Custom USB tyre pressure monitoring interface - Page 28

-Stomp- · 03-21-2008, 06:57 PM

-Dejan- -> glad to hear that you will produce some boards again, hope you this time will give me the chance to buy one... Not like last time...

_Dejan_ · 03-21-2008, 07:01 PM

Quote: Originally Posted by -Stomp-

-Dejan- -> glad to hear that you will produce some boards again, hope you this time will give me the chance to buy one... Not like last time...

Sorry but last 8 board has been sold in two days. Now you will have more time

Bye, _Dejan_

MarcelP · 03-22-2008, 03:17 AM

As is called the manufacturer of that receiver and sensors?? I can look for in Germany where I those buy can, must only know as the kit am called.

DeltaBi · 03-22-2008, 03:35 AM

Quote: Originally Posted by MarcelP

As is called the manufacturer of that receiver and sensors?? I can look for in Germany where I those buy can, must only know as the kit am called.

I believe you should read the very first posts of this thread!
A few weeks ago I saw a german web site that was selling the TPMS kit but right now I can't remember the name.

Glitchinthesyst · 03-22-2008, 12:39 PM

Quote: Originally Posted by MarcelP

As is called the manufacturer of that receiver and sensors?? I can look for in Germany where I those buy can, must only know as the kit am called.

http://www.carguard.de/index.php?aid=178

&

http://www.tuningdirekt.com/catalog/.../cName/komfort

These sites look like they are carrying the 3rd Eye systems, although they appear to have been rebranded/boxed for the German market.
It may be worthwhile giving them a telephone call before ordering to confirm that they were sourced from 3rd eye in malaysia http://www.the3rdeye.com.my/fcom.html.

However both these sites do appear to be on the expensive side @ 300 Euro ($470/£237) + shipping, compared to the wholesale price, some mark-up even with distribution costs!

Glitch

silvi4000 · 03-22-2008, 02:56 PM

this is a very interesting idea.

Im curious how does the sensors get power?

It would suck to have to take your car to the tire shop every time the battery runs out on the sensors.

2k1Toaster · 03-22-2008, 03:22 PM

Quote: Originally Posted by silvi4000

this is a very interesting idea.

Im curious how does the sensors get power?

It would suck to have to take your car to the tire shop every time the battery runs out on the sensors.

They do use a battery. Usually a little watch battery. But by using cmos chips and very very very low standpower power, the batteries last for years. But when the battery dies, yes you have to go and replace it by taking the tire off. This is true in any wireless tire pressure system, even stock ones.

However there was a guy in our university who for a senior design project successfully made a pressure sender with a small power generator that uses the wheels rotation to generate energy inside the car and charges the battery. But I dont think any marketable sensors do this.

silvi4000 · 03-22-2008, 04:55 PM

Quote: Originally Posted by 2k1Toaster

They do use a battery. Usually a little watch battery. But by using cmos chips and very very very low standpower power, the batteries last for years. But when the battery dies, yes you have to go and replace it by taking the tire off. This is true in any wireless tire pressure system, even stock ones.

However there was a guy in our university who for a senior design project successfully made a pressure sender with a small power generator that uses the wheels rotation to generate energy inside the car and charges the battery. But I dont think any marketable sensors do this.

Thats I was thinking, having a small off center load to generate power under speed changes. I guess that would make the sensor bigger and more expensive.

Blue ZX3 · 03-22-2008, 06:50 PM

If the batteries last for years then who would care, just replace them when you replace the tires..

juve021 · 03-22-2008, 08:03 PM

Robby, Dejan or anyone else...

So I have built the interface and paired sensors and I have initial values for the sensors but today I went to adjust my tire air pressures and the values using the TPMS Doctor, did not change and have not changed at all! Whats going on? Why isn't it refreshing with new values?

mrbean_phillip · 03-22-2008, 08:14 PM

How much did you change the pressure by?

Should be approximately 0.28bar (28kpa)

If your system detects new values if you clear the data in the PIC (by using the TPMS Doctor), it works.

Install it in your car, and take a drive - it will start to read increasing tire pressures, and higher temps.

Enjoy.

juve021 · 03-22-2008, 09:19 PM

Quote: Originally Posted by mrbean_phillip

How much did you change the pressure by?

Should be approximately 0.28bar (28kpa)

If your system detects new values if you clear the data in the PIC (by using the TPMS Doctor), it works.

Install it in your car, and take a drive - it will start to read increasing tire pressures, and higher temps.

Enjoy.

I changed the psi by like 8-10 psi and the values didn't change. I performed the data reset like Robby mentioned and it cleared all the readings from the PIC but now no new readings are shown. Its like it doesn't refresh the values of the sensor.

Robby BMW · 03-23-2008, 11:00 AM

Are you sure that you didn't performed a "Master Reset"?
Remember, the "Data Reset" deletes the latest data received from the sensors, but the "Master Reset" also removes any sensors associations.

HiJackZX1 · 03-23-2008, 02:29 PM

Quote: Originally Posted by silvi4000

Thats I was thinking, having a small off center load to generate power under speed changes. I guess that would make the sensor bigger and more expensive.

I think they last 5 to 7 years

juve021 · 03-23-2008, 02:52 PM

Quote: Originally Posted by Robby BMW

Are you sure that you didn't performed a "Master Reset"?
Remember, the "Data Reset" deletes the latest data received from the sensors, but the "Master Reset" also removes any sensors associations.

Yup I'm sure, only a data reset

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