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JST KR Arduino Shield J5 to Control Board J10 backwards/inconsistent

Open Roger-random opened this issue 5 years ago • 1 comments

Noticed an inconsistency with Arduino Shield connector J5, which connects to mainboard.

In Figure 17 and in the assembly text, notch for this connector is to face OUTWARDS.

Later in the same document, Figure 31 shows the opposite. Where the notch faces INWARDS.

Which is correct? Both!

Figure 17 (face OUTWARDS) is consistent with JST-KR connector specification for pin 1 to line up with pin 1 in schematic. (Carries +12V) It also matches the alignment for the connector on main board.

However, the cable on the parts list Digi-Key 455-3156-ND is wired such that pin 1 on one side is pin 6 on the other. (pin 2 on one is pin 5 on other, etc.) Meaning the circuit is won't work unless the Arduino shield connector is flipped around [Figure 31]. (Or flip the main board connector, but obviously not both.)

Suggested action:

Roger-random avatar Sep 12 '19 09:09 Roger-random

Workaround for people who have already purchased a 455-3156-ND as per current parts list: ignore Figure 17 and assembly instructions, flip around the Arduino connector so notch faces inwards as per Figure 31. It violates JST-KR spec but circuit will work.

Roger-random avatar Sep 12 '19 09:09 Roger-random