Patrick Posted January 23, 2013 Report Share Posted January 23, 2013 Hi i'm wiring two digital inputs into my expansion loom dI5 and 6. DI5 will be a flex fuel sensor which will incorporate a 2k2 ohm pullup resistor to 5volts. For DI6 i want to make a switch to activate logging but unsure how to go about it, I came across this illustration in the pclink help file which is pretty self explanatory. What i dont understand is why it suggests a 14 volt pullup and not a 5 volt pullup like in the flex fuel example. In any case what do you suggest for my switch and the appropriate resistor to use. Also to activate datalogging on/off should i be using a momentary or toggle switch? Cheers Pat Quote Link to comment Share on other sites More sharing options...
Simon Posted January 24, 2013 Report Share Posted January 24, 2013 The Di has an internal pull up so if you want to have a switch to ground just turn the internal pullup on. This internal pullup is too strong for use with the flex fuel sensor which is why an external one is required. A toggle switch would be best for logging as then you will know when its on. Quote Link to comment Share on other sites More sharing options...
Patrick Posted January 28, 2013 Author Report Share Posted January 28, 2013 Thanks simon, this makes everything even more simple Quote Link to comment Share on other sites More sharing options...
Levon Luther Posted February 5, 2013 Report Share Posted February 5, 2013 Did this all work out for you? I am almost wondering if you have a subaru since I also used DI 5 & 6 for fun things... E85 Sensor and Knock Block. If you need any help holler, I got my ethanol sensor working almost flawlessly right now. Nothing is perfect so thats why almost flawless Cheers. Quote Link to comment Share on other sites More sharing options...
Patrick Posted February 10, 2013 Author Report Share Posted February 10, 2013 Hey Levon I have an r32 gtr, di 5 & 6 are in the expansion inputs on the nissan g4 boards. Almost finished and ready to send off to the tuner gets a bit overwhelming when you try to rush everything, modifying the car yourself quickly stops being enjoyable and becoming a burden. But either way it has to be done, i've been putting it off for far too long. Nice to see you got your car running well, i like the knock block setup you've included. I may go down this path in future when funds permit. I know i will miss being able to check my knock readings on the power fc, but armed with a wideband / ait / flex sensor / intrusive corrections i should have all areas of detonations covered . Cheers Quote Link to comment Share on other sites More sharing options...
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