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PnP Focus: The simplest-ever Arduino focus controller

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PnP Focus: The simplest-ever Arduino focus controller I want to share with you the Arduino-based focus controller named "PnP Focