DivaConSlider JLCPCB order questions

[Pityke1105]

Hey,

This is a really nice project, thank you very much for your effort!

I'm planning to build this and for the slider I'm planning to use JLCPCB. As the BOM has Digikey part numbers I went ahead and collected the part numbers and they even have the MPR121 on stock still, but the 250mW resistors are problematic. It's one thing that all are extended parts, but the 470 and 75k ones (R2,R4,R6,R8,R13) are out of stock and there is no substitute part with the same parameters. The automatic part selector suggests 125mW versions but I'm a bit hesitant on downsizing.

Should I just order them separately from somewhere and solder them myself, or will the 125mW version be OK?

For the full picture, here are the components on the PCBA list

Touch controller: C91322
LED-s: C5378721 (Its not Adafruit but I guess it's the same)
C1-C72: C1711 is the same as in BOM but C49678 is the same just different manufacturer + it's not extended part
R1,R3,R5,R7, R9, R10,R11,R12 10kΩ: C276215 is the same as in BOM, C17414 is the 125mW version
R2,R4,R6,R8 75kΩ : C276235 is the same as in BOM, C17819 is the 125mW version
R13 470Ω: C317254 is the same as in BOM, C17710 is the 125mW version

Other thing is that do I need to worry about tooling holes? I did not see any on the picture of the assembled board and I suspect that is also PCBA (or you have excellent soldering skills :) )

[ravinrabbid]

Hi,
all resistors on the board are used for pull-up/pull-down or signals, so using substitutes with lower amperage should pose no issue. The LED's part number matches the ones I also used. Capacitors should also be fine.

I can't help you with PCBA, since I've never used it. I don't have excellent soldering skills, but I somehow managed to assemble it myself using a cheap hot-air gun ;)

[Pityke1105]

Thank for the clarification. I'll just go with the 125mW resistors then, makes the PCBA a lot cheaper. That's also my first time using PCBA but normally I do just THT and very minor SMD. I don't even have hot-air station and I don't really want to make my life miserable trying to solder a QFN-20 package with an iron. :D

I'll receive 5 boards, 2 fully assembled on top side and the whole thing will cost about 42€ so it's not that bad. I only have to purchase the pin headers and the display, but those I can manage easily.