A 3.3v leg broke off my prop.

Clock Loop

It actually still works.

So far I am not using all I/O's and I don't draw any current from them at all. Just data, and signal.

Anyone know what this would do to the stability of the chip? I don't plan to use this one farther than debugging/proto but I was just curious.

Post Edited (BPM) : 6/6/2009 6:17:32 PM GMT

ElectricAye

If there's any metal still visible, you might be able to solder a thin wire to it. ???

Oops, I thought you had a DIP chip, just noticed it isn't - sorry.

hover1

BPM said...
It actually still works.

So far I am not using all I/O's and I don't draw any current from them at all. Just data, and signal.

Anyone know what this would do to the stability of the chip? I don't plan to use this one farther than debugging/proto but I was just curious.

There are 4 VDD connections on that package. Pins 8,18,30 and 40. I just don't know if they are connected together internally.

And you· meant 3.3V leg, right?

Wouldn't a breakout board be in order before you lose an important pin?

Jim

Post Edited (hover1) : 6/6/2009 6:19:23 PM GMT

Clock Loop

hover1 said...


And you meant 3.3V leg, right?

Jim

Lol, yea... It still acts like nothing happened... I love this chip... (before its leg broke too)

Philldapill

hover1, all VDD pins are all connected internally, although they are interconnected with VERY fine conductors. The same applies to the VSS pins.

The external power pins can be seen as connecting the outside power source, to the internal supply(inside the chip), through some resistors. Each pin has it's own resistor, but they all tie back to the same point within the chip. Sort of.

hover1

Philldapill said...
hover1, all VDD pins are all connected internally, although they are interconnected with VERY fine conductors. The same applies to the VSS pins.

The external power pins can be seen as connecting the outside power source, to the internal supply(inside the chip), through some resistors. Each pin has it's own resistor, but they all tie back to the same point within the chip. Sort of.

Thanks Phil,

I thought that was the case.

CounterRotatingProps

> I love this chip... (before its leg broke too)

As Monty Python's Black Knight says: " Eets only a flesh wound! "

I also had to laugh when seeing all the wire's soldered right to the pins --- almost a work of art in its own right!

- H

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No matter how much you push the envelope, it'll still be stationery.

Matthew Burmeister

CounterRotatingProps said...
>

I also had to laugh when seeing all the wire's soldered right to the pins --- almost a work of art in its own right!

- H

Same here lol

Toby Seckshund

There are many organisations around the world dedicated to the prevention of crualty to xxxxx. Is nobody going to help save that poor propeller?

How long did it take for one leg to fall off? There doesn't seem to be anything in the datasheet about the absolute max number of pin waggles.

Careful carving with a fine blade may allow a wire to be stuck on but I doubt if it would stay stuck for long, the solder would be too soft

CounterRotatingProps

> There are many organisations around the world dedicated to the prevention of crualty to xxxxx. Is nobody going to help save that poor propeller?

Toby, you know, I thought the picture showed the poor little Prop breaking out in a sweat... maybe I was wrong, and it means something else:

BPM, you've not also been water-boarding your Prop, have you?

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No matter how much you push the envelope, it'll still be stationery.

Phil Pilgrim (PhiPi)

Place the Prop in a petri dish full of nutrient, and put it in a warm dark closet for about a week. The leg will grow back on its own.

If that fails for some odd reason, put it under your pillow at night. With luck, when you awaken, you'll find some money in its place to buy another one.

-Phil

CounterRotatingProps

Indeed, Phil,

I too have recently learned to believe in the Prop Tooth Fairy [noparse]:)[/noparse]

- Howard

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No matter how much you push the envelope, it'll still be stationery.

mctrivia

i have soldered chips like this in the past. you should get some 0402 0.1uF caps to solder across the vss and vdd pins. Just for the great laugh you gave me I will send you a 1x1 free or several pcb free if you pay the postage. They are qfn though not qfp

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propmod_us and propmod_1x1 are now in stock. Only $30. PCB available for $5

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sam_sam_sam

It is a· ·ing Shame what you did to that Prop's Poor Legs and what happen to the one that broke off
·That it still works

But in all fair-nest This look like something that·I would do if I did not have the socket for it

It dose look funny to see it wired up that way..................

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··Thanks for any··that you may have and all of your time finding them

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Sam

Post Edited (sam_sam_sam) : 6/6/2009 8:51:27 PM GMT

Clock Loop

Yea, my first prop will go into a display case when its officially toast. Not yet tho.

Its a hack soldering job, but I have less than ideal conditions to work in,
and no microscope to help me see.

I can manage without, but need, and have, a fine tipped precise temp soldering station.

Without a nice soldering gun, this would be impossible.

Water-boarding? Who me? Pfft.. who cares anyhow, we all love to get waterboarded, i mean after all, its not like its torture or anything .... I know my chips love the water, and me, I can't get enough of it, and that new sport them crazy government people keep talking about, what was it,,, oh yes, water breathing. I love to inhale water, its so fun, everyone should do it. "please do not try this at home"

Mabee its an attempt to out do fire breathers?


