#1: How and where connect custom CAN bus realtime logger? Author: janosik, Posted: Wed Jun 24, 2015 8:09 pm ---- Hello,
Just trying to make custom CAN bus module to read car speed and engine RPM (revolutions) in real time, maybe also try to display own messages on 1 line clock and trying to figure out where could be the best place to connect this thing?
I will based on
Microchip MCP2551 CAN Transceiver (Reader)
I've read this nice intro to VAN bus
VAN Bus to USB interface graham.auld.me.uk/proj...an-pc.html
also read this, where many car CAN busses are shown:
Alarm CAN-BUS module MCB-01/02 www.jablotron.com/file...-02_en.pdf
Unfortunatelly, I can't find my Peugeot 206 1.4HDi (2002 Husky winter version) CAN bus connection details
As I know I have MUX version (double checked also using Multiplexed Fuses BOX description there:
Fuses in MUX www.206info.co.uk/Foru...t=108.html
with photo of my BSI (this is EU car with left steering wheel, so BSI is on driver side) and all those fuse values matches nicelly
Maybe close to radio connecor wires-I've non factory external cheap one-are spare CAN bus wires connectors available?
#2: Re: How and where connect custom CAN bus realtime logger? Author: macca1411, Location: Westhoughton, LancashirePosted: Thu Jun 25, 2015 12:37 am ---- Would it not be easier to get a bluetooth EOBD reader and download an app so you can see the details on your phone screen?
#3: Re: How and where connect custom CAN bus realtime logger? Author: janosik, Posted: Thu Jun 25, 2015 5:19 am ---- Nope, because of I need monitor vehicle speed and engine RPM revolutions in realtime and microcontroler preprogrammed to do specific tasks based on those readings
So, this is not for diagnostics purpose, but as enhancement CAN module.
Using builtin car clock display (CAN bus, one line of characters PPT40 = Multiplexed, I hope ) to display some data including custom GPS module could be nice feature, so reading CAN bus is first step-control car clock display is another step...
Probably I will try to see how this car clock display is connected-there must be CAN bus wires, since some messages like opened doors, danger ice flashing temperature, etc are displayed in real time, so if I were able to crack at least this CAN bus communication it could be good starting point
#4: Re: How and where connect custom CAN bus realtime logger? Author: Addaz, Location: SuffolkPosted: Thu Jun 25, 2015 7:09 am ---- The interior of the vehicle runs van, the only can network is between the abs, engine ecu and bsi
#5: Re: How and where connect custom CAN bus realtime logger? Author: janosik, Posted: Thu Jun 25, 2015 7:48 am ----
Addaz wrote:
...the only can network is between the abs, engine ecu and bsi
So, VAN bus is the only available at LCD display module or close to external radio connectors? It should be possible to connect to CAN bus in read only mode, since I wouldn't like interfere with CAN bus, while it looks like critical systems are there-just read CAN bus frames-detect those those with vehicle speed or engine RPM, than in a optoisolated way (no electrical connection) drive VAN bus, eg. to display custom message on car clock display LCD.
I do not need transmit enything to CAN bus, but optionally to car LCD, so it is not a problem if VAN and CAN buses are separated
Anyway, thanks for sharing this.
I believe in after looking into linked above Alarm connection to CAN bus BSI in other cars including Citroen and other Peugeot models, that those CAN bus wires in Peugeot 206 might be on back side of BSI module and maybe marked CAN-H: black/pink and CAN-L white/pink in BSI blue connector as shown below (from Alarm CAN bus setup)
#6: Re: How and where connect custom CAN bus realtime logger? Author: Addaz, Location: SuffolkPosted: Thu Jun 25, 2015 10:13 am ---- I seriously have no idea what the flying f*** your going on about
The can connections are on the front of the bsi, im trying to grasp your logic on what your doing and how but i cant
#7: Re: How and where connect custom CAN bus realtime logger? Author: MrBSI, Location: What's it to you? ? ?Posted: Thu Jun 25, 2015 1:33 pm ---- I can see this ending up with needing to order some new magic smoke as some is going to escape
I've got visions of a 206 on the back of a recovery wagon requiring a replacement BSI unit.
#8: Re: How and where connect custom CAN bus realtime logger? Author: Sim, Location: West CountryPosted: Thu Jun 25, 2015 4:20 pm ---- He wants to wire tap (in good sense) into the CAN bus and read off broadcast messages
#9: Re: How and where connect custom CAN bus realtime logger? Author: janosik, Posted: Thu Jun 25, 2015 4:35 pm ----
Addaz wrote:
The can connections are on the front of the bsi, im trying to grasp your logic on what your doing and how but i cant
Yep, copy that -I've at least found them by looking more carefully in those scans Electric system Multi-plex built from October 2001 www.206info.co.uk/Foru...39224.html
They are not at great resolution, but especially this page is what I was interested in, since it shows VAN 9004/9005 between BSI and Instrument cluster, but also VAN 9004A/9005A between Instrument cluster and car MFD display, so basicly it looks like there is no need to touch CAN 9000/9001 bus between BSI and ECU, while I guess that instrument cluster speedometer and tachometer receive vehicle speed and engine RPM from engine speed sensor 110 connected to ECU as well as vehicle speed sensor 109 wired to engine fusebox (5) and via VAN 9012/9013 to BSI, so BSI can send this unformation to head display (instrument cluster) on steering wheel head display
Thank you @Addaz , you helped me a lot since information that thare are VAN buses and CAN bus between BSI and ECU was essensial to solve this puzzle
@MrBSI No worry, since I have wiring diagram of audio and instrumentation cluster with MFD display connections, my plan is make teardown of MFD module and logs its VAN bus first using modified code from already linked previous work graham.auld.me.uk/proj...an-pc.html and the only physical contact with VAN bus will be using mentioned IC Microchip MCP2551 CAN in read only mode, so its time to know better VAN bus internals.
I hope, I'l be able determine properly VAN bus pins and its connectors in MFD, Internal cluster and audio connector which seams to have also BSI VAN 9004/9005 pins
#10: Re: How and where connect custom CAN bus realtime logger? Author: dwery, Posted: Mon Aug 24, 2015 5:56 pm ---- Hello,
I can confirm the data you are searching is on the VAN bus. However, you cannot
write to the display.
the display updates its data by reading what's available on the
bus, I was unable to find any message that allows to display arbitrary characters.
check the following link for a documentation
of the known frame types
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