Jump to content

Tech Spam thread - because 1/4" BSP gets 5 hand spans to the jiggawatt


Roman

Recommended Posts

I guess it's just the difficulty of explaining the idea in a binary context of vaccum and atmo pressure, without a great indication of velocity either.

 

(Which is why it looks weird that it "fills up" from the valve end, if it showed the velocity better it would be clearer)

  • Like 1
Link to comment
Share on other sites

  • Replies 6.1k
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

  • 2 weeks later...

I found some tube on ebay to do exactly that a while ago to fit integrale evo bushes on my delta turbo. never fitted them but did obtain the tube and it was all gee. wasnt toooo expensive, maybe $30 for a foot of tube. expensive for tube I guess but you dont need much of it.

Link to comment
Share on other sites

Electronics question people!

 

I bought a cruise control switch for my car.

 

Measuring the resistance with the switch while it isnt wired up, I get:

 

on  70 ohm

cancel 153 ohm

resume 230 ohm

set 620 ohm
 

I've got it wired up as an analog input, so it gets a 5V supply in one side and outputs to the ECU.

 

However whenever I pull on the lever for any option, it zings to 4.98 volts.

 

I've tried to find some circuit diagrams for how they're normally setup, one indicate that there's generally a 1kohm resistor on the output. Tried this, but same thing.

 

Any ideas? Does it matter if the resistor is before or after the switch?

 

Is there some formula or something for what value resistor would work?

 

Or do I need to limit the current being supplied or something like that. It doesnt matter what voltages it ends up outputting, so long as they are distinct and between 0-5v.

Link to comment
Share on other sites

Yeah so oddly the switch has three pins out, but there are only 2 pins/wires out on the cable.

 

Will be a prick of a thing to try fit a 3rd pin.
 

1k resistor doesnt seem to make any difference.

 

Might get my old man to check this one!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...