[SeanHodgins] has a project in mind where he needs to sample over 500 analog sensors. To get ready, he made a breakout board for 32-channel analog multiplexer device he wants to use. He put the ...

The MCP23008 is an 8-bit I/O expander with I2C interface. This general purpose device has three address pins. It contains multiple 8-bit configuration registers for input, output, and polarity ...

This article will help you build a simple Arduino-based DCC system. Growing up in the 1980s I was living the dream. I had an HO layout on a 4 x 8 sheet of plywood in my parents’ basement in Reading, ...

[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Arduino ...

I became aware of the Arduino Project from occasional media reports and a presentation at Atlanta LinuxFest 2009. I was impressed with what the Arduino community was doing, but at that time, I saw no ...

Catalyst Semiconductor has added a 16-bit device to its family of I/O bus expander ICs. The CAT9555 comprises two 8-bit ports (16 I/O pins), which power up as inputs and can be configured as an input ...

Continental Access, a division of Napco Security Group and leader in access control, has been delivering state-of-the-art access control units for more than 40 years. Most recently, our engineers and ...

The MCP23S08 is an 8-bit I/O expander with serial interface. This device offers 8-bit, general purpose, parallel I/O expansion for SPI applications. It has two hardware address pins and uses SPI ...