Digistump Forums

The Digispark => Digispark (Original) Support => Topic started by: re8 on August 29, 2012, 10:29:40 pm

Title: Req: I2C Controlled Keypad Scan shield please?
Post by: re8 on August 29, 2012, 10:29:40 pm

I found this while researching I2C; it can be useful to me (monome clone, keyboard, etc) & perhaps useful for others?
http://www.ti.com/product/tca8418#feature
+18 GPIOs Can Be Configured into Eight Inputs and Ten Outputs to support an 8 × 10 Keypad Array (80 Buttons)
+10 Byte FIFO to Store 10 Key Presses and Releases
+Minimum Debounce Time of 50 µs

Title: Req: I2C Controlled Keypad Scan shield please?
Post by: sparr on August 30, 2012, 01:06:15 pm

a 5V device would be much easier to integrate into a digispark shield. that\'s a neat device overall, especially the GPIO functionality so that it can be a port expander instead of a keyboard scanner.