MembersPage/NielsenRacing (2005-11-30 16:15:10)

Welcome to NielsenRacing!


I've been looking around a while for a good aftermarket EMS. Getting to know MembersPage/SimonMarmander, who has tested three different EMS' on his car and finally dialing it in with the GenBoard led me to VEMS. After seeing the many uses and possibilities it has first hand, I just had to buy a v3.3 for myself. The number of sensor inputs is one of them. MembersPage/EmilLarsson helped me over the phone so I managed to find the 9 free ADC's. Thanks!

This means lots of sensors, so the ECU will sens everything that happens; to control or prevent. Nice, perhaps I won't blow as many engines in the future as in the past, and if I do, at least I can log it and se why it happened. =)


The car:

Engine:


My VEMS-setup for the B23/16V will be as follows:

Sensor inputs:

ATMEGA 128:

MCP3208:

DIGITAL:

You have many extra sensors.

I guess you want to use MCP3208 channels to capture them. To build input protection and RC lowpass filters, a similar circuit is used:

vrtomic.gif

If we put a few RC filters on a small breakoff-board in our next PCB-batch, we'll apply BAV99 diodes too, for extra protection.

Connector pinout

I guess you use an endplate mounted DSUB25 for the many extra sensor inputs (right ?) If so, the small (16x45mm?) filter PCB could be designed to mount on the DSUB25, in edgestyle.

Outputs:


Feedback and comments are welcome!

Christian Nielsen

Bollebygd, SWEDEN