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witnessmenow / ESP32-Trinity

An Open Source ESP32 board for connecting to HUB75 Matrix Panels
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Pin header part number incorrect? #20

Open lmurdock12 opened 1 year ago

lmurdock12 commented 1 year ago

The BOM here points out that the 16 pin header on the bottom side is LCSC part C30734. image

This part does not match the part I am seeing in the trinity pictures with the two spacer pins on each and and the notch image

What should be the correct part number?

I see 2×8Double female header - See Note on the BOM sheet, is this pointed out where the "note" is?

thanks!

witnessmenow commented 1 year ago

Hey,

Well spotted actually, not something I thought about.

A double female pin header like your photo will work, but as you say, it's not the same. The company that assemble the Trinity for me (makerfabs) were able to source a different part that is keyed (meaning it has that little nub) and also wider.

The downside of the regular header is it is possible to put the Trinity in backwards (easy enough to diagnose as the printed arrows won't match up) and it's also possible to plug it in not centered (harder to diagnose). Neither should result in damage to the board or Trinity

The only place I found it before was AliExpress in quantities of 100, which doesn't really make sense for a BOM, but here it is:

US $25.71 | 100pcs 2.54mm 0.1" Pitch 2x8 Pin 16 Pin Female Pin Header Strip Polarizing Key https://a.aliexpress.com/_msmBFjM

Hope this helps

On Sat 25 Feb 2023, 22:52 lmurdock12, @.***> wrote:

The BOM here https://github.com/witnessmenow/ESP32-Trinity/blob/master/hardware/ESP32Trinity/V1.2/Trinity%20Bom%20V1.2%20-%20BOM_ESP32_TRINITY_V1_2_2021-07-05.csv points out that the 16 pin header on the bottom side is LCSC part C30734 https://www.lcsc.com/product-detail/Female-Headers_BOOMELE-Boom-Precision-Elec-C30734_C30734.html . [image: image] https://user-images.githubusercontent.com/44686596/221383157-3799bd5c-5ea6-4818-afeb-5d6630e3564c.png

This part does not match the part I am seeing in the trinity pictures with the two spacer pins on each and and the notch [image: image] https://user-images.githubusercontent.com/44686596/221383114-51fdca3b-6710-46ef-aba9-02d38c3aa624.png

What should be the correct part number?

I see 2×8Double female header - See Note on the BOM sheet, is this pointed out where the "note" is?

thanks!

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