tag:blogger.com,1999:blog-5096278891763426276.post1458714779525358597..comments2024-03-28T18:37:12.987+02:00Comments on absorptions: Decoding radio-controlled bus stop displaysOona Räisänenhttp://www.blogger.com/profile/08764440174916554983noreply@blogger.comBlogger28125tag:blogger.com,1999:blog-5096278891763426276.post-2844117050194931882023-08-01T19:56:14.434+03:002023-08-01T19:56:14.434+03:00Does anybody here know how can I make a timetable ...Does anybody here know how can I make a timetable screen I got somewhere to show custom timetables?Bussarihttps://www.blogger.com/profile/12670766511425566198noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-37139187836350712452023-05-03T16:55:28.551+03:002023-05-03T16:55:28.551+03:00that center beacon located in Ruskeasuo,Helsinki, ...that center beacon located in Ruskeasuo,Helsinki, near bus depot. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-21820373694010826782021-09-11T09:30:30.977+03:002021-09-11T09:30:30.977+03:00Thanks for the information, yours was the first si...Thanks for the information, yours was the first site I came across, when I searched Google. Currently playing with my new SDR, so looking for things to decode in UK.Craighttps://www.blogger.com/profile/07821032138025495629noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-22675668873428295542018-10-28T17:37:20.308+02:002018-10-28T17:37:20.308+02:00Extremely interesting.
Would this be usable for a...Extremely interesting.<br /><br />Would this be usable for accessing a terminal a few kilometers away where internet access is an issue?Anonymoushttps://www.blogger.com/profile/06793123657854636844noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-16462951325046928142015-05-18T15:28:29.829+03:002015-05-18T15:28:29.829+03:00Today I spotted a display that was apparently also...Today I spotted a display that was apparently also stuck at bootup, it was showing 8221 IBUS 6.5.100d. <br />Doesn't seem there has been any big f/w updates in the last 2 years ;-)<br />simosaginoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-76963010485379143832014-02-21T17:46:19.787+02:002014-02-21T17:46:19.787+02:00Greetings from Munich! The local public transport ...Greetings from Munich! The local public transport company also uses the Axentia iBus system, and now I think I have to get some more SDRs and build some nice displays... :)<br />Thanks for doing all the stuff like descrambling the data, releasing the code...just thanks a lot! Keep on doin'! :)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-7289954002808522912013-12-28T02:04:26.212+02:002013-12-28T02:04:26.212+02:00regarding the german message you've found, may...regarding the german message you've found, maybe it's something from http://www.initag.com . it's what is used here, and for what i know, they use wifi and other radio stuff to communicate with the displays (and their "hangars" for the chip payment systems).. hope that helps ;)rubennoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-49579502870787440462013-11-30T23:05:20.703+02:002013-11-30T23:05:20.703+02:00I found out that they might be using commercial-gr...I found out that they might be using commercial-grade TETRA (non-encrypted). The equipment is made by Funkwerk. Not as easy to listen on as the IBUS system but could be still doable.<br />Here is some more info about TETRA in Germany: http://tetra.osmocom.org/trac/tonihttps://www.blogger.com/profile/03085056728059538241noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-80391106447365236642013-11-30T13:09:03.956+02:002013-11-30T13:09:03.956+02:00A Raspberry Pi should be able to handle it, I thin...A Raspberry Pi should be able to handle it, I think, and it is rather cheap. Connecting an LCD display should not be a problem, and Ethernet is there from the start.<br /><br />If you want an embedded solution you may want to check one of the STM32F4 Discovery boards (www.st.com/stm32f4-discovery). The ARM Cortex M4 MCU line is said to have specific DSP instructions, and the 32F429IDISCOVERY (http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1199/PF259090) even has a TFT display. This and the original STM32F4DISCOVERY (http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1199/PF252419) both have USB OTG, but I suspect that you may have to write your own rtl-sdr library for that platform.<br /><br />The boards mentioned above have support for Ethernet but need some external hardware, so one possible solution would be to have e.g. a RPi with the dongle, maybe running rtl_tcp, and let the ARM board handle the DSP part.<br /><br />If you want something smaller than the RPi you could check the Carambola 2 (http://8devices.com/carambola-2) running OpenWRT, I have read about the rtl-sdr library being ported to OpenWRT.Johan Adlerhttps://www.blogger.com/profile/09287669598563813745noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-10521839135603220992013-11-30T09:32:32.016+02:002013-11-30T09:32:32.016+02:00Arduino can do all of this, save for the DSP stuff...Arduino can do all of this, save for the DSP stuff. Or you could make your own FPGA.Oona Räisänenhttps://www.blogger.com/profile/08764440174916554983noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-86526109305323636892013-11-30T01:05:04.651+02:002013-11-30T01:05:04.651+02:00What would be the smallest form factor hardware se...What would be the smallest form factor hardware setup this could be implemented on? I could actually do the processing on a separate machine and send the data via TCP. So I guess I would be looking at some very simple SoC with WLAN and LCD interface. Any suggestions for this?Anonymoushttps://www.blogger.com/profile/03934533331243547036noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-82361213902622571182013-11-29T09:47:36.080+02:002013-11-29T09:47:36.080+02:00In theory it is possible, but also illegal of cour...In theory it is possible, but also illegal of course. You do not want to transmit on frequencies you are not allowed to use, and public service FM channels are usually very much off limits. :-)Johan Adlerhttps://www.blogger.com/profile/09287669598563813745noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-56839214748802372242013-11-28T02:45:25.883+02:002013-11-28T02:45:25.883+02:00actually berlin seems to use http://www.lumino.de/...actually berlin seems to use http://www.lumino.de/referenzen.html those guys, they mention nothing with radio on their site. but maybe the train cars and busses themselves send something. