Add information about some BOM items

choumarin commented 2 years ago

Hi,

Great project, going to try and make this happen. The BOM is missing information on resistors:

R1, R2, R3, R4, R17, R18, R19 is missing a value
R5, R21 is indicating 0R with a *

According to the picture, all of those those seems to be DNP, is that correct?

Also, do all the LEDs have the same color?

Thanks!

jamesturton commented 2 years ago

Hi @choumarin! I've now updated the schematic (2d783980ca84bd099cc5140e28db72a5c78a2f65) with values R1, R2, R3, R4, R17, R18, R19. They provide ESD protection for the MCU, so are actually quite important if you want use the headphones outside of an ESD controlled lab. R5, R21 are alternatives for Q1 and U1 respectively - see the comments on the schematic for more detail. I have also given example LED part numbers for parts with suitable brightness.

All the best building this! James

choumarin commented 1 year ago

Finally done, I had to borrow some equipment to solder that small, especially J1.

Thanks so much for this great project!

You don't have discussion pages, so I'm just gonna add stuff here:

I measured LED_POWER_ON at 3.8V so I decided on using the 5V ESD components (you have a comment saying maybe need 3.3V)
couldn't find a replacement for U1 unfortunately, so using R21
red and green are a little pale, but that might be the replacements I chose, I was lazy and didn't recompute the resistor values
This was my BOM at digikey, with some replacement of the original BOM, it might help other people to find replacements:

QUANTITY SHIPPED	PART NUMBER	DESCRIPTION	CUSTOMER REFERENCE
30	CG0402MLC-05LGCT-ND	VARISTOR 0402	R1, R2, R3, R4, R17, R18, R19
10	3757-BAT54CW_R1_00001CT-ND	SOT-323, SKY	D5
10	160-1832-1-ND	LED GREEN CLEAR CHIP SMD	D1
10	3147-B1911USD-20D000114U1930CT-ND	LED RED CLEAR 1608 SMD	D2
10	475-2831-1-ND	LED COOL WHITE DIFFUSED 0603 SMD	D3
10	1830-1061-1-ND	LED BLUE CLEAR 0603 SMD	D4
10	23-5024262030CT-ND	CONN RCPT 20POS SMD GOLD	J1
10	WM12846CT-ND	CONN FFC FPC 5POS 0.50MM R/A	J3
10	900-2171790001CT-ND	CONN RCP USB2.0 TYP C 24P SMD RA	J2
10	490-11022-1-ND	FERRITE BEAD 330 OHM 0402 1LN	FB1
30	1292-WR04X1001FTLCT-ND	RES 1K OHM 1% 1/16W 0402	R11, R14, R15, R16
10	RMCF0402JT1K20CT-ND	RES 1.2K OHM 5% 1/16W 0402	R9
10	CR0402-JW-103GLFCT-ND	RES SMD 10K OHM 5% 1/16W 0402	R6, R20
10	RMCF0402JT5K10CT-ND	RES 5.1K OHM 5% 1/16W 0402	R12, R13
10	RMCF0402JT7K50CT-ND	RES 7.5K OHM 5% 1/16W 0402	R7
10	RMCF0402JT3K90CT-ND	RES 3.9K OHM 5% 1/16W 0402	R8
10	CR0402-FX-5100GLFCT-ND	RES SMD 510 OHM 1% 1/16W 0402	R10
10	1292-WR04X2200FTLCT-ND	RES 220 OHM 1% 1/16W 0402	R22
10	RMCF0402ZT0R00CT-ND	RES 0 OHM JUMPER 1/16W 0402	R21, R5
10	1276-1010-1-ND	CAP CER 1UF 6.3V X5R 0402	C2
10	1276-1482-1-ND	CAP CER 4.7UF 10V X5R 0402	C1
10	2SC5658T2LSCT-ND	TRANS NPN 50V 0.15A VMT3	Q1
30	CG0402MLC-3.3LGCT-ND	VARISTOR 0402	R1, R2, R3, R4, R17, R18, R19

RavaszEmber commented 1 year ago

This is my first real SMD project so bear with me if I'm asking any stupid questions.

