A category of powered LEGO products which offer direct and remote control of action bricks.

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What electrical contact material is used for PF Connectors?

I'm designing my own PF electrical connector and I want to have the same functional characteristics as the original Lego brick. Could you please let me know which electrical contact material is ...
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How many miles per hour is one notch on the IR speed remote with battery box from set 8293?

For a science fair project, we need to know how many miles per hour equals a notch on the IR speed remote. We really need your help with this. Can you answer this question, please? Thank you.