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-68649728075462464782013-11-26T22:16:13.600+02:002013-11-26T22:16:13.600+02:00That should be turned into home decorative. I woul...That should be turned into home decorative. I would put such device to my hallway. Would be handy. No need to check busses from computer anymore. Just go and check near the door, when the next one comes.<br /><br />Would be great to have such thing as an application too. For non-technicians. :)Antti Paasivaarahttp://antti.paasivaara.finoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-42543638912830261842013-11-26T18:15:00.287+02:002013-11-26T18:15:00.287+02:00I'm incredibly envious of your skills and expe...I'm incredibly envious of your skills and expertise. I'm definitely subscribing and devouring all of the content you've put up, thank you a lot! :3Seeprahttps://www.blogger.com/profile/16718077390966272479noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-61880034701150113162013-11-26T00:03:50.668+02:002013-11-26T00:03:50.668+02:00You're correct. (I believe it's up there)You're correct. (I believe it's up there)Oona Räisänenhttps://www.blogger.com/profile/08764440174916554983noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-29305512584354639282013-11-25T23:58:47.261+02:002013-11-25T23:58:47.261+02:00Very impressive! I've been looking for this fo...Very impressive! I've been looking for this for years - even called the bus company once but they didn't know anything about how it worked. I believe that it's the same system (in a different package) that is used in the Copenhagen area. Would be a lot of fun to try and see if it was really the same system.<br />What confuses me is the broadcasting. is it correct that route information (lines and destinations) are sent once a day to the displays, while the timing information is sent 3 times a minute - to all displays in the system?banjohathttps://www.blogger.com/profile/15460859397612754074noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-8742157676121553072013-11-25T18:10:20.717+02:002013-11-25T18:10:20.717+02:00Actually, it looks more like a case of placeholder...Actually, it looks more like a case of placeholders in a string that the bus company decided not to use/implement, with "Flughafen" as a placeholder for the the end station, and "Haltestelle 1" for the origin/first stop along the route. No thought was given to actually naming the stations or altering the strings.Saint Fnordiushttps://www.blogger.com/profile/16239103209095118452noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-31860967412875640822013-11-25T16:10:58.728+02:002013-11-25T16:10:58.728+02:00Very cool. Would it be possible to broadcast your ...Very cool. Would it be possible to broadcast your own FM signal to overwrite the displays?Peterhttps://www.blogger.com/profile/14996101519487216892noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-88245879488717387482013-11-25T00:39:59.349+02:002013-11-25T00:39:59.349+02:00Check Axentia's site for different types of di...Check Axentia's site for different types of displays they have, and see if they match.Oona Räisänenhttps://www.blogger.com/profile/08764440174916554983noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-31164131745349074162013-11-24T22:03:05.282+02:002013-11-24T22:03:05.282+02:00Thanks for the insight!Thanks for the insight!Oona Räisänenhttps://www.blogger.com/profile/08764440174916554983noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-10176833388181130222013-11-24T21:58:38.683+02:002013-11-24T21:58:38.683+02:00The mentioned Mono (monitorien ohjaus) controls mo...The mentioned Mono (monitorien ohjaus) controls most information displays at terminals. The same suite of sofware also provides the Omat lähdöt -service and API.<br /><br />Mono gets the real time information from a system called Helmi, which is an implementation of the Thoreb IT-radio product. Helmi also controls the non-battery powered displays at bus and tram stops direct. Helmi is rather old and based on a proprietary radio network with Satel radio modems. The buses don't send out their location. Instead they track their location against route and timetable data and send out event messages about their progress. This is basically due to the limited data carrying ability of the radio network. Route and timetable data is updated at the depot via wifi (used to be something else).<br /><br />The real time GPS location information for trams is provided by separate newer devices, which are not installed in buses. Lauri Kangashttps://www.blogger.com/profile/06097185283115889018noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-38955679040411665712013-11-24T18:28:57.684+02:002013-11-24T18:28:57.684+02:00Good job!
How nice of Axentia to have created suc...Good job!<br /><br />How nice of Axentia to have created such an open system.<br />Perhaps their aim was to crowdsource the maintenance of bus stop bus lists, as well as estimated times of arrival for buses ;-)<br /><br />So, to add to your list of potential applications: helping HSL with bus stop display maintenance tasks.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-51978737410238099522013-11-24T17:51:15.888+02:002013-11-24T17:51:15.888+02:00The Omat lähdöt service and open API from the tran...The Omat lähdöt service and open API from the transport authority contain this same data indeed. However, the textual messages are not available through those, so that's new. Moreover, the GPS location data from the busses would be interesting as that is not available like it is for the metro, trams and trains. Welcome to participate in the transport authority's developer community! http://dev.hsl.fi/Tuukka Hastruphttp://dev.hsl.fi/noreply@blogger.comtag:blogger.com,1999:blog-5096278891763426276.post-13998929237710632192013-11-24T17:31:04.273+02:002013-11-24T17:31:04.273+02:00I hear it's the same.I hear it's the same.Oona Räisänenhttps://www.blogger.com/profile/08764440174916554983noreply@blogger.com