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PaxInstruments / t400-electronics

Electronics for the Pax Instruments T400 temperature datalogger
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Test pad size #129

Closed charlespax closed 9 years ago

charlespax commented 9 years ago

Maybe we should have larger test pads to aid in programming jig alignment.

(From our discussion at lunch.)

charlespax commented 9 years ago

@samchoy88 what are your thoughts on this? We should have a decision for Electronics version 0.10.

samchoy88 commented 9 years ago

Here is the drill size of the test pad. image

This is the reference test point component dimension: image

http://www.keyelco.com/category.cfm/Test-Points-color-keyed-Thru-Hole-Mount/Compact-Style/p/518/id/521/c_id/746

charlespax commented 9 years ago

We only need a through hole test hook for a ground test point. The rest only need to be large enough to make contact with the test jig. See https://github.com/PaxInstruments/t400-electronics/issues/107 and https://github.com/PaxInstruments/t400-electronics/issues/38.

samchoy88 commented 9 years ago

Here is the sample test pin on the Rev 0.9. image

Mounting holes at the corner will handle all test point alignment.

samchoy88 commented 9 years ago

Pogo pin work great on test point of Rev 0.9 board. The pogo pin is sharp and narrow then the other (round head)

image

samchoy88 commented 9 years ago

Pogo pin reference: http://www.pccp.com.tw/images/ccp/Tradition_Probes/P-25.pdf

charlespax commented 9 years ago

Okay, closing issue.