Tiger_one said:
I am running Violamart hub motor with NO display or anyway to control PAS so I need this!
The Violamart controller can be connected to a SW900 display, allowing you to access the PAS settings. You need to connect 2 wires for the serial comms (Rx Tx) on the board and move the DMS connection as below.
I Used the existing 6 wire throttle cable, so I could use the throttle, as below.
In the controller:
Removed the green and yellow cables from DMS to - Green to Tx, Yellow to RX. Located at the far end of the board
Put a blue connected to DMS (where the Gr and Y cables were ) and brought out through grommet.
Using the cable to the throttle:
cut the Brown, Green and Yellow cables
cut the plug off the SW900 (mine was not the waterproof one)
connect (T)brown to (SW)Red
connect (T)green to (SW)Green
connect (T)Yellow to (SW)Yellow
connect extra blue cable to (SW)blue
joint (T)black to (SW)black - keeping the black connected out to the throttle.
worked straightaway fro me.
Newer SW900 has 9 PAS levels