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Need to connect two boards together. Initially I thought about using a ribbon cable like this one, but everything I found was significantly longer than what I needed (~30mm max). Are there any other options to achieve a similar result, that I'm maybe completely missing?

LE: I need to connect four signals, one I2C bus, ground and vcc. Current consumption is around 10mA.

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    \$\begingroup\$ google mezanine connector \$\endgroup\$ – jsotola Oct 4 '19 at 6:09
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You could just cut the ribbon down to length and buy some connectors.

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    \$\begingroup\$ And it's really quite easy to both cut the cable and install the connectors. You don't need any special tools if you're just making a small number of them. \$\endgroup\$ – pericynthion Oct 4 '19 at 6:14
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You can buy a roll of ribbon cable and a bag of connectors and make the cable to the exact length you need.

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  • \$\begingroup\$ I missed the fact that you can build the ribbon cable using IDC connectors. That looks like the way to go, thanks for the suggestion! \$\endgroup\$ – Alex Oct 4 '19 at 6:17
  • \$\begingroup\$ Sometimes (especially if the cable is similar to one with a popular purpose, such as raspberry pi gpio, or in the old days floppy drives) it's actually cheaper to buy a ribbon cable assembly and a loose connector, than to buy all the discrete parts. (Or in ones teenage hobby years, carefully remove and re-use the connector). A vise is a good tool for installing them. \$\endgroup\$ – Chris Stratton Oct 4 '19 at 15:07

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