Assembling MS3 Board and need help with U3

Ask questions about DIY board assembly issues, fault finding and testing. (Covers all Megasquirt versions and board.)

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mustangman570
MS/Extra Newbie
Posts: 14
Joined: Tue Apr 21, 2015 7:34 am

Assembling MS3 Board and need help with U3

Post by mustangman570 »

I am assembling my MS3 board and U3 doesn't have a "notch" like all the other chips do.However it does have a "dot" on it, does that "dot" replace the "notch" and should be oriented on the same side as the "notch"? See picture bleow:
racingmini_mtl
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Re: Assembling MS3 Board and need help with U3

Post by racingmini_mtl »

mustangman570 wrote:However it does have a "dot" on it, does that "dot" replace the "notch" and should be oriented on the same side as the "notch"?
Yes. The dot indicates pin 1 and the square pad on the board also indicates pin 1 (in addition to the notch on the silkscreen). So the picture shows the correct orientation.

Jean
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mustangman570
MS/Extra Newbie
Posts: 14
Joined: Tue Apr 21, 2015 7:34 am

Re: Assembling MS3 Board and need help with U3

Post by mustangman570 »

You are awesome my friend THANK YOU!!!
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