Step By Step Guide/Notes - VEMS wiki www.vems.hu

Board revision V3.1
- VR sensor connected to trigg1
- If you don't want to take any chances with the sensitive VR sensor you connect it internally. That is at JP8 and JP7.
  - Connect sensor VR+ to JP7
  - Connect sensor VR- to JP8
  - Make sure D14 is there
  - Leave SJ2 open
  - Bridge SJ6
- Done
- If you want to connect the sensor to the EC connector instead of to the header inside the box you need to make these additions:
  - Bridge SJ1 (Found right next to JP7 on the solder side The bottom side its hard to see)
  - Remove R30 (Usually works with R30 still there but if you experience problems you have to remove it. Found under LM1815 on the solder side -- the backside right next to the JP7 hole.)
  - The VR- lead MUST be connected CLOSE to Pin26 on the EC36 connector in this case.
  - The VR+ lead is to be connected to Pin 27.

Insert section for V3.1 on Hall sender hookup. It should be close to the same

Board revision V3.2
- Hall sensor connected to trigg1
  - Solder wire between JP2 (top row middle of the trigger jumper section) and JP7 (top row to the right) [image]
  - Use D14
  - Bridge SJ2 (Leftmost in the LM1815 grouping)
  - Leave SJ6 open (found below LM1815 on component side)
  - The Hall GND lead is connected near Pin26 on the EC36 connector.
  - The Hall signal lead is to be connected to Pin 27.
  - The Hall supply is connected to pin 28.
  - Install 270ohm resistor at R142. (solder side between pin 28 and 29 on EC36)
  - Install 220n capacitor at C69 (solder side between pin 28 and 29 on EC36)
- Done