2SIO silkscreen error
If you're building one of Grant's 2SIO boards, be aware that the silkscreen is incorrect for D3, D6, D9, D12, D15 & D18. The cathode should be up toward the Molex connectors, instead of down as shown on the silkscreen.
This matters only if you are configuring the board for a current loop device, those diodes are not used if you are configuring it for RS232.
Geoff.
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