I. Hate. EmbedSky.

They need to be destroyed

Retroactively

Went to Silicon Valley Code Camp this weekend (first time). It was alright.

@RespawnedFluff That silly question about the RTC battery got into the hot network questions list. That's why it has got a high score. I might argue that it should be sent to SuperUser.

morning

@jippie Is it?

@jippie Know any tricks to make an MTD partition that's not accessible (i/e/ mem range that's not partitioned, basically) touchable from userspace? And then, to make it more fun: Without recompiling the kernel?

Compiling the kernel killed the second of my four available boards

Need to start being careful now

Turns out the memory range I found may be "default defined values", in stead of the actual env, because after the MTD0 partition, but before the MTD1 partition there's some 700kByte of unpartitioned memory and from some vars I suspect the first secotor of that space to be the actual ENV

Good morning all

@Asmyldof Heyo, I've been out in the woods all week, what about u-boot?

Anyone active?

Sorta

coloured heatshrinks, a nice thing to have

colored or anodized? (Or do you mean the same thing?_

@BrandenBoucher anodized heatshrink would really be something.

OOH SHIT

I read that as heatSINK

not heatsHRink

@BrandenBoucher I figured.

Well, yes. anodized heatshrink, that worked, would be pretty amaizing

Or at least the process of anodizing it might be

My first thought, if that were a thing is. "Hey look everyone! My heatshrink tubing is conductive!" ZAP!

It's not often you see Forrest Mims III cited in an academic journal...

OK, couple of dumb questions:

1. Switching regulator circuit is failing. It's an external-FET type. Under what scenarios does the regulator switch fail rather than the FET?

2. The circuit is "working" in the sense that the FB pin is driven to the expected voltage. But the output voltage is only 100 mV above V_FB instead of 1.5x V_FB. Normally I'd think this means one of the resistors in the feedback divider has failed (either the upper one is nearly-shorted or the lower one is nearly open). But both ohm out (in-circuit) at roughly the expected value. Any other ideas what to check?

@crasic All kind of poo sticks

Anyhollyho. Tallywopsieday from the UK, all

No idea what time it is, since I haven't the foggiest if my phone and laptop both have adjusted, or both refuse to

@ThePhoton, hard to say without the schematic (but that might just be me). Anything getting hot?

@BrandenBoucher I need to check that.

Also, there's a lot of ways that a smps can fail besides the FET. Could be the controller (check the control signal to the FET). Could be resistor issues. Could be a short. Could even be a cap (but again, that would probably be a short).

@BrandenBoucher BTW,

Not a simple circuit, but I basically used the canned design from WebBench.

Output is 0.9 V, 4.6 A.

Dammit man, I was hoping it was a simple one.

So about the best I can give you is to tell you to check for hot spots, check your resistances, scope out HG and LG, and test voltages a some points around the circuit.