Ublox module , help needed! - Page 8

Laidback · 06-13-2005, 04:18 PM

Quote: Originally Posted by nl4jy

laidback, do you have the RS part number for the max233? I tried looking and they don't seem to have anything.

Just search for max233. UK website says 655-307. Go to Maxims website and order a sample, for nothing!

nl4jy · 06-13-2005, 04:30 PM

I request the max233cpp. Can't find the max233cpe. Hope it's the same type you guys use.

RoyN · 06-13-2005, 04:57 PM

I found MAX233CPP and MAX233ACPP...

Also, how does one go about ordeding sample? at http://shop.maxim-ic.com/ I found the 1-5 pricing to be $5.40 (I dont mind paying) but is there another way to get these?

jcdillin · 06-13-2005, 05:39 PM

both of those will work just fine

I had to work all weekend, so I havent had a chance to start on the board, but I was thinking of just using a right angle PCB mount DB9, that way you could use standard serial cables and extensions

But I am going to order the module tonight and get working on it. I really should have one of the modules so I can make sure everything fits good, kind of hard to make the board blind.

Laidback · 06-13-2005, 06:11 PM

Quote: Originally Posted by RoyN

I found MAX233CPP and MAX233ACPP...

Also, how does one go about ordeding sample? at http://shop.maxim-ic.com/ I found the 1-5 pricing to be $5.40 (I dont mind paying) but is there another way to get these?

Request samples near the bottom of this page http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1798

nl4jy · 06-15-2005, 11:18 AM

laidback, what ever happens to the pin to pin chart? I should be receiving the max chip this week and planning to sodur the whole thing this weekend.

Laidback · 06-15-2005, 11:43 AM

I didn't find time....

RoyN · 06-15-2005, 03:31 PM

Chill mate, most of us have real jobs, families, school, etc... we dont live for our carpcs (some of us do, though

)

Ladiback will come through with it, I'm sure!

nl4jy · 06-15-2005, 04:21 PM

Oh, did I sound rude? I'm sorry. *sulks*
I didn't mean to rush Laidback, just a friendly reminder ^_^

Roy, seems like you and me is on the same stage of development. Just a question on the gyro. Which side is up? LOL... I'm looking at it in my hand and don't know if the orientation matters when placing it on the board. Does it has to be position in a certain direction?

Laidback · 06-15-2005, 04:37 PM

Try this...

Laidback · 06-15-2005, 05:28 PM

Quote: Originally Posted by nl4jy

Just a question on the gyro. Which side is up? LOL... I'm looking at it in my hand and don't know if the orientation matters when placing it on the board. Does it has to be position in a certain direction?

Yeah, I think so. Well, the pin end is the bottom(

) and afaik it needs to go with the 4 pin row towards the front of the car.

nl4jy · 06-16-2005, 03:26 PM

Quote: Originally Posted by Laidback

Try this...

thank you sooooooooooooooooo much, I think I understand most of it. Just a few quick question just to make sure.

1. anything on the same row is connected to each other right? So is row 15 means to connect gyro to ground and to pin 10 on UBlox?

2. what does the loopback mean? I'm not good with electronic and have no idea what's loopback.

3. what's the com2 for? I thought you only need 1 com port but you listed 2 com ports connection. I can disregard com2 right?

Other than these 3 uncertainties, I think I understand everything else.

Again, thank you sooooooooooooooooooooooooo much for doing this.

Laidback · 06-16-2005, 03:53 PM

1, Correct & correct.
2, With Loop, I just mean it's connected to another pin on itself, i.e. on the Max233 you need to connect pin 11 to pin 15.
3, Yes, you can disregard the Com2 column.

Mine's been in the car for nearly a week now and it's great! There are plenty of tunnels in Madrid, some with bends and/or junctions and It's performed pretty much flawlessly.

Edit: Oh, and I haven't connected the forward/backward wire yet. Just don't do that much reversing anymore!

nl4jy · 06-27-2005, 04:10 PM

Okay, I think I have everything wire up (almost). Now just waiting for that stupid 2mm pitch connector to arrive.

I might install the backup battery while I wait. So how is the battery supposed to be connected? 5v battery to battery line and ground?

Oh, and the reverse line is just connects to the backup light power line right? If it detects voltage, it consider reverse. Right?

Laidback · 06-27-2005, 05:39 PM

Quote: Originally Posted by nl4jy

Okay, I think I have everything wire up (almost). Now just waiting for that stupid 2mm pitch connector to arrive.

I might install the backup battery while I wait. So how is the battery supposed to be connected? 5v battery to battery line and ground?

I wouldn't think so but I'm not sure, I don't have one at the moment.

Quote: Originally Posted by nl4jy

Oh, and the reverse line is just connects to the backup light power line right? If it detects voltage, it consider reverse. Right?

No, it needs to go to ground when in reverse, I still haven't done this either.