mikes603

Made this system (I'm an EE) for my car, and other HPDE guys I know. It's to know when your tires are up to operating temp. I thought I'd try and get some feedback here to see what people thought.

Here are the features of the kit:

• Four IR sensors
• Narrow 10deg sensor field of view for sampling tire sections
• Large 1 1/12 by 2 1/2 inch display
• Weather resistant; sensors can get wet without being ruined.
• Removable lens cap if they need cleaning or replacement
• Extra protective lenses
• Does both fahrenheit and celsius
• You can adjust the emissivity of each sensor (different materials reflect light at differing rates)
• Quality harnesses
• DC supply is designed for difficult automotive environments with large current dumps and voltage spikes

The installation is straight forward. You drill a small hole in the wheel arch for the sensor to poke through. Top center is best to account for changes in tire angle.

I'm aware 3 sensors per tire would be needed per corner to monitor camber load. But that's another kit--one with no display and CAN support for data-logging--and not this one, which is aimed at being sub $1k.

If anyone is interested just send me a PM or email me at mikes at ntisys.com

ShellDude

iTrader: (12)

You can pull temp already via obd ... There's just no guarantee on order.

Regardless, very nice!

rickeo

iTrader: (1)

Tire temp through OBD? Maybe I'm missing something but how is that done?

9krpmrx8

iTrader: (46)

Science.

ShellDude

iTrader: (12)

It's on the can bus... Race car would need tpms

TANKERG

https://www.rx8club.com/showthread.php?t=250627

ShellDude

iTrader: (12)

The original project where I reverse engineered the data on the S1 bus:

Paimon held out on me back then when he did it with his S2 experiment.

Loki

iTrader: (1)

That's pretty cool (the OP's device). When you say sub-1k, how far sub are we talking?

The TMPS thing is cool, but I'd want to know tread temperature, which this wouldn't give right?

mikes603

Right, this gives tire tread surface temp. And over a narrow section of the tire (inside,outside or center) since it has a very narrow 10deg fov sensor. Whereas the OEM sensors give tire air temp I believe (?)

I cant publicly state cost since I'm in the process of partnering with a distributor that will set MSRP. If you're interested in one send me a PM or email and I'll get you one at just above cost.

ShellDude

iTrader: (12)

Yup ... I'd classify the obd data as internal tire air temperature.

Your stuff is going far beyond that... I deal with hand grenades... This thread is laser guided.

TeamRX8

iTrader: (25)

OP, pretty sure vendor status is req'd here for commercial thread posting

etzilon

Cool idea. I thought of prototyping something like this just for fun. I would do 3 sensors per wheel, though, and output via CANBUS so most loggers can read the data.