new connectors needed
flat cable 2x40 pins low cost IDE specs
connector male IDE 2x40 specs, to construct flat cable connection
to mate with Mega edge connector
connector 2x8 female IDE connector for flat cables
male connectors and male pins to construct Grove connector
RC plane (yes airplane) LI-PO battery connectors male females with male/females pins to construct longer cable connection
ONE to Many connector like 2- input female pins to insert to connector with connector other side has 8 output to insert male or female pins, called distribution connector, just like the black 0.1"(2.54mm) crimp connector.
this connector does not exists yet
2 version needed:
one version for use with typical digital as we use in crimp connector, 1 input and 2, 4, 6, 8 on the other side.
One version for power connection, as we use in Li-PO battery connector, 2-input and 2 , 4, 6, 8 , 12, 14, 16 output
2-8 or 2-16 would be the most used.