I am trying to work with the seeedstudio can-Bus Shield (v0.9b) and currently try to find out why I don’t get anything.
To find the correct pins in the sub-9 connector I played around with my Multimeter and found out that both Can-Pins are connected which is somehow strange since Can is based on the different potential on the pins. To be more precise: I inserted my two probes into the green Can-Connectors for CanH and CanL and got a resitance of about zero (nice beeps from the multimeter). I also got this when touching the top middle and right pins of the sub9 (If you turn the shield around it’s pretty easy to see which pins are connected to the green terminal).
Is my shield broken or have I made a mistake? Could someone repeat my experiment and tell me what you get?
Today I used a better multimeter and got a resistance of 62Ohm between the Pins.