H-Bridge stl small modification. about arduino

[iLLiac4]

Much better. It would be easier to mount if the hole would not be so near the wall.
Something like:

[iLLiac4]

I havw checked your manual and saw the picture of the botton H-Relay case. I do not know if the H-Bridge get hot but, if it does then I think the space between case and heatshing of H-Bridge should be increase to avoid melting the plastic especialy PLA which is not heat resistant.

[aenniw]

Updated connectors spacing, on daily basis the heatsink isn't even warm so frame melting won't be an issue I think, but later this week I will try some load tests to verify it...