Generic Parts Listed

[rogueops]

I need help identifying the parts listed as generic on your BOM located at

https://upverter.com/borgel/748d5ee8f0eb00f8/sympetrum-v02/

I dont know what parts I need to get

[borgel]

Hmm, you might not want to build that version. It's harder to assemble and the FW never worked quite right. If you're trying to make the version from this year you want the files in the 'Hardware/FF1.1' directory in this repo. I'm still putting together a BOM to make it easy to buy parts though (hopefully done in the next few days).

[rogueops]

What is the dimensions? One site I am getting a price for the board requires PCB Dimension.

[borgel]

Boards are slightly less than 10cm x 10cm (if you're ordering from a place with size buckets).

Not sure if it's helpful yet, but I got a basic BOM up https://github.com/borgel/sympetrum-v2/tree/master/Hardware/FF1.1/BOM

[rogueops]

Looks good, no generic parts listed

[rogueops]

Having an issue with this component

CL21A106KQCLRNC

Would either of this work as a alt?

CC0402KRX5R6BB104

SMD CAP Ceramic 100nF-10V-10%-X5R

[rogueops]

Actually the part on the sheet CL21A106KQCLRNC lists 100nF, but when you check the link it lists

CAP CER 10UF 6.3V X5R 0805

So how about this one?

CC0402MRX5R5BB106

SMD CAP Ceramic 10uF-6.3V-20%-X5R;

[rogueops]

Also for the APA102C

How about this one? WS2812B Adafruit is sold out of the APA102C atm

https://www.adafruit.com/product/1655

[borgel]

Will check the passives when I get home. This design isn't very sensitive to tolerance and whatnot. As generally anything with the right value and the right size (everything is 0805) it should work.

Unfortunately you definitely cannot substitute the LEDs. The WS2812Bs communicate in a different way (and have 2 fewer pins!) So they won't work at all. However you can get APA102Cs from eBay and AliExpress pretty easily (usually much cheaper). You can also get non RGB versions which should work correctly, but obviously won't be color.

[rogueops]

Ya I stuck with the listed LEDs and was able to find them even though adafruit was out of stock and bought some

[rogueops]

7 and 11 show same PN, but difference decscrptions and price, I already started a full run of built units and boards, if I ordered the wrong parts per the links for 7 and 11 I can live with that, if the listings are wrong it will cost more of the pre-built units current being made

[rogueops]

7 and 11 also show the same SKU as well

[borgel]

Aww darn, no those should have different part numbers. Going to have to flog KiCAD and figure out what it should actually be. The value in the Description field looks like it's correct, so it's just the part number.

[borgel]

Ok. It was actually supposed to be another CL21A106KQCLRNC like line 6 (yes, I labeled components with the same value in different units. Need to fix that too, but haven't changed the schematics to match it).

[rogueops]

So what all is wrong now? This means the fully built boards have at least 2 wrong parts and I ordered incorrect parts and did not order some needed parts.

[borgel]

Crap. Well, it looks like 11 is still wrong. So so far my two errors look like lines 7 and 11.

7: Installing a different capacitor for 7 shouldn't matter (it just debounces the reset line. A bigger or smaller cap likely won't change anything). 11: This actually needs to be correct, and it looks like I have the wrong part number here too. I updated the BOM with the right part.

So it seems like just 11 needs to be fixed.

Sigh, I'm really sorry about this. I'm not sure at what step this got garbled... It's possible this happened earlier and I produced some amount of units with these errors

[rogueops]

Actually no need to be sorry as I just got a response from the company and they have not gone to assembly yet so I have time send a correct BOM or what needs to be correct, if you could do that I it would be awesome

[rogueops]

i see there is a new BOM, is that a correct one I can send for assembly?

[borgel]

Awesome! Glad that was in time.

It's correct as far as I know, but I was wrong before... I'm still at work, but so far it looks like all the values in Description have been correct so far, but the part numbers haven't been. If you search for each part number and validate that it matches the Description that should catch anything left that's incorrect.

Out of curiosity, who are you having make/assemble the boards? What prices are you seeing? If you don't mind sharing.

[borgel]

Turned out I had a little time. This is what I see wrong:

• It looks like CL21A106KQCLRNC is still wrong and matches neither line 6 or 7.
• 10 (CL21F105ZOFNNNE) is wrong
• 15 (RC0805JR-071KL) is wrong

All those have correct values... but not for that line. I wonder if somehow there was a bizarre reordering or something

Try making: 6: 08055C104KAT2A (DigiKey 478-1395-1-ND) 7: 08055C104KAT2A (DigiKey 478-1395-1-ND) 10: CL21A226MQQNNNG (DigiKey 1276-6460-1-ND) 15: RC0805JR-0710KL (DigiKey 311-10KARCT-ND)

[borgel]

Ok, I updated the BOM again with the values from above. I've now checked everything manually against its Description field and believe it all to be correct.

[rogueops]

OK I will download it again and send it off before I run out of time, thank you very much

[rogueops]

bad news, 6 and 7 are now the same

[borgel]

I think that's actually correct. I accidentally named C101 using a different unit from C104 and C105.

[rogueops]

whew!

Could you provide me a file where is shows what parts go where(numbers on board to match BOM Ref Des) like the ones you just mentioned, it only shows the LED numbers on the board thanks in advance!

[rogueops]

I also got just the board made and currently ordering parts but dont know where to put them, i wanted to practice some harder soldering

[rogueops]

also if you could give me a guide to flash the firmware I would appreciate it

I will test it out and send any tweaks or tricks I find

[rogueops]

So I figured out where the LEDs go and the ST chip, but no idea where the other parts go

[borgel]

Sorry, was out of town and not doing much computing

I added a new document called sympetrum-v2 FF1.1-F.Fab.pdf to the HW/FF1.1 directory. It shows where each component goes.

There are two ways to flash the firmware.

1. Use an SWD programmer (like an ST-LINK/V2, or a Segger JLink, or a Bus Pirate, or others) and connect to the 4 pin programming header. If you need to get a programmer the cheapest option is probably to get one of the skeezy cheap ST-LINK/V2 Mini clones like [0]. I used one (from another source) for most of my development and it was fine.

2. Using the built in UART bootloader and an FTDI or other serial adapter. If you don't already have a programmer this might be easier. It should work, but I've never tried it. It looks like you might be able to use the tool here [1] as a starting point to figure it out.

In either case you should be able to flash the hex files I posted under the releases page instead of compiling it yourself (though you can do that too of course).

[0] https://www.amazon.com/dp/B01N79YDJE/ [1] http://www.st.com/en/development-tools/flasher-stm32.html

[rogueops]

Looks good, I will give it a go, I have both of those programmers and will try the ST Link one, will I be use the left or the right wing?

[rogueops]

Missing D101 on the BOM and SW101