Assistance needed
I'm going through and making an electronics order from Digikey, using the BOM here:
https://github.com/damienmaguire/Prius- ... V1_BOM.ods
I do this like, once every 5 years on a project, so, I have basically no idea what I'm doing.
My opinion of the crowd here (openinverter) is that almost everyone is an EE, and even though a few are doing the bulk of the work, even those not doing the work would have no problem doing the work if they wanted to. That means that they can fluidly look at someone else's design and keep up no problem.
I would like to help bridge the gap between those users and the novices who can't engineer these projects, but could manage to build them.
I very much don't want to take the attitude that I'm entitled to any handholding, but, what I imagine is extraordinarily obvious to an EE who understands the basics of the schematic, is
/r/TheRestOfTheOwl to a beginner. And probably doesn't need to be, with some added context.
Given that I'm asking for help, I'm also volunteering to do some writeup or added notes for people who aren't EEs so that the next person that has these questions gets a bit more of a walkthrough.
That said, my stupid beginner questions:
1 - They do not have the component in the BOM (BC547B-NPN-TO92-EBC). Here is the BC547B family:
https://www.digikey.ca/products/en/disc ... sv=0&pv7=3 . (BOM mentions an update from the BF959 which is an antiquated part? But, all but 1 of these on the list also seem antiquated). EBC is obviously the order of the legs Emm/Base/Col. I have no idea which variant to pick. I presume it's just used as a generic jellybean transistor ala 3904, but, I have no ability to understand the big picture of it's role in the schematic, so it's dumb for me (or, me as a stand-in for an even more novice following instructions) to make guesses.
2 - C-EU050-024X044 (
0.01uF and
1uF caps). Ditto as above. Had to dig to get an actual explanation of the library nomenclature. 050-024x044 is a physical form factor that translates to 5mm grid, 2.4mm x 4.4mm for the package. Big deal, I'd make it fit regardless. But no idea what type of cap or spec to pick (I'd presume ceramic?). Just sorting by quantity in stock, ratings are anywhere from 50v to 1000v. I can randomly jab at a cap but I don't want to guess wrong. I've done this before where I picked something and people were like "Whoa whoa whoa, no, that won't work, you gotta use this type, something with these ratings..." and it being black magic to me. Often "Oh, just anything" actually means "I've applied 10 obvious filters in my head already that massively narrow it down, anything that passes that is fine" and that's hard for a novice to replicate since they can't buy a "just anything" and sometimes it matters. Some are $0.05ea some are $5.00 ea.
3 - MCGPR10V227M6.3X11 - (220uF 10v cap, 20% tolerance, presuming an electrolytic?, 6.3mm (round) x 11mm (tall)). Ditto as above. Digikey apparently has none of this brand, which is why it was coming up blank. Chose
a Panasonic instead.
4 - R-EU_0207/10 - I figured these were just jellybean 1/4 watts, but had to look it up to be sure. 0207/10 translates to 2mm wide, 7mm long, 10mm between holes (1.5mm per side room to bend your leads down). No wattage is given but, I presume 1/4w because of the component length?
5 - SCHOTTKY-DIODEDO201T15 - Obviously what it says. But, specs?
https://www.digikey.ca/products/en/disc ... &FV=-8|280
6 - "Blue Pill" - This obviously means to take a
Viagra because you're going to need it to keep up with all the social attention this project is going to get you. Umm, but, seriously, which STM32 am I getting?
https://www.digikey.ca/products/en/inte ... 85?k=STM32 Do I need some kind of programmer for it or is that something I can do over USB/wifi?
7 - 6TB and 10TB - Terminal blocks. Type? Spacing?
https://www.digikey.ca/products/en/conn ... &FV=-8|371
8 - The schematic shows a wifi module. Is that part of the STM32 or something else?
9 - Anything else that's being connected to the terminal blocks that I should make sure I have in stock either for testing or for implementation?
Is this a single-sided board? After hearing Damien say "Always go 4-layer, it makes it easier", I figured it would be more complicated. I could've etched the board myself I suppose.
... I'm half-tempted to order parts for the DC controller too, and etch that board myself, just because I can.
Thanks in advance anyone who can help out.
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