sti robot project (robotmeter project)-see post #461 if you want to test a setup out! - Page 17

Meridock · 06-19-2007, 12:00 PM

Quote:

Originally Posted by fullerton

Why not just buy a laser thermometer for the tires/brakes?

cause I like non-typical gadgets... also since there is an element of logging here. it would be nice to be able to data dump a single source for data. ie jump out take 8 readings (logged) and jump in.

sti robot · 06-20-2007, 05:31 AM

Oil temp sender found:
http://www.egauges.com/vdo_indS.asp?...0F_US&PN=R8958

$15
M18x1.5 thread (this is correct for a galley plug right...if not they have a bunch of other sizes...and adapters)
operates from 33-240 Ohms
can read 140-320F
Using a voltage divider with a 100 Ohm resistor I can get a reading from 1.241 to 3.529 Volts. This means I can get about 468 discrete steps between 140 and 320F or much more than 1 degree F of precision, which is about what we need.

W00t for long, boring teleconferences.

***Mack*** · 06-20-2007, 05:39 AM

I'll take $15 over a $260 gauge any day

Well, $115 or whatever for a multi-function gauge...

sti robot · 06-20-2007, 06:10 AM

^I will neither confirm nor deny pricing speculation

sti robot · 06-20-2007, 11:02 AM

I contacted autometer, cyberdyne and issopro and got responses either directing me to contact someone else or with charts showing the resistance to temperature relationships. rock!

***Mack*** · 06-20-2007, 11:12 AM

ask for a job, too?

sti robot · 06-21-2007, 08:56 AM

I should've but they aren't in atlanta and that's pretty much where we have a our heart set on living.

sti robot · 06-22-2007, 02:54 PM

progress:

-improved spacing on the reading/peak readouts
-blink/beep to warn implemented. Right now the whole screen blinks, which is annoying and epilleptic. I need to make this better. (what about if on peak an LED flashed instead??)
-turn on in oil temp mode and once warm switch to next mode in line (and possibly beep) has also been implemented.

-also good news. I updated to the new version of the IDE and flash software and it saved 2k of code space on the chip! (means we can cram more features on it

)

***Mack*** · 06-22-2007, 05:01 PM

i wish i knew how to do all this.

i was good at programming my TI-85 back in the day. I even had it show me intermediate steps in long formulas, so I could show my "work" on tests.

sti robot · 06-22-2007, 08:17 PM

This thing is easier than that....its basically a limited bit of C code.

View Poll Results: What should I work on next (choose multiples if you'd like)?
Lap timer	30	25.00%
Temp gauges (low temps: intake, intercooler, ambient, underhood, etc.)	59	49.17%
boost (w/peak, etc.)	55	45.83%
boost ref ic spray	33	27.50%
EGT/Oil temp - mess with off the shelf senders (egauges sells them by themselves)	45	37.50%
Something else	15	12.50%
Multiple Choice Poll. Voters: 120. You may not vote on this poll

06-20-2007, 05:31 AM	#162
sti robot Spec C Club Feedback Score: 3 reviews Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,804 IWSTI Addict since: Sep 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread Oil temp sender found: http://www.egauges.com/vdo_indS.asp?...0F_US&PN=R8958 $15 M18x1.5 thread (this is correct for a galley plug right...if not they have a bunch of other sizes...and adapters) operates from 33-240 Ohms can read 140-320F Using a voltage divider with a 100 Ohm resistor I can get a reading from 1.241 to 3.529 Volts. This means I can get about 468 discrete steps between 140 and 320F or much more than 1 degree F of precision, which is about what we need. W00t for long, boring teleconferences.

06-20-2007, 05:39 AM	#163
*Mack* Platinum Member Feedback Score: 14 reviews My Stuff: Subaru Parts Posts: 18,401 IWSTI Addict since: Oct 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread I'll take $15 over a $260 gauge any day Well, $115 or whatever for a multi-function gauge...

06-20-2007, 06:10 AM	#164
sti robot Spec C Club Feedback Score: 3 reviews Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,804 IWSTI Addict since: Sep 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread ^I will neither confirm nor deny pricing speculation

06-20-2007, 11:02 AM	#165
sti robot Spec C Club Feedback Score: 3 reviews Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,804 IWSTI Addict since: Sep 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread I contacted autometer, cyberdyne and issopro and got responses either directing me to contact someone else or with charts showing the resistance to temperature relationships. rock!

06-20-2007, 11:12 AM	#166
*Mack* Platinum Member Feedback Score: 14 reviews My Stuff: Subaru Parts Posts: 18,401 IWSTI Addict since: Oct 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread ask for a job, too?

06-21-2007, 08:56 AM	#167
sti robot Spec C Club Feedback Score: 3 reviews Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,804 IWSTI Addict since: Sep 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread I should've but they aren't in atlanta and that's pretty much where we have a our heart set on living.

06-22-2007, 02:54 PM	#168
sti robot Spec C Club Feedback Score: 3 reviews Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,804 IWSTI Addict since: Sep 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread progress: -improved spacing on the reading/peak readouts -blink/beep to warn implemented. Right now the whole screen blinks, which is annoying and epilleptic. I need to make this better. (what about if on peak an LED flashed instead??) -turn on in oil temp mode and once warm switch to next mode in line (and possibly beep) has also been implemented. -also good news. I updated to the new version of the IDE and flash software and it saved 2k of code space on the chip! (means we can cram more features on it ) Last edited by sti robot; 06-22-2007 at 03:05 PM..

06-22-2007, 05:01 PM	#169
*Mack* Platinum Member Feedback Score: 14 reviews My Stuff: Subaru Parts Posts: 18,401 IWSTI Addict since: Oct 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread i wish i knew how to do all this. i was good at programming my TI-85 back in the day. I even had it show me intermediate steps in long formulas, so I could show my "work" on tests.

06-22-2007, 08:17 PM	#170
sti robot Spec C Club Feedback Score: 3 reviews Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,804 IWSTI Addict since: Sep 2005	Re: the sti robot and his project accelerometer/thermometer/boost/kitchen sink thread This thing is easier than that....its basically a limited bit of C code.

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