Defect mangetometer 5883L

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knut_ny
Posts: 8
Joined: Fri Mar 30, 2012 3:56 am

Defect mangetometer 5883L

Post by knut_ny » Fri Mar 30, 2012 8:46 pm

I have bought 2 pcs HMC5883L magnetometers.
One works fine, the other is DOA.
I have done all I possibly can do (exept altering the board) to deterime that I have a defective board.
Visual (under microscope) inspection. Verified all connection lines point to point. It looks OK.
I do not have the equipment needed to resolder the board, nor to test the onboard, unmarked, capasitors.
Now I just need to know how we can make this right?

-----------------------
Already done:
Contact outside this forum. (direct copy of earlier messages):
1:
From: knut2307 To: ge-th2009 - Sent Date: 2012-03-29 16小時02分45秒
I have just added connection pins to the two compass modules.
One of then works fine, but the second one will not 'come to life'.
By first glance ,the circuit board seems to have a defect. I will investigate it further under a microscope and try to resolve the problem.
If there actually is a defect, I will notify you again...
THIS message for you information only. (I'll try to resolve this myself so i can get the board working)
Yours. 'my name' , electronics engeneer
------- Answer:
Dear Friend,
Thanks for your mail,
No problem,if there is any problem,just feel free to contact us,we'll do our best to help you out.
If you also have any problems,please enter into this forum to raise your questions on the "Problem Solving".
http://www.geeetech.com/forum/
Our technicians will do their best to help you to solve this problem..
If you have any problem,just feel free to contact us,we'll do whatever we can to help you.
Best Regards
2: From: knut2307 To: ge-th2009 Sent Date: 2012-03-30 06小時11分03秒
Hi again.
I have now examined the board under a microscope, and I can find nothing wrong.
..no broken lines, no short circuits and the capasitors seems to be connected OK.
all signal lines are OK from microcontroller to the magnetometer-chip.
(I cannot tell if the chip is connected properly to the PCB (because the connectors are hidden under this SM-chip)
I have tried 'ping' to all I2C-adresses, but the chip will not answer!
One of the boards answers OK to address 01E, but the other do not (which it should))
Summary:
I find the board not working (DOA) and I want to return it for a new one.
Now, I need to know if I shall remove the connector pins I soldered on ?
...and I need an shipping address where to send the faulty card.
...yours.. 'ny name', teacher of technology , Narvik, Norway
------- Answer:
Dear Friend,
Thanks for your mail,
Do you tell your problem to our technicians on our forum?
http://www.geeetech.com/forum/
Did they give you some guidence on how to test if it's defective?
Waiting for your reply,hope to help you to solve this problem.
Best Regards

knut_ny
Posts: 8
Joined: Fri Mar 30, 2012 3:56 am

Re: Defect mangetometer 5883L

Post by knut_ny » Wed Apr 04, 2012 5:40 pm

Photo of chip added.
Has the chip been overheated?

Image

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techsupport
Posts: 210
Joined: Sat Mar 03, 2012 2:32 pm

Re: Defect mangetometer 5883L

Post by techsupport » Fri Apr 06, 2012 3:59 pm

Hi friend;
It seeems like the other one is DOA as your description, our customer department has send another one.
Your real trustworthy partner in China!!
Email: forum@geeetech.com

knut_ny
Posts: 8
Joined: Fri Mar 30, 2012 3:56 am

Re: Defect mangetometer 5883L

Post by knut_ny » Wed Apr 18, 2012 6:17 am

A new one received today (apr.17) THX!
Text on top of chis is fully readable! (Far from chip shown above)
I'll test it as soon as I've finishes my project sending data via ordinary 'walkie-talkies' (using DTFM-chip 8880)

knut_ny
Posts: 8
Joined: Fri Mar 30, 2012 3:56 am

Re: Defect mangetometer 5883L

Post by knut_ny » Thu Apr 19, 2012 6:27 am

knut_ny wrote:A new one received today (apr.17) THX!
Text on top of chis is fully readable! (Far from chip shown above)
I'll test it as soon as I've finishes my project sending data via ordinary 'walkie-talkies' (using DTFM-chip 8880)
TESTED! Chip works great. Thanks again!

User avatar
jack
Posts: 77
Joined: Sat Mar 03, 2012 2:25 pm

Re: Defect mangetometer 5883L

Post by jack » Tue Apr 24, 2012 5:54 pm

That's great.Good luck with your project building

Jane Simmons
Posts: 1
Joined: Thu Jul 06, 2017 2:09 am

Re: Defect mangetometer 5883L

Post by Jane Simmons » Thu Jul 06, 2017 2:25 am

Great to hear your project worked out. I use an ordinary walkie talkie as well and have found the BaoFeng BF-888S Two Way Radio to be super useful for its price.

princetiger
Posts: 1
Joined: Sun May 02, 2021 4:05 am

Re: Defect mangetometer 5883L

Post by princetiger » Sun May 02, 2021 4:08 am

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