Electronics > Electronics

Axon 2 problems

(1/2) > >>

Sherlock-holmes2:
I was putting my Axon 2 on my computer (Because it's grounded, right?), without insulation, and my father told me that I was shorting it by doing so. From then on I put it on my static proof bag to program it (AVRISP MKII), but it doesn't turn on the marquee when I turn it on. Is it fried? If not, what is it and how can I fix it? Please Help!
P.S. For future reference, does the Axon 2 carry a warranty? If so, it would give me a sense of security.

newInRobotics:

--- Quote from: Sherlock-holmes2 on October 02, 2012, 01:43:59 PM ---I was putting my Axon 2 on my computer (Because it's grounded, right?), [...]
--- End quote ---
Computer case should be grounded but not necessarily it is.


--- Quote from: Sherlock-holmes2 on October 02, 2012, 01:43:59 PM ---[...] and my father told me that I was shorting it by doing so.
--- End quote ---
It's not that You shorting it, but rather electrostatic charge is acting upon it, which might cause damage.


--- Quote from: Sherlock-holmes2 on October 02, 2012, 01:43:59 PM ---From then on I put it on my static proof bag to program it (AVRISP MKII), [...]
--- End quote ---
When Axon is connected to programmer, it gets grounded via USB and computer PSU, so electrostatic charge does not accumulate. Electrostatic bag is used for storage only. I must add, that in my life I have resembled many computers without wearing grounding strap and never I had any issues with parts not working after handling them, from this I make assumption that circuit boards are not that sensitive. I might be wrong though.


--- Quote from: Sherlock-holmes2 on October 02, 2012, 01:43:59 PM ---but it doesn't turn on the marquee when I turn it on. Is it fried? If not, what is it and how can I fix it?
--- End quote ---
Did it work before, or was it the first time You tried powering it on? Did You power it from external power supply, or via programmer? Does Your programmer have any indication lights light indicating that it works properly?

Soeren:
Hi,


--- Quote from: newInRobotics on October 03, 2012, 04:19:21 AM ---[...] I must add, that in my life I have resembled many computers without wearing grounding strap and never I had any issues with parts not working after handling them, from this I make assumption that circuit boards are not that sensitive. I might be wrong though.

--- End quote ---
Bad boy, go to your room (oh, you're there already)  :P

Please review your assumption on the subject of ESD.
In most instances ESD will not show instantly and it may show up much later - months or years, as ESD will typically deteriorate some junctions to a point where they are not totally burned, but fairly weakened  - like eg. a semiconductor trace that is reduced to say 20% of what it should be, so next time it's working hard, it may blow or it may take a number of sessions before it gives up.

Problem is that you cannot see ESD, so it's prudent to do as much as you can to avoid it.
The higher the impedance, the greater the risk, but even a 2N3055 can suffer.

Gertlex:

--- Quote from: Soeren on October 04, 2012, 05:33:47 PM ---Hi,


--- Quote from: newInRobotics on October 03, 2012, 04:19:21 AM ---[...] I must add, that in my life I have resembled many computers without wearing grounding strap and never I had any issues with parts not working after handling them, from this I make assumption that circuit boards are not that sensitive. I might be wrong though.

--- End quote ---
Bad boy, go to your room (oh, you're there already)  :P

Please review your assumption on the subject of ESD.
In most instances ESD will not show instantly and it may show up much later - months or years, as ESD will typically deteriorate some junctions to a point where they are not totally burned, but fairly weakened  - like eg. a semiconductor trace that is reduced to say 20% of what it should be, so next time it's working hard, it may blow or it may take a number of sessions before it gives up.

Problem is that you cannot see ESD, so it's prudent to do as much as you can to avoid it.
The higher the impedance, the greater the risk, but even a 2N3055 can suffer.

--- End quote ---

I absolutely believe you, but for what it's worth, my electronics course in undergrad mentioned nothing of non-instant damage. Perhaps it's OK that I've forgotten all the details of that class...

Admin:

--- Quote from: Sherlock-holmes2 on October 02, 2012, 01:43:59 PM ---I was putting my Axon 2 on my computer (Because it's grounded, right?), without insulation, and my father told me that I was shorting it by doing so. From then on I put it on my static proof bag to program it (AVRISP MKII), but it doesn't turn on the marquee when I turn it on. Is it fried? If not, what is it and how can I fix it? Please Help!
P.S. For future reference, does the Axon 2 carry a warranty? If so, it would give me a sense of security.

--- End quote ---

The marquee will only turn on if you program it to turn on. Does your program use the marquee?

I can't offer a warranty because of the high probability a beginner will make a silly mistake. But what I do offer is personal support to help you repair your Axon (or at least work around the problem) if you have one of those 'moments' :P

Navigation

[0] Message Index

[#] Next page

Go to full version