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Minty-boost USB connector pins 2 and 3 dead
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Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 2:17 am

On initial test of my Minty Boost USB connector the outer pins read 4.9 volts, but far right pin and pins 2 or 3 are zero. I have checked my solder joints and reheated some, but no joy. Which components could cause this problem?
I am posting pics of front and back.
Pics will not post. Says invalid. Why?

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Re: Minty-boost USB connector pins 2 and 3 dead

by adafruit_support_bill on Tue Aug 12, 2014 6:30 am

Pics will not post. Says invalid. Why?

There is a 1 meg limit. If you size your .jpg files to 800x600 you should have no problems.

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 10:04 am

Thanks. I'll edit them and repost.
Ray

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 1:15 pm

Here are pics of the board front and back. I got a better soldering gun and reheated all the joints till they flowed. Still no joy on the 2 and 3 pins.

Tried posting resized pics. Still said file was invalid. What am I doing wrong. Is there a live person to call?

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Re: Minty-boost USB connector pins 2 and 3 dead

by franklin97355 on Tue Aug 12, 2014 1:43 pm

What format are your pictures? If you can't get them here you can post them on photobucket and link here.

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 2:01 pm

They are just simple jpegs taken with my Android phone. I reduced the camera's resolution for this one. I will try to upload.
Ray

Nope. "the image file you tried to upload is invalid"
It's way smaller than 1 meg
Last edited by rccpilot on Tue Aug 12, 2014 2:14 pm, edited 2 times in total.

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 2:03 pm

I have a drop box account. Who would I send the email to?

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Re: Minty-boost USB connector pins 2 and 3 dead

by adafruit_support_bill on Tue Aug 12, 2014 2:14 pm

You can email support@adafruit.com with a link to your photos.
Include a link to this thread so it will get forwarded appropriately.

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 3:06 pm

I will email the pics. I am new to forums, obviously. How do I include a link to a thread?
Sorry for all the newbie hassle.
Ray

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Re: Minty-boost USB connector pins 2 and 3 dead

by adafruit_support_bill on Tue Aug 12, 2014 3:09 pm

How do I include a link to a thread?

Copy and paste the url from your browser like this: viewtopic.php?f=15&t=58443

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 3:39 pm

Just emailed support@adafruit.com with pics and copied link to the thread. Thanks for your patience.
Ray

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Re: Minty-boost USB connector pins 2 and 3 dead

by adafruit_support_bill on Tue Aug 12, 2014 4:47 pm

I don't see any obvious problems in the photos. What voltage do you measure if you touch the probes to opposite ends of R1? Repeat the same measurement for R2, R3 and R4.
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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 5:41 pm

R1 is about 0.8
R2 is about 1.25
R3 is about 0.8
R4 is about 1.25
I have an analog meter. This is on the 2.5 DC volt scale.
R4 seems to have the reverse polarity from the other 3. I have to switch leads to get a positive result.
The outer two pins of the USB connector still show just under 5 volts.

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Re: Minty-boost USB connector pins 2 and 3 dead

by adafruit_support_bill on Tue Aug 12, 2014 7:31 pm

There is either something wrong with the measurements or something here is violating the laws of physics. The voltages from R1 plus R2 must equal the voltages from R3 plus R4. So far, so good. But they must also equal the voltage between the two outer pins.

1.25v + 0.8v = 2.05v which is not very close to 5v.

I have an analog meter. This is on the 2.5 DC volt scale.

What scale were you using to measure between the two outer pins?
What do you get across the resistors if you use that same scale for the measurement?

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Re: Minty-boost USB connector pins 2 and 3 dead

by rccpilot on Tue Aug 12, 2014 8:31 pm

I think there's something wrong with my meter. Now I am getting a reading from the 2 and 3 pins. I apologize for my ignorance and inaccurate equipment. I am a rank beginner with electronics (that's the point of this project after all).
Let me complete the soldering and actually test the project with a device. Perhaps all will be well. If not I will post again.
Thanks for your time and patience with a novice.
Ray

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Please be positive and constructive with your questions and comments.