7-port USB hub for LubanCat

This is a 7-Port USB hub designed for LubanCat. It extends one USB port on LubanCat to 7 usable USB ports, which allows you to connect much more USB devices to your LubanCat. There is a red LED on board as the power indicator, and seven green LEDs aside the USB ports as transaction indicators.

This USB hub is compatible with all versions of LubanCat, including the old A/B model, A+/B+ model, compute module (with development kit), LubanCat 2 (B model), LubanCat Zero and LubanCat 3 (B model). The board size of this USB hub is the same with LubanCat B+ or LubanCat 2/3 (B model). The old LubanCat A and B model also have the same size, except that they don’t have those rounded corners. This USB hub has 6 mounting holes at correct positions and could be mounted under any LubanCat model except the compute module.

For different models of LubanCat, this USB hub uses different approaches to (optionally) back-power the LubanCat, which significantly simplifies your wiring and allows you to power both the USB hub and LubanCat with only one power supply.

There are also 7 digital output pins on board, which can tell whether a USB port is in used. These output pins are in 3.3V level and can be directly connected to LubanCat’s GPIO pin, or connected to an external microcontroller.

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