I just bought 5 PCB's from a manufacturer without the PCB stencil or PCB assembly (hope I can assemble this myself, I know I'll be kicking myself later for this).
I bought a 0402 resistor sample book to cover all the resistors
I also bought a set of 0402 capacitor tapes for the two caps C1 and C2
I followed @choumarin's Digikey BOM for the other components and found equivalents where needed. My Digikey cart is as follows:

Index | Quantity | Part Number | Manufacturer Part Number | Description | Customer Reference | Available | Backorder | Unit Price | Extended Price USD -- | -- | -- | -- | -- | -- | -- | -- | -- | -- 1 | 5 | 23-5024262030CT-ND | 5.02E+09 | CONN RCPT 20POS SMD GOLD | J1 | 5 | 0 | 1.42 | 7.1 2 | 5 | 900-2171790001CT-ND | 2.17E+09 | CONN RCP USB2.0 TYP C 24P SMD RA | J2 | 5 | 0 | 0.9 | 4.5 3 | 5 | 900-0512810598CT-ND | 5.13E+08 | CONN FFC FPC 5POS 0.5MM R/A | J3 | 5 | 0 | 0.51 | 2.55 4 | 5 | 490-11022-1-ND | BLM15PX331SN1D | FERRITE BEAD 330 OHM 0402 1LN | FB1 | 5 | 0 | 0.1 | 0.5 5 | 5 | 2SC5658T2LQCT-ND | 2SC5658T2LQ | TRANS NPN 50V 0.15A VMT3 | Q1 | 5 | 0 | 0.4 | 2 6 | 5 | 3757-BAT54CW_R1_00001CT-ND | BAT54CW_R1_00001 | SOT-323, SKY | D5 | 5 | 0 | 0.21 | 1.05

Am I missing anything here? I noticed U1 was missing but saw your above comment that R21 was an alternative to this (may be easier to just order U1 and not need it than need it and not have it). I'm assuming I add everything to the PCB when assembling or am I mistaken? Are some components not necessary?

Thanks!

koolaidxk1d commented 2 months ago

This is my first real SMD project so bear with me if I'm asking any stupid questions.
* I just bought 5 PCB's from a manufacturer without the PCB stencil or PCB assembly (hope I can assemble this myself, I know I'll be kicking myself later for this).

* I bought a 0402 resistor sample book to cover all the resistors

* I also bought a set of 0402 capacitor tapes for the two caps C1 and C2

* I followed @choumarin's Digikey BOM for the other components and found equivalents where needed. My Digikey cart is as follows:
Index Quantity Part Number Manufacturer Part Number Description Customer Reference Available Backorder Unit Price Extended Price USD 1 5 23-5024262030CT-ND 5.02E+09 CONN RCPT 20POS SMD GOLD J1 5 0 1.42 7.1 2 5 900-2171790001CT-ND 2.17E+09 CONN RCP USB2.0 TYP C 24P SMD RA J2 5 0 0.9 4.5 3 5 900-0512810598CT-ND 5.13E+08 CONN FFC FPC 5POS 0.5MM R/A J3 5 0 0.51 2.55 4 5 490-11022-1-ND BLM15PX331SN1D FERRITE BEAD 330 OHM 0402 1LN FB1 5 0 0.1 0.5 5 5 2SC5658T2LQCT-ND 2SC5658T2LQ TRANS NPN 50V 0.15A VMT3 Q1 5 0 0.4 2 6 5 3757-BAT54CW_R1_00001CT-ND BAT54CW_R1_00001 SOT-323, SKY D5 5 0 0.21 1.05

Am I missing anything here? I noticed U1 was missing but saw your above comment that R21 was an alternative to this (may be easier to just order U1 and not need it than need it and not have it). I'm assuming I add everything to the PCB when assembling or am I mistaken? Are some components not necessary?

Thanks!

@RavaszEmber Did you ever complete this?

jamesturton / bose-qc35-usb-c

Add information about some BOM items #3