tag:blogger.com,1999:blog-9344444.post6130407937815468596..comments2023-11-27T06:19:12.204-05:00Comments on Jeremy's Blog: Raspberry Pi 7 segment displaysjerblyhttp://www.blogger.com/profile/03046368186007640865noreply@blogger.comBlogger21125tag:blogger.com,1999:blog-9344444.post-36966374401853612612020-08-30T07:08:05.669-04:002020-08-30T07:08:05.669-04:00I am using 4 inches 12V driven common cathode 7 se...I am using 4 inches 12V driven common cathode 7 seg displays. Any points to remember ?Roniehttps://www.blogger.com/profile/10099798829223477113noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-4455062334125126372020-08-30T07:04:58.047-04:002020-08-30T07:04:58.047-04:00Any schematic for this please Any schematic for this please Roniehttps://www.blogger.com/profile/10099798829223477113noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-14107297300323151782012-10-02T11:27:19.702-04:002012-10-02T11:27:19.702-04:00I'd be interested in a kit if you can buy in b...I'd be interested in a kit if you can buy in bulk and make it cheaper for the parts. Thanks, Martyn<br />martyn dot jones at yahoo dot comGeekTeacherhttps://www.blogger.com/profile/17123681974508581833noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-67073623923131387252012-09-27T01:48:03.740-04:002012-09-27T01:48:03.740-04:00@Tim Gaines - I expect you're right about the ...@Tim Gaines - I expect you're right about the common cathode. I just connected it all up. In the video the two buttons are from <a href="http://jeremyblythe.blogspot.co.uk/2012/07/raspberry-pi-gpio-and-motion.html" rel="nofollow">another project</a> and not used here.jerblyhttps://www.blogger.com/profile/03046368186007640865noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-68535167062303366262012-09-27T01:35:50.448-04:002012-09-27T01:35:50.448-04:00What are the two switches used for in the video?What are the two switches used for in the video?Anonymoushttps://www.blogger.com/profile/04446453479241824871noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-20731773388486308912012-09-23T21:30:10.210-04:002012-09-23T21:30:10.210-04:00Jeremy, first of all, Thank you very much for sha...Jeremy, first of all, Thank you very much for sharing this with us all. This is GREAT!<br /><br />Question: Since pin #3 and #8 on the Digital Display are a common cathode and they are connected internally, it would not be necessary to connect each one to the ground as you have done correct? Or am I wrong. I'm just trying to figure this stuff out since I'm a noob.Anonymoushttps://www.blogger.com/profile/04446453479241824871noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-42135960349631838682012-09-10T04:23:08.356-04:002012-09-10T04:23:08.356-04:00Perfect, thanks.Perfect, thanks.creasehttps://www.blogger.com/profile/13812691116866078496noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-57447621963850856682012-09-09T17:56:41.351-04:002012-09-09T17:56:41.351-04:00Crease is this any use to you.
https://docs.goog...Crease is this any use to you. <br /><br />https://docs.google.com/open?id=0BxzgirLSsCj7bm1YSmhIT0VhRUk<br /> <br /><br />The 3.3v you're using will not harm the Pi you'll be fine just follow the tutorial. Works like a charm.Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-23778354135568743692012-09-09T14:22:41.913-04:002012-09-09T14:22:41.913-04:00This is a great tutorial and just what I need to p...This is a great tutorial and just what I need to progress. I think I have worked out the circuit but there are a few connections I would like to check before wiring up just in case it goes kaboom. Just wondered if you could post your wiring diagram?<br /><br />Also, I read all about protecting the pi from overload, I couldnt see any on your circuit - am I missing it??creasehttps://www.blogger.com/profile/13812691116866078496noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-29672011626830611912012-08-11T18:06:09.827-04:002012-08-11T18:06:09.827-04:00Glad you got it working. The int:number in the @ap...Glad you got it working. The int:number in the @app.route recorator is causing confusion here mostly because it's being stripped out or fiddled with by various bits of JavaScript on this blog. When I get a moment I'll put this on git so it can be downloaded raw. If you have int:number it will convert to an int for you so you don't need to code that. It will also reject non integer URLjerblyhttps://www.blogger.com/profile/03046368186007640865noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-6619988930537852802012-08-10T07:34:35.418-04:002012-08-10T07:34:35.418-04:00Jeremy, THANKS!!! I finally got it working. As