Get more out of the Robo-Tank Deluxe controller using this PCA9685 expander. It has 16 outputs on two DB9 sockets and connects to the I2C port on the controller. It allows you to connect Robo-Tank AC power bars freeing up the DB9 sockets on controller for the other extenders available. 

Note: This is a DIY kit and requires soldering the through hole parts in the image. (assembly manual coming soon but it's straight forward)

Package Includes

  • PCA9685 Expander PCB
  • 2, DB9 Female Sockets
  • 4 pin pluggable screw terminal connector
  • 2x4 pin header

Parts Required

  • Straight Through DB9 9 pin Serial cable to connect power bar - EXAMPLE

3D Printed Case

I've designed a case to house the extension that you can 3D print yourself or order one on the right side of the page. If you purchase a case there many be small defects due to 3D printing but any will be minor and only have a visual effect.

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Robo-Tank PCA9685 Expander DIY

  • Product Code: expanDIY
  • Availability: In Stock
  • $17.95 USD


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Tags: robo-tank, pca9685, expander, diy, reef-pi, hardware