The chip looks wet because it was taken with a 10 megapixel camera in "macrovision" mode.
I also lit the chip with a red and blue led.

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Meh. Nothing here, move along.

mctrivia

JBC makes the best soldering irons. I have an AD2700 and love it. Heats instantly and can change tips while still hot. a must for those who can not afford multiple irons. And the tips last what seems forever. I have had it for years and have not changed tips yet.

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propmod_us and propmod_1x1 are now in stock. Only $30. PCB available for $5

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

Microcontrolled

Speaking of soldering irons; how much does one like that cost?

@BPM: Your poor Propeller!!

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Toys are microcontroled.
Robots are microcontroled.
I am microcontroled.

hover1

BPM said...
It actually still works.

So far I am not using all I/O's and I don't draw any current from them at all. Just data, and signal.

Anyone know what this would do to the stability of the chip? I don't plan to use this one farther than debugging/proto but I was just curious.

Ok,

I actually·held my tounge on the first reply, but after all the other posts.....what the .....?

I would have at least hot glued the prop to a 2x4 to minimize some of the physical abuse.

We all do what we have to do. Glad it's still workin'

Jim

mctrivia

The JBC AD 2700 has been discontinued. The AD 2950 kit(cotroler, 50W hand piece, and tip) is $375. Not cheap but neither are there competitors and the competitors tips do not last as long, or as versitile or heat as quickly. Note never use a sponge to clean your tip. use plated steal woll

http://www.howardelectronics.com/jbc/ad2950.html

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propmod_us and propmod_1x1 are now in stock. Only $30. PCB available for $5

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

Clock Loop

hover1 said...


I would have at least hot glued the prop to a 2x4 to minimize some of the physical abuse.

Jim

Actually, when deadbugging, I like to let many wires just hold it in place.

Usually it works well, this time I messed up by making that 3.3 line too short, it was the first line i ran.

I never realized it was getting stressed, apparently it was, and after looking at the wire, it was too short.

Clock Loop

mctrivia said...
Note never use a sponge to clean your tip. use plated steal wool

i like to use those pots and pan steel scrubbers to clean my tips, but they aren't steel, they are aluminium or something.

mctrivia

what I use is not steal either. it is gold plated copper. sill looks like steal wool and I am sure he regular ones as long as they do not have soap built in would be just as good.

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propmod_us and propmod_1x1 are now in stock. Only $30. PCB available for $5

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

Clock Loop

mctrivia said...
what I use is not steal either. it is gold plated copper. sill looks like steal wool and I am sure he regular ones as long as they do not have soap built in would be just as good.

Cmon chips need soap too, it would go well with the waterboarding.

CounterRotatingProps

> Cmon chips need soap too, it would go well with the waterboarding

Righto! OK --- who's gonna invent the First Propeller-Powered Shower ?

> AD 2700 has been discontinued ... AD 2950

mctrivia, the tips are the same though, right? Do you do any lead-free soldering with this? That sites got a couple of good soldering videos too.

- H

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No matter how much you push the envelope, it'll still be stationery.

mctrivia

Yes my new propmod are completely lead free and the iron has no trouble. The tips between the two models are the same. They come in all kinds of shapes and sizes. For myself I have a realy sharp one 2245-003(I bought 3 with the iron since when I used wellers I had to replace tips weekly. Still have 2 unopened years later). and a big fat one for heavy traces and header pins.

The weller tips are much cheaper then JBC because the heating element is in the tip on the JBC. This is why they can heat up so quickly and why with the stand is easy to change tips while still hot.

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propmod_us and propmod_1x1 are now in stock. Only $30. PCB available for $5

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

sam_sam_sam

Here is a model that I use and works very well and for a lot less money

http://www.howardelectronics.com/xytronic/169D.html

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··Thanks for any··that you may have and all of your time finding them

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Sam

Microcontrolled

Well..... The soldering iron I am using right now cost about $20, and I have to replace tips about once every 3 small solder jobs. So I never have used a "good" soldering iron; and I finaly replaced the tip on my iron (it was originaly a point; now it's flat) and if I ever got the opertunity I would buy a nice one with a sharp tip that might even be SMD worthy.

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Toys are microcontroled.
Robots are microcontroled.
I am microcontroled.

Toby Seckshund

Not here too, there is alreadt a shower related prop project being discussed.

To put a prop on the rack is one thing, but to do it with art direction and lighting is bordering on vindictive!

(said by somebody that reversed the power to one defenseless lil' prop)

Leon

I've used Metcal equipment for years - the second-hand STSS power unit with the newer MX-500 handpiece and cartridges cost about the same as a new Weller. The cartridges last a very long time if they aren't mistreated.

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

CounterRotatingProps

Thanks for posting that Leon,

I'm shopping around for new irons - do you buy them from any particular vendor?

A side note: "G1HSM" - you must have been HAMming it up for many years, to have received such a terse sign, eh?

- Howard

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No matter how much you push the envelope, it'll still be stationery.

Leon

The STSS power units often come up on Ebay, as well as new cartridges. The equivalent current model is the MX-5000.

I've had my license since 1984.

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle