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Offline Tue Albertsen  
#1 Posted : 26 March 2024 17:15:21(UTC)
Tue Albertsen

Denmark   
Joined: 27/04/2022(UTC)
Posts: 14
Location: Hovedstaden, Copenhagen
Hi All
I have read a lot of topics about S88 connection to CS3 from Arduino. I'm looking for someone who can confirm that I can connect an Arduino nano at the end of my S88 chain via the RJ45 connector. I have no S88Link unit in the chain - just pure 60881 units.

In case it's possible - how is the pin mapping? I have read the "Arduino used as an S88 occupancy detector board" at "Rudysmodelrailway" website but is still confused how the connection is done and if at all is possible to combine 60881 units with one or more arduino's at the same time.

Best regards..

/Tue
Offline Ross  
#2 Posted : 26 March 2024 22:08:38(UTC)
Ross

Australia   
Joined: 25/09/2006(UTC)
Posts: 896
Location: Sydney, NSW
Hi Tue/All,

You may want to read the article below by Mike Jagoe.

Arduino Based s88

Hope you find it useful.

Ross
thanks 1 user liked this useful post by Ross
Offline Tue Albertsen  
#3 Posted : 27 March 2024 08:23:16(UTC)
Tue Albertsen

Denmark   
Joined: 27/04/2022(UTC)
Posts: 14
Location: Hovedstaden, Copenhagen
Originally Posted by: Ross Go to Quoted Post
Hi Tue/All,

You may want to read the article below by Mike Jagoe.

Arduino Based s88

Hope you find it useful.



Hi Ross
Thanks for your reply. It's a really good article, and he really solves some of the problems. But i'm stuck with a basic problem about how to "physical" connect the arduino to the S88 bus on my CS3+. If I used a CS2 or S88Link or ECoS it would be easier because the access to their S88 bus is not via an RJ45/PDS cable, but directly to named pin on the hardware.

I haven't seen anyone do the the connection to an CS3+ S88 Bus. And that worries me. I'm also curious if I can mix the arduinos with marklin S88 units on the same unit (cable).

Best Regards
/Tue

thanks 1 user liked this useful post by Tue Albertsen
Offline PerR  
#4 Posted : 27 March 2024 09:40:27(UTC)
PerR

Denmark   
Joined: 19/05/2014(UTC)
Posts: 48
Location: Sjælland, Kirke-Hyllinge
Please note that the S88 bus on a CS2 is using 5 Volt and that the S88 bus on a CS3+ is using 12 Volt.
I guess that 12 Volt on an Arduino will kill it.
If you are using an Link88, you will have the opportunity to reduce the voltage on the S88 bus to 5 Volt.
Link88 can be used for CS2, CS3 and CS3+ and is connected by mean of the CAN bus.
Best regards
Per
thanks 1 user liked this useful post by PerR
Offline Tue Albertsen  
#5 Posted : 27 March 2024 11:45:55(UTC)
Tue Albertsen

Denmark   
Joined: 27/04/2022(UTC)
Posts: 14
Location: Hovedstaden, Copenhagen
Originally Posted by: PerR Go to Quoted Post
Please note that the S88 bus on a CS2 is using 5 Volt and that the S88 bus on a CS3+ is using 12 Volt.
I guess that 12 Volt on an Arduino will kill it.
If you are using an Link88, you will have the opportunity to reduce the voltage on the S88 bus to 5 Volt.
Link88 can be used for CS2, CS3 and CS3+ and is connected by mean of the CAN bus.
Best regards
Per


Thanks Per - I was (almost) aware of the difference in voltage. But do you hereby say that the only way to interface from Arduio is via the CAN bus through an Link88?

Best regards

/Tue
Offline PerR  
#6 Posted : 27 March 2024 13:18:58(UTC)
PerR

Denmark   
Joined: 19/05/2014(UTC)
Posts: 48
Location: Sjælland, Kirke-Hyllinge
It is not the only way, but if you are looking for an easy way of connecting an Arduino to a CS3+, then I will recommend a Link88.
Best regards
Per
thanks 2 users liked this useful post by PerR
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