Consider dropping R1 and R2 about 2k or 2k2. Will give you squarer edges hwen scoped as wellradioelf wrote:Hi Basti, thanks for the comment.
-The C11 would have to be in the board "GPIO adapter", but already in use.
-OK, R6 / R7 1k or 10K maximum.
-Learn first and if possible to design access remote equipment at home to monitor the current draw, voltage input, etc. (home monitoring through web ...)
more information: http://radioelf.blogspot.com.es/ Sorry, only in Spanish
Google is a good start:WimVO wrote:Does anyone know where one can find the kind of things one could control with a Pi plugged into the CAN bus of a Volkswagen Golf ?
Take care of what you try to do. Make if fun, but safe !WimVO wrote:I'm currently thinking of Cruise Control and maybe the infotainment screen would be fun too,
Google have a lot of information :WimVO wrote: but I have really no idea what CAN even is, let alone what it can and cannot do.
I thought I had done some searching but I guess I was too focused on the Raspberry Pi, which is not always involved. What was interesting in that post is that it seems to claim there is more than just one bus going through the car. Currently I have only knowledge of one connector sitting under my steering wheel and that's indeed only supposed to be used for diagnostics. So maybe I'll have to go looking for other busses elsewhere for what I'm trying to do.Zeta wrote:Google is a good start:
http://hackaday.com/2011/04/26/enhance- ... s-hacking/
That will be the tricky part. Cruise control can be turned on and off manually, and eventually it can be set to a certain speed. There are only a few common used speed limits in my country, so I was hoping I could install a set of buttons that would allow me to pick one of those predefined speeds, rather than manually adjusting until I reach one. Ofcourse the moment I brake or otherwise disengage the cruise control, any attempts to adjust it's speed should cease immediately.Zeta wrote:Take care of what you try to do. Make if fun, but safe !
Lastly, when my navigation system is on, it may show an icon in the top left corner mentioning the speed limit that counts for the stretch of road it thinks I'm on. Should I be able to read that value I may be able to do things like give an audio warning if my cruise control speed does not match the given speed limit, or maybe even adjust it down for me if it looks like I'm going too fast. Assuming I can read information off the screen.Zeta wrote:Google have a lot of information :
Yes, the part you are trying to find is only the CAN bus protocol for this specific car. This has nothing to do with the RaspberryPi.WimVO wrote:I guess I was too focused on the Raspberry Pi, which is not always involved.
The raspberry pi with the can driver IS a bus sniffer, so you don't need to buy costly hadware, you only need two chips, one oscillator, 2 capacitor, some resistors and a breadboard (10$ ?).WimVO wrote:I was hoping to be able to get a view of all the information that regularly passes over the bus, without having to purchase a bus sniffer.
Depends on WHICH 5v logic. "TTL compatible" 5V CMOS will be fine. Real TTL will be ok voltage wise but you have to watch that the 3.3V side can drive enough current. 5V CMOS devices that are NOT advertised as TTL compatible are likely to be maginal when fed from 3.3V logic, they might work they might not, devices with schmitt trigger inputs are especially likely to be problematic.Gert van Loo wrote:If I recall: you can drive 5V logic from 3V3