PiRyte Mini 16 Channel Digital Input Extender adds 16 current protected digital inputs to the Raspberry Pi via an MCP23S017 SPI bus I/O extender.
I needed an interface board to bring in inputs from various parts of my model railroad, i.e, push buttons and occupancy block detectors. I didn't see any product out there that is stack-able and uses cabling, which for me, makes for neater and better installations.
I decided to break out the digital input function from the PiRyte Multi-S and offer this as a kit to keep costs down for the hobbyist.
Additionally, this board is stack-able so you can mix and match with other HAT conforming boards. For instance, I run this board with no problems with Adafruit's 16 channel PWM board.
Finally, I like to have neat, secure wiring runs so I'm a big fan of using cables. I provide the 10p10c cables in various lengths as a convenience. The ability to plug and unplugged cabling without tearing apart a Raspberry Pi stack is a major plus for me. Imagine the added work needed to unstack a bunch of boards on a Raspberry Pi so that you can reach the screw terminals for individual wires and then keep track of all the wires?
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I have been a software developer for all of my adult life. A couple of years ago, my old passion for electronics and model railroading got reignited with my first purchase of a Raspberry Pi. Since then, I have created a wonderful open source web app for the Pi, called Breezy4Pi at www.breezy4pi.com. This application enables a hobbyist to program the Raspberry Pi with mere mouse clicks to execute small programs.
Along with Breezy4Pi is the line of I/O extenders, break out boards and, my latest, the Mini ATX PSU. These are all designed to work well together in a compact stack-able configuration appropriate for the general hobbyist and model railroader.
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