jollygiant Posted April 29, 2020 Report Share Posted April 29, 2020 So I want to make this ECU base out of carbon (now theres a surprise!!) but it seems to be screwed to the motherboard. Is this just for static as there are no wires attached to the outside of it and it just sits on undertray as standard? If needed I can just run a wire from the outside to earth on the battery or frame. Any info will be rewarded by a gram of the highest quality carbon dust Quote Link to comment Share on other sites More sharing options...
Thunderbolt Posted April 29, 2020 Report Share Posted April 29, 2020 Could be a heat sink? Quote Link to comment Share on other sites More sharing options...
Lobo Posted April 29, 2020 Report Share Posted April 29, 2020 In your first pic the silver circle in the bottom right corner looks to be an unmasked part of a plain on the top layer of the PCB. This plain could be a ground plain. If this is the case (no pun intended) then the external case will be electrically connected through the mounting screw. Grounding if a metal case is usually done for screening reasons to minimise electrical noise/interference. The chances are that a carbon fibre box will not give the same screening, you can get carbon fibre designed for making electrical boxes that will give sufficient screening though. Whether losing this screening will cause any issues with the operation of the board due to electrical noise is difficult to say until you try it. Quote Link to comment Share on other sites More sharing options...
jollygiant Posted April 29, 2020 Author Report Share Posted April 29, 2020 15 minutes ago, Lobo said: In your first pic the silver circle in the bottom right corner looks to be an unmasked part of a plain on the top layer of the PCB. This plain could be a ground plain. If this is the case (no pun intended) then the external case will be electrically connected through the mounting screw. Grounding if a metal case is usually done for screening reasons to minimise electrical noise/interference. The chances are that a carbon fibre box will not give the same screening, you can get carbon fibre designed for making electrical boxes that will give sufficient screening though. Whether losing this screening will cause any issues with the operation of the board due to electrical noise is difficult to say until you try it. The carbon I use does seem to conduct fairly well, so it think I'll give it a go. 1 Quote Link to comment Share on other sites More sharing options...
jollygiant Posted April 30, 2020 Author Report Share Posted April 30, 2020 8 hours ago, Yamonda said: What's it from. Aprilia Mille. Quote Link to comment Share on other sites More sharing options...
chris_c Posted April 30, 2020 Report Share Posted April 30, 2020 17 hours ago, jollygiant said: The carbon I use does seem to conduct fairly well, so it think I'll give it a go. line with aluminium tape??? 1 Quote Link to comment Share on other sites More sharing options...
Lobo Posted May 1, 2020 Report Share Posted May 1, 2020 21 hours ago, chris_c said: line with aluminium tape??? You'd have to connect the tape/lining to the board (that screw terminal I mentioned previously) for proper screening but that would help. Quote Link to comment Share on other sites More sharing options...
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