Products > Test Equipment

open source GPIB adapter

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eliocor:
tomorrow I will recheck my BOM and I will send you (via PM) the updated file, or even better, it will be an occasion to learn something about GIT

Kean:

--- Quote from: dazz1 on October 28, 2024, 01:17:28 am ---The exception is the usb-c connector.  element14 don't stock the HRO part.  I am reasonably sure there are equivalents by other manufacturers that fit the same foot print.  I just don't know the part IDs.

--- End quote ---

I use the GCT USB4105 which is the same footprint as the HRO TYPE-C-31, and available from several Western distributors.
https://gct.co/connector/usb4105

dazz1:

--- Quote from: Kean on October 28, 2024, 03:55:07 am ---I use the GCT USB4105 which is the same footprint as the HRO TYPE-C-31, and available from several Western distributors.
https://gct.co/connector/usb4105

--- End quote ---

OK.  I found it at element14, but there are 3 variants.  Which one??
https://nz.element14.com/c/connectors/usb-connectors-adapters/usb-connectors?st=GCT+USB4105

Kean:
The variants are just for different gold plating and stake/leg lengths.  I use the USB4105-GF-A-120 variant for the longer legs in a standard 1.6mm thick PCB.

I manually add a little solder to ensure they are secure, but for mass production I imagine some fiddling with solder paste stencil and stake length would be in order.

dazz1:

--- Quote from: Kean on October 28, 2024, 04:19:57 am ---The variants are just for different gold plating and stake/leg lengths.  I use the USB4105-GF-A-120 variant for the longer legs in a standard 1.6mm thick PCB.

I manually add a little solder to ensure they are secure, but for mass production I imagine some fiddling with solder paste stencil and stake length would be in order.

--- End quote ---

I have updated the BOM so that a single order can be placed with element14 to get all the parts needed, except for the pcb. 

I found the usb connector was the most difficult to solder.  Solder bridges and no joint being the main issues.  I pre-tinned the pins, and used lots of flux to make good joints.  I beeped out the pins to find bridges.  I also used a loupe and a microscope. 

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