09 16 CH Output Module LED Driver Keyboard GPIO DIY for
6,68 €
Are you low on I/O?. No problem! The CJMCU-SX1509 can leverage your I2C interface for 16 extra channels of GPIO. And that’s not all! This handy device also contains a fully programmable LED driver and a keypad scanning engine which enables continuous keypad of up to 64 keys!
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