Defective product exchange

Forum Administrative - NOT PROJECT OR "HELP"

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
joben
 
Posts: 1
Joined: Thu Mar 06, 2014 3:51 pm

Defective product exchange

Post by joben »

I purchased a raspberry pi with invoice # 440727 and it is unable to connect to a network via its RJ45 connector. Other raspberry pi's are able to connect fine using all the same components (sd cards, cords, router, etc).

It appears to be a defective device.

What process do you have for exchanging defective products?

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Defective product exchange

Post by adafruit_support_rick »

Please email [email protected] with a link to this thread for a replacement Pi.

User avatar
johngiles
 
Posts: 7
Joined: Thu Mar 13, 2014 7:43 pm

Re: Defective product exchange

Post by johngiles »

I just purchased an Ultimate GPS Breakout v3, and have wired it to my Arduino as it shows in your tutorial. When I run the echo program, I get nothing, and the LED does not behave as the tutorial says it should. I can only assume it's defective, as the wiring is dirt simple, and I've re-checked my work several times. Do you want me to return it, or is there something additional I can do to trouble shoot?

Sincerely,
John Giles

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Defective product exchange

Post by adafruit_support_rick »

Please post pictures showing your soldering and your wiring.

User avatar
johngiles
 
Posts: 7
Joined: Thu Mar 13, 2014 7:43 pm

Re: Defective product exchange

Post by johngiles »

OK, dumb question, but how do you upload an image?

Thanks,
John

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Defective product exchange

Post by adafruit_support_mike »

Click on the "Upload Attachment" tab below the box where you compose a reply. That should bring up a file browser.

The forum has limits on file sizes, but 800x600 images usually hit the sweet spot between detail and loadability.

User avatar
johngiles
 
Posts: 7
Joined: Thu Mar 13, 2014 7:43 pm

Re: Defective product exchange

Post by johngiles »

Here's a pic of the GPS unit wired up. Sorry that I'm using black and dark blue wires in the same pic, but I'm low on wires.
Attachments
WIN_20140313_203815.JPG
WIN_20140313_203815.JPG (139.82 KiB) Viewed 452 times

User avatar
johngiles
 
Posts: 7
Joined: Thu Mar 13, 2014 7:43 pm

Re: Defective product exchange

Post by johngiles »

Here's my soldering handywork. I actually used a solder sucker and re-did it because I wanted to eliminate this as a possible cause. Sorry the pic isn't that good, but it's hard to take a pic of something that small with my crappy cam.
Attachments
WIN_20140314_211751.JPG
WIN_20140314_211751.JPG (25.25 KiB) Viewed 452 times

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Defective product exchange

Post by adafruit_support_mike »

Check the voltage between the VCC and GND pins on the breakout itself. If it's getting 5v and there's no response from the LED, we can call it dead.

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Defective product exchange

Post by adafruit_support_rick »

Yeah - it's tough to see those solders, but they do look like they might be a bit blobby. But the solder should flow completely over the pad and up the pin. The surface should be concave, like this:
Image

If yours don't look like that, try re-heating them. Make sure to heat both the pad and pin evenly.

User avatar
johngiles
 
Posts: 7
Joined: Thu Mar 13, 2014 7:43 pm

Re: Defective product exchange

Post by johngiles »

Thanks for the heads up on the solder joints. I redid them and the solder soaked in completely, so I'm pretty confident that I have a good connection at this point. It seems like it's starting to come around, but the echo program is returning a fair amount of garbage data:

¦rº’b²±,,,,0.00,0.00,060180,,,N*4F
$GPVTG,0.00,T,,M,0.00,N,0.00ÿ º’bbbbŽ b‚bbbj±,M,,*46
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,000“HÉ

Is this kind of thing normal?

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Defective product exchange

Post by adafruit_support_rick »

Try some different jumpers and.or different breadboard locations. That looks like a dodgy connection

User avatar
johngiles
 
Posts: 7
Joined: Thu Mar 13, 2014 7:43 pm

Re: Defective product exchange

Post by johngiles »

I've replaced the transmit/receive wires with a new pair of wires. They're a pair of twisted wires that I scavenged from an old piece of cat5. I don't know if that's a sufficient gauge of wire, so please let me know if there's something better I should be using. Anyhow, the garbage data hasn't gone away, so I'm looking for suggestions. Here's a sample of what I get:

$GPRMC,001319.159,V,,,,,0.00,0.00,060180,,,N,,,N*4F
$GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,001326.159,,,BANNED%Õ
±001326.159,V,,,,,0.00,0.00,060180,,,N*49
$GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,001327.159,,,,,0,0,,,M,,M,,*42
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,1,1,00*79
$GPRMC,001327.159,V,,,,,0.00,0.00,060180,,,N*48
$GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
ä

QÎÞ$GPGGA,001545.231,,,,,0,0,,,M,,M,,*4D
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001545.231,V,,,,,0.00,0.00,060180,,,N*47
$GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,001548.231,,,,,0,0,,,M,,M,,*40
üSÎ ‚br±0.00,K,N*32
BANNED

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Defective product exchange

Post by adafruit_support_rick »

This is a tough one. Going back to your picture, it looks like you are connected to digital 0 and 1. Are you using the blank sketch, and reading the GPS output on the serial monitor?

If you are running a regular sketch, instead of the blank sketch, you can't connect to those pins while you have any kind of serial print statements in the code.

Chiron
 
Posts: 1
Joined: Fri Mar 21, 2014 3:26 pm

Re: Defective product exchange

Post by Chiron »

I recently received an order to recreate the Flora Wristband with the LSM 330. The parts were assembled in a night class with the instructor and after correcting the tutorial code it appeared to work for a few seconds. Each time the readings stopped, we discovered the port was shut down. One of the times we went to unplug from the computer we accidentally touched the FLORA board and it was very hot to touch in one location near the red blinkly light. Only half of the pixel ring light up as well. We think the FLORA board resistor may be defective. We can no longer get any of the circuits that were attached to the FLORA to work on any of the other boards (hello world and blink programs on the UNO). Between the Instructors, Engineers and Programmers at class; we can't seem to fix it and it appears to be a hardware problem. Electrically, the FLORA was only attached to the computer or the battery we ordered from Adafruit. Please advise.

Locked
Please be positive and constructive with your questions and comments.

Return to “Administrative (closed)”