+++ title = "IoAbstraction: Arduino Pins, IO Expanders, Shift Registers using same code" description = "" tags = [ "arduino", "library", "digital-io" ] date = "2019 ...

IO_EXPANDER_PIN_NUM_0 = (1ULL << 0), IO_EXPANDER_PIN_NUM_1 = (1ULL << 1), IO_EXPANDER_PIN_NUM_2 = (1ULL << 2), IO_EXPANDER_PIN_NUM_3 = (1ULL << 3), IO_EXPANDER_PIN ...

The MCP23017, a 16-bit I2C GPIO expander, has always been a tasty chip. With 16 GPIOs addressable over I2C, proper push/pull outputs, software-enabled pull-ups, eight addresses, maskable interrupts ...

If you don’t own a cat, hearing the sound of one meowing from somewhere in the house probably comes as quite a shock. The Cat Prank box built by [Reuben] promises to deliver such hilarity with aplomb.

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Abstract: We say a discrete probability distribution over subsets of a finite ground set is spectrally independent if an associated pairwise influence matrix has a bounded largest eigenvalue for the ...