Analogue sensor signal to CAN bus - How to?

[356DNA]

I have a Caterham 7 than currently runs 3x 0-5v analogue sensors for oil pressure, fuel level and water temp. As part of several projects I have 3 new caterham oil, fuel and water temp gauges. Unfortunately, for me, they are can bus gauges whereas my existing signals and gauges are analogue.

Can anyone advise what I would need or how I would go about converting the analogue signals into a stand alone CANbus network for the 3 new gauges. I'm fairly confident I can get hold of the CAN protocol for the new gauges, but I haven't a clue where to start with an analogue to CAN converter.

Any help or pointers massively appreciated.

David.

[Super Josh]

Something like this?

Josh

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The one above looks good value.

You could also make something with a Raspberry Pi but you might spend more than that.


There are lots of other devices available but they're more aimed at industry use so will cost a lot more:
https://www.kasensors.com/en/products/signal-condi...
https://www.accuratetechnologies.com/NetworkAnalys...

Have you got any kit to look at the CAN traffic when it's working? Kvaser and Peak are the cheapest "professional" interfaces to get CAN data displayed on a PC.


Wiring wise you'll need a 120ohm resistor at one end of the network (between CAN H and L). "Proper" networks have one at each end but something short like this will probably work with just one end.

[356DNA]

Super Josh said:

Something like this?

Josh

Yes. I saw this but wasn’t certain if I could program it to the protocol of the caterham gauges. Anyone know if this is possible?

Thanks.

[rawkyjnr]

Hi all,

I reckon best way to do this is to use an Arduino and an adaptor. Then, you can program it yourself !

https://store.arduino.cc/can-bus-shield-v2