Custom USB tyre pressure monitoring interface - Page 35

HiJackZX1 · 05-12-2008, 08:20 PM

Quote: Originally Posted by rgarjr

Yeah JP3 is your ground and there's 2 pins. Which method are you gonna use, cutting the receiver part or pin method

I have cut the board in half.... i couldnt deal with having to run more electrical wires.... So technically jumper 3 isnt really 2 pins, just a ground split into two. Im concerned about jumper 1 though.... there is a small diode or what ever you call it. It says 002 on the diode..... Do I pull this off then soder jumper 1 to both to make it one?

rgarjr · 05-12-2008, 08:41 PM

MrBean was kind enough to snap some close up shots of the board
pic

I think you're talking about that small resistor on there. Yeah just leave that little guy there and solder your pin to the pad of it, nearest the cut.

LYHTSPD · 05-12-2008, 10:49 PM

Quote: Originally Posted by HiJackZX1

PS: Thanks LYHTSPD, I got the 3rd eye kit in the mail today!!!!!!!!!!

Nice!

WuNgUn · 05-12-2008, 11:58 PM

Quote: Originally Posted by HiJackZX1

I know this is maybe a dumb question, but on the board is jumper 3 supposed to be together? Like soder wise? I noticed in Robby's picture of the board its together.... and the one I recieved from Jueve is also together...... Is this correct? Also what is the easiest way to sepearte what I need from the third eye kit? Aslo when sodering jumper 1, do I have to remove that tiny diode or soder with it on there?

PS: Thanks LYHTSPD, I got the 3rd eye kit in the mail today!!!!!!!!!!

I wondered the same thing...when I tested it with a meter, it was showing continuity, which concerned me a little! But after looking at the schematic, all was well...

Robby BMW · 05-13-2008, 02:15 AM

Quote: Originally Posted by HiJackZX1

I have cut the board in half.... i couldnt deal with having to run more electrical wires.... So technically jumper 3 isnt really 2 pins, just a ground split into two. Im concerned about jumper 1 though.... there is a small diode or what ever you call it. It says 002 on the diode..... Do I pull this off then soder jumper 1 to both to make it one?

JP3 is double to ensure a better mechanical fastening.
You can remove the small resistor and solder JP1 on both pads like in the picture below:

lez · 05-13-2008, 05:07 AM

Quote: Originally Posted by HiJackZX1

soder

grrrrrrrrrrrr

wiki is your friend, it's got an L in it, pronounced SOLD - ER

I blame Norm and his New Yankee workshop for this, I've heard him soddering so many times.............

HiJackZX1 · 05-13-2008, 06:38 AM

*slaps LEZ in the back of the head* This isnt english class..... I spelled it the way I say it, lol......

Anyways, did I have to put the pins through the holes? I really wasnt able to get them through so I simply soldered (are you happy LEZ) them to the board without sticking through the holes. Jumper 1 I soldered to the end of the pad with the resistor, I was really scared of damaging the board. Jumper 2, I simply scrapped the green top layer off then soldered to the copper (was this right). When I insalled it into the PC it said, "New Human Interface Device Installed". So I guess I did it correctly, or will it install even if I did it wrong?

Enforcer · 05-13-2008, 06:53 AM

Quote: Originally Posted by lez

I've heard him soddering so many times.............

Gay?

Robby BMW · 05-13-2008, 08:11 AM

http://www.urbandictionary.com/defin...term=Soddering

LYHTSPD · 05-13-2008, 08:14 AM

Quote: Originally Posted by HiJackZX1

Anyways, did I have to put the pins through the holes? I really wasnt able to get them through so I simply soldered (are you happy LEZ) them to the board without sticking through the holes. Jumper 1 I soldered to the end of the pad with the resistor, I was really scared of damaging the board. Jumper 2, I simply scrapped the green top layer off then soldered to the copper (was this right). When I insalled it into the PC it said, "New Human Interface Device Installed". So I guess I did it correctly, or will it install even if I did it wrong?

I had a hard time getting the J3 header pins through the holes, but eventually I got them through. As long as there are making an electrical connection you should be ok. It may not be as physically strong connection though. I would keep an eye on it and expect to re-solder it at some point.

What you did with J2 is fine. That is really the only way you can make that connection. I left the resistor on J1 as well on my boards.

Robby BMW · 05-13-2008, 08:39 AM

Inserting the JP3 header pins through the holes ensures better mechanical fastening, but the important thing is to guarantee a good electrical connection.

To connect JP1, the small resistor can be removed or not, it is irrelevant to the proper functioning of the device.

The only way to connect is to JP2 is to scrape a small part of the green top layer (solder mask) off then soldered the header pin on the copper

Robby BMW · 05-13-2008, 08:48 AM

Quote: Originally Posted by HiJackZX1

When I insalled it into the PC it said, "New Human Interface Device Installed". So I guess I did it correctly, or will it install even if I did it wrong?

It only means that the USB interface (the PIC) is working.
The only way to know if also the receiver is working is to plug an oscilloscope probe to JP2 in order to see if some signal is incoming or, more simply, perform the learnig procedure as largely described in this thread.