20131030o

more regex: (electrolyte capacitors): (E\d+)\t(\w+F) -> | $1\t| $2\t|

components that were ordered and stuff

We need to have a look at what components were ordered[0] and compare this to what components we need for one board. Then we need to see what's missing and order that. We need enough components for two board + errors.

[0]: The order that the faculty guys placed with farnell, not the list we sent them.

Spreadsheets!

I made a spreadsheet in which I will plot all the information about all the components so we can use that as a base rather than the various markdown tables we've been using up to now.

https://docs.google.com/spreadsheet/ccc?key=0ArdjfE3gez7gdHV6MHZBODdZYzFlUkhWNWFzd0tKbXc#gid=0

counting the headers

Get out the PCB list, display only components, sort by component comment and find all the header \w+ ones.

Total: 278

resistors and capacitors

Rune counted 53 10uF capacitors on the board, however according to the SCH list in Altium we had 54. Turns out one of those 54 was the 4.7uF capacitor: its value had been edited to 4.7uF but the comment and description still listed it as 10uF (the SCH List can't display components' value for some reason). So that's something we should write down as a lesson: make sure to list required information of a component in its description or comment field.

I looked through the resistors and capacitors and updated their descriptions to match desired value so that it'll be easier to find them using the component or SCH list in altium.

The pull-up resistors Eirik wanted for the sd card schematic are just regular resistors.

after Rune and Fedor's crunch time sessions the number of required resistors and capacitors changed but the wiki wasn't updated (we should add a note in the report about how future groups should figure out some smart way of managing their components). Also some of the values were estimates, like with the user LEDs which we said we needed 20 of while we ended up with just 16 on the board.

old resistor/capacitor list:

Resistors

Value	Package	farnell	comment	count
0R	1210	Farnell	PSU	2
56R	1206	Farnell	non-PSU LEDs / I/O LEDs	20
27R	1210	Farnell	for use with logo LEDs	2
65R (64.9R)	1206	Farnell	PSU	1
105R	1206	Farnell	PSU	1
120R	1210	Farnell	PSU	4
190R (191R)	1206	Farnell	PSU	1
330R	1206	Farnell	FPGA	3
360R	1210	Farnell	PSU	1

Capacitors

| Value | Package | farnell | comment | count | 40 42 |-------|---------|---------|---------|-------| 41 -| 10µF | ? | Farnell | size B pol cap footprint | 8 | 42 -| 0.1µF | 1210 | Farnell | PSU 13; crystal 2 | 13+2 | 43 -| 0.1µF | 1210 | Elec cap, farnell | Serial Port Driver, size B pol cap footprint created | 5 | 44 -| 1µF | ? | | decoupling pin of the EFM32 need a 1µF cap. this will be in the microcontroller schematic | 1 | 45 -| 1µF | 1210 | Farnell | Decoupling |

updated list:

Resistors

Value	Package	farnell	comment	count
0R	1210	Farnell	PSU 1.2V	1
56R	1206	Farnell	non-PSU LEDs / I/O LEDs (16), Logo LEDs (2)	18
27R	1210	Farnell	for use with logo LEDs	2
65R (64.9R)	1206	Farnell	PSU	0
105R	1206	Farnell	PSU 3.3V	1
120R	1210	Farnell	PSU 1.2V	1
190R (191R)	1206	Farnell	PSU	0
330R	1206	Farnell	FPGA	3
360R	1210	Farnell	PSU	0
50kR	1206	Farnell	SD	7
100kR	1206	Farnell	SD	1

Capacitors

Value	Package	farnell	comment	count
10µF	Elec cap	Farnell	size B pol cap footprint, used in the PSU schematic	4
0.1µF	1210	Farnell	PSU 13; crystal 2	15
0.1µF	Elec cap	farnell	Serial Port Driver, size B pol cap footprint created	5
1µF	1210	Farnell	50 for decoupling, 3 used in the microcontroller schematic	53
4.7µF	1210	Farnell	used in the microcontroller schematic	1

WHEN REPLACING COMPONENTS FROM THE VAULT

MAKE SURE THE NEW ONES HAVE THE SAME GOD DAMNED IDENTICAL FOOTPRINT OR ELSE YOU'LL MESS UP THE .PCBDOC FILE.

OOORRR just use smart edit in the SCH/PCB List in Altium, which allows you to batch edit a single property column! (right click, switch to edit mode, select the columns you want to change, right click & select smart edit)