Danish VW beach buggy Vems v3.1 project. 4 cyl boxer engine, port inj, wasted spark.
Im still soldering but having a hard time finding the right dokumentation for v3.1
- See GenBoard/VerThree/Schematic
- it's almost same as v3.6 or v3.7 except minor layout changes and v3.1 lacks cam-HALL inverter
23-05-2013
Before pictures.
Topside www.dropbox.com/s/wohkjdyu889yo66/2013-05-21%2001.28.01.jpg
Bottom www.dropbox.com/s/73q3ywo2wmqegbz/2013-05-21%2001.27.01.jpg
So far i have mounted.
Flyback diodes M 724 B14 ZP -> lowZ? confirmed ok.
Transient protection diode 1.5KE18A
L3 1R5 ok
Resistor briged 5X-1-103
26/06/2013
Flyback wire
Fuse1
Connectors
4 IRF640N inj FETs
4 22ohm resistors
2 N408AB 14N40FVL FETs
Not mounted jet.
Mapsensor
Anything else missing ?
Topside www.dropbox.com/s/5lrytxlz9129kc4/2013-05-23%2000.39.58.jpg
Bottom www.dropbox.com/s/97iwhmmsr837lg8/2013-05-23%2000.40.18.jpg
27/06/2013
I have connection problems
Any tricks to connect a very old board (number 57) to vemstune ?
im receiving 192byte's from ECU (sending 84byte) before getting "Could not find ECU"
28/06/2013
Problem with comunication fixed, forced into bootloader mode and updated firmware to "1.1.94 bootloader update"
Whats the recommended firmware version ??
Trigger Setup
Is this set up for primary hall sensor ?
Picture: www.dropbox.com/s/5lrytxlz9129kc4/2013-05-23%2000.39.58.jpg
Not really, you need for primtrig HALL: SJ2 closed !!!, SJ6 open (which is so), see GenBoard/Manual/InputTriggerHardWare
Links:
- GenBoard/Manual/InputTriggerHardWare
- [v3.1 schematic]
14/4/2014
Trigger Setup
I found out that I have a VR sensor instead of a Hall sensor... dooh ;-)
R30 = Removede again
C88 = Not mounted
R55 = 10Kohm
SJ1 = Shorted
SJ2 = 10Kohm <- is this ok ?
SJ6 = Shorted
D14 = Not mounted
R56 = mounted again = 10Kohm
C30 = ok
R57 = 75Kohm
R87 = 1000Kohm
C38 = ok
R88 = 100Kohm
C31 = ok
C39 = ok
Mesurement between Trigger1 connecter and LM1815 pin3 = 20Kohm = ok
Mesurement between LM1815 pin12 and AVR pin 29 = 0ohm = ok
19/04/2014
Grounding on fiberglass buggy
Where should i put my grounds ?
Engine is under the black cross
Battery is under the blue cross
Ecu is mounted on a 2mm stainless steel plate, i have perpared a line of 6mm bolts for grounding on the plate.
Where to put GND5. (powerground) ?
Where to put sensor GND. ?
Picture -> www.dropbox.com/s/47uucgpqvje1tc4/buggy-vems-grunding.jpg