Ice Tube producing wrong voltage at D3

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Myrtana
 
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Ice Tube producing wrong voltage at D3

Post by Myrtana »

I went back and checked the placement and orientation of all the components on the PCB but I just can't seem to find the problem. The voltage between the grounding tab of the voltage reg and D3 reads 9VDC

adafruit
 
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Re: Ice Tube producing wrong voltage at D3

Post by adafruit »

whats the voltage supposed to be? :)

Myrtana
 
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Re: Ice Tube producing wrong voltage at D3

Post by Myrtana »

at least 40 but not over 75 is my understanding

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stinkbutt
 
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Re: Ice Tube producing wrong voltage at D3

Post by stinkbutt »

Myrtana wrote:at least 40 but not over 75 is my understanding
So you're measuring the output of the boost converter. I really have no idea what the issue is, but the smart money says some time in the next 12 hours either adafruit or arduwino is going to post, asking you to post pictures of your assembly.

I'm going to ask just one question though, and it's insulting stupid, but I'm going to asking it anyway, so I apologize in advance for asking, but: You have plugged in your ATMega168, right?

Unless the answer is "no", I'd post pics of the assembly, top and bottom.

Myrtana
 
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Re: Ice Tube producing wrong voltage at D3

Post by Myrtana »

well the knotch on the IC matches the silkscreen so I assume it is installed right.
http://img196.imageshack.us/img196/5633/cimg0468p.jpg

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stinkbutt
 
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Re: Ice Tube producing wrong voltage at D3

Post by stinkbutt »

Myrtana wrote:well the knotch on the IC matches the silkscreen so I assume it is installed right.
http://img196.imageshack.us/img196/5633/cimg0468p.jpg
Everything looks to me like it's in the right place with no pieces left over. What about the underside?

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adafruit_support_bill
 
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Re: Ice Tube producing wrong voltage at D3

Post by adafruit_support_bill »

the smart money says some time in the next 12 hours either adafruit or arduwino is going to post, asking you to post pictures of your assembly.
:D Good call stinkbutt!

Myrtana: Nice clear image of the front! Another one like that of the back will let us check out the soldering.

Myrtana
 
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Re: Ice Tube producing wrong voltage at D3

Post by Myrtana »


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adafruit_support_bill
 
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Re: Ice Tube producing wrong voltage at D3

Post by adafruit_support_bill »

Soldering looks OK. Adafruit is currently at the HOPE conference. Maybe Lady Ada will have some diagnostic advice when she gets back.

Myrtana
 
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Re: Ice Tube producing wrong voltage at D3

Post by Myrtana »

Thanks for the advice so far, guys.

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Re: Ice Tube producing wrong voltage at D3

Post by adafruit »

does it beep?

Myrtana
 
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Re: Ice Tube producing wrong voltage at D3

Post by Myrtana »

It beeped during beep test but not at this point.

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stinkbutt
 
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Re: Ice Tube producing wrong voltage at D3

Post by stinkbutt »

It's supposed to beep on power up every time.

Myrtana
 
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Re: Ice Tube producing wrong voltage at D3

Post by Myrtana »

Alright, then. It doesn't beep. What should I do?

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Re: Ice Tube producing wrong voltage at D3

Post by adafruit »

the 100K resisitor was instead placed as a 10K

swap them and you'll find it working again :)

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