y...Jeremy, THANKS!!! I finally got it working. As you suggested I got PIP installed and then went from there. (can't remember whether I used GPIO 3 or version 2) However in your code at the end (line 33) on the second section I had to omit the 'int:number' as this generated errors. I also found through a long process of testing (using humble PRINT statements etc) that you must turn Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-80010901679484052082012-08-10T00:45:49.498-04:002012-08-10T00:45:49.498-04:00You'll have to install pip first. Use apt-get ...You'll have to install pip first. Use apt-get on Raspbian or pacman on Arch. The package will most likely be called pip or python-pip. On Arch the default is python 3 so to get the version 2 pip it's simply pip2.jerblyhttps://www.blogger.com/profile/03046368186007640865noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-67566241699257409262012-08-09T14:52:55.501-04:002012-08-09T14:52:55.501-04:00Jeremy, I too have 2 Pi's and hoping to get 5 ...Jeremy, I too have 2 Pi's and hoping to get 5 more for school (secondary). If I try 'pip install flask' (which I had tried) in Raspian from the LXTerminal it just tells me that 'bash: pip: command not found'. <br /><br />Do I have to install something first? Maybe update my sources or something. I'm a bit rusty on the programming front and haven't tried anything Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-21263701169791849092012-08-09T10:29:19.457-04:002012-08-09T10:29:19.457-04:00I'm lucky enough to have two raspberry pis. I&...I'm lucky enough to have two raspberry pis. I'm running Arch on the main one (for this experiment) and the latest Raspbian on the other one. Under Raspbian just type: pip install flask. Help is available through: pip -hjerblyhttps://www.blogger.com/profile/03046368186007640865noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-74990312399008640002012-08-09T09:10:51.667-04:002012-08-09T09:10:51.667-04:00Jeremy despite my best efforts I have not found a ...Jeremy despite my best efforts I have not found a decent guide on using PIP, everything mentions using virtual installer. I dabbled with this, but did not get very far. Which distro were you using, Debian Squeeze or Wheezy (Raspbian). You help is greatly appreciated.Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-30207928141703579212012-08-06T10:36:58.682-04:002012-08-06T10:36:58.682-04:00Would you know how to do this WITHOUT the BCDs??? ...Would you know how to do this WITHOUT the BCDs??? Love it great!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-9344444.post-10486812762316220252012-08-03T19:43:50.434-04:002012-08-03T19:43:50.434-04:00Maybe you've got a really old version of flask...Maybe you've got a really old version of flask installed via apt. I use pip to install all python packages. Basically what it's doing is ensuring that the last part of the url is an integer so the <int:number> will take what you've put in the url and put the integer at the end into the variable called 'number'.jerblyhttps://www.blogger.com/profile/03046368186007640865noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-4511514103755207372012-08-02T09:57:53.697-04:002012-08-02T09:57:53.697-04:00/int:number/int:numberMr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-48326669421046428642012-08-02T09:57:04.844-04:002012-08-02T09:57:04.844-04:00Dammit, that just stripped the <> but out of...Dammit, that just stripped the <> but out of that... I think that's the error.Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-47326418532157405422012-08-02T09:55:49.525-04:002012-08-02T09:55:49.525-04:00Trying out the second tutorial. Got all the code ...Trying out the second tutorial. Got all the code inserted etc. (I know nothing about FLASK) but installed it via 'aptitude', when I run the script it error on app.run(host='0,0,0,0',8092)<br /><br />The pointer indicated it's not happy about the bit any suggestions?Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.comtag:blogger.com,1999:blog-9344444.post-88135480250802433592012-08-01T15:55:44.880-04:002012-08-01T15:55:44.880-04:00Loving the tutorial. Getting back into electronic...Loving the tutorial. Getting back into electronics after a Loooong break. Had one or two issues. But your ideas are inspiring me!!! Line 43 in your first section of code is redundant, infact if you leave it the same as line 54 and set the both to 1 sec (for testing purposes) you'll see it count to 9,19,10 or 19,29,20. I just removed the line and the count works fine. I would have bought Mr Routledgehttps://www.blogger.com/profile/10514041055282676414noreply@blogger.com