Wiring hall-sensor

All Megasquirt 1 support questions. See also the Documentation

Moderators: jsmcortina, muythaibxr

Post Reply
Vezzel 309 GTI16
MS/Extra Newbie
Posts: 18
Joined: Mon Feb 14, 2005 9:20 am
Location: Danmark
Contact:

Wiring hall-sensor

Post by Vezzel 309 GTI16 »

MSnS-E on a V2.2 board
As the shematics claims should i make at jumper from pin24(planning to use the free hole next to R29) to pin 28(unused hole right from X12 and X13) Should I just use a piece of wire or should I use a 390 Ohm resistor? The resistor is used as a Pullup-resistor, right?
Is it nessesary to use a resistor inline to power the Hall-sensor?

Image
alfa75ba
Helpful MS/Extra'er
Posts: 36
Joined: Mon Jul 25, 2005 3:10 pm
Location: Sarajevo, BiH

Post by alfa75ba »

Hi,

I have just done Hall sensor wiring few weeks ago and here is how I did it:

you need that resistor on pin 24, whether you get +12V from outside or inside. I got +12V from relay box (+12 for injectors) through 1 kOhm resistor.
I put 1 kOhm since on the Alternate schematics 2 it says that the resistor value should be 1.3 - 2 kOhm. (I have not changed anything inside the MS box-it is just like in the scheme you posted).

As for 10 Ohm to Hall supply, this is what I found in this forum: if you are powering it directly-use it.
If you are powering Hall sensor from ignition module than you do not need the resistor.
I connected Hall to "smart" Bosch module, no resistor.

The most important thing, it works just fine for me.

And, just to make sure, my Hall sensor is high, and goes low when triggered.

Hope this helps,

regards, Drazen
Post Reply