire userland git repository on my pi now, and I've made the change in the file—what do I do now? I can't seem to get it compiled.
by flippant
Mon Feb 10, 2014 9:09 am
Forum: Camera board
Topic: Outdated avconv in apt-get (03/2013) - problems
Replies: 11
Views: 2364

Re: Outdated avconv in apt-get (03/2013) - problems

If you could try that, I would be very grateful, James :)
by flippant
Mon Feb 10, 2014 9:09 am
Forum: Camera board
Topic: Outdated avconv in apt-get (03/2013) - problems
Replies: 11
Views: 2364

Re: Outdated avconv in apt-get (03/2013) - problems

Here's what I'm doing: 1. using imagemagick to generate a transparent text-only image 2. overlaying that onto a photo 3. encoding that with libx264 into a 5-second .h264 (looping the video and adding a 5-second sound file) 4. shooting a raspivid in the same resolution and framerate (720p 2fps) 5. us...
by flippant
Mon Feb 10, 2014 9:04 am
Forum: Camera board
Topic: Outdated avconv in apt-get (03/2013) - problems
Replies: 11
Views: 2364

Re: Outdated avconv in apt-get (03/2013) - problems

I need 31, which is what avconv is putting out when I encode a video (a 5 second video containing 1 image) with libx264. I can't get the level of that to anything but 31—or 3.1, I guess.
by flippant
Mon Feb 10, 2014 8:50 am
Forum: Camera board
Topic: Outdated avconv in apt-get (03/2013) - problems
Replies: 11
Views: 2364

Outdated avconv in apt-get (03/2013) - problems

I am currently in need of one of the new features of libav's avconv (namely the ability to change the AVC level through -x264-params—I need this because raspivid is locked into level 40, and MP4Box won't let me concatenate a raspivid with another h264 video for that reason). The version of avconv av...
by flippant
Sun Feb 09, 2014 12:17 am
Forum: Automation, sensing and robotics
Topic: For the Wine Cellar: Concept Critique Please!
Replies: 10
Views: 4988

Re: For the Wine Cellar: Concept Critique Please!

lomsdalen wrote:Have you succeded in building this concept?
Am still working on it—on and off.
by flippant
Sat Feb 08, 2014 4:14 pm
Forum: Networking and servers
Topic: Best Twitter integration for RPi?
Replies: 3
Views: 1243

Re: Best Twitter integration for RPi?

Using tweepy, would the following setup be feasible for realtime feedback? Files realtime.py - Run as a continuous background process. Keeps a stream open and listens for direct messages (on_direct_message apparently) parser.py - Called by realtime.py. Contains the various command and parameter tree...
by flippant
Sat Feb 08, 2014 3:37 pm
Forum: Networking and servers
Topic: Best Twitter integration for RPi?
Replies: 3
Views: 1243

Re: Best Twitter integration for RPi?

I like tweepy because it's simple. If you want an excellent twitter program (in Perl) then best choice is TTYtter http://www.floodgap.com/software/ttytter/ it even has some extensibility where you can get TTYtter to do special stuff with your tweets. http://www.floodgap.com/software/ttytter/adv.htm...
by flippant
Sat Feb 08, 2014 11:03 am
Forum: Networking and servers
Topic: Best Twitter integration for RPi?
Replies: 3
Views: 1243

Best Twitter integration for RPi?

Hi there, I am building a project that I aim to have being queried by twitter DMs as a primary means of use. Because of this, I am looking for a Twitter script/framework that will somehow allow for twitter DMs being pushed to the RPi (or some way to upgrade the 1 query/minute limit of the API now). ...
by flippant
Mon Aug 19, 2013 1:43 am
Forum: Automation, sensing and robotics
Topic: Recording Bird Song. Help!
Replies: 6
Views: 1616

Re: Recording Bird Song. Help!

There are USB sound cards available very cheaply on eBay. Would these be an option?
by flippant
Mon Aug 19, 2013 1:42 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Maximum current drawn from USB (Model B)
Replies: 8
Views: 5303

Re: Maximum current drawn from USB (Model B)

Is there any good data available on what the draw is for a variety of peripherals?

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