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2022-06-28, 22:33
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#1 |
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If I May
"Chris Halsall"
Sep 2002
Barbados
101011010110012 Posts |
The importance of layer zero.
So... just to share...
I'm currently working on a very interesting project. What cannot be measured cannot be controlled. |
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2022-06-28, 22:44
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#2 |
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242D16 Posts |
You may be right but then again, measurement may not be required.
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2022-06-28, 22:52
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#3 | |
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If I May
"Chris Halsall"
Sep 2002
Barbados
2B5916 Posts |
Quote:
I always do serious simulations on all of my circuits. They never exactly match the in situ. That's why we spent some coin getting a silly scope into my lab. |
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2022-07-11, 21:12
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#4 |
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If I May
"Chris Halsall"
Sep 2002
Barbados
34×137 Posts |
PCB Design and Fab...
This is the part I always dread...
Everything /should/ be correct. But is it? I'll find out in about ten (10#) days... P.S. Yes, LaurV... I'm using 0805s... 
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2022-08-01, 01:12
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#5 |
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If I May
"Chris Halsall"
Sep 2002
Barbados
34·137 Posts |
So... Just to share...
P.S. I hate making mistakes. |
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2022-09-30, 00:57
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#6 |
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If I May
"Chris Halsall"
Sep 2002
Barbados
34·137 Posts |
So... I have to report to my boss in about 12 hours.
I've done serious stuff. But have nothing to demonstrate. Sucks to be me. |
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2022-09-30, 06:29
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#7 | |
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Romulan Interpreter
"name field"
Jun 2011
Thailand
3·23·149 Posts |
Quote:
... Sorry, I don't have on hand anything with 0201 right now... For scale, the 50 milliohm shunts are 2010, and close to one of them you can see the side of a 1206 which was handsoldered in an oblique position after fact (design mistake, found out during development of the firmware, there is already a new PCB on work; there are also few 0603 handsoldered between the legs of some transistors, one visible above the R in my name - 01C means 10k ohm, and there is a 0402 soldered oblique close to the diode/big hole in the center - everything is "fixed" in the new version). In fact, there is no 0805 resistor there, if I see right. There are few capacitors however, but all the resistors are 0402, 0603, 1206, and 2010. The MCU is a Cortex M0. Sorry I can't show the other end, nor side. But you can clearly see the comparison size on the side of he PCB (the 68.1 ohms are 1206 and the 3 capacitors close to the white connector are 0805). Last fiddled with by LaurV on 2022-09-30 at 06:47 |
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2022-09-30, 22:01
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#8 | |
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If I May
"Chris Halsall"
Sep 2002
Barbados
1109710 Posts |
Quote:
Now that I have proven my circuit in situ, I'm going to bring my passive components down to as small as possible. Can't hand-solder 0201 easily, but shouldn't need to... Edit: Oh, BTW... Are you using the shuts to measure current draw? Last fiddled with by chalsall on 2022-09-30 at 22:36 |
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2022-10-10, 09:29
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#9 | |
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Romulan Interpreter
"name field"
Jun 2011
Thailand
3×23×149 Posts |
Quote:
Last fiddled with by LaurV on 2022-10-10 at 09:33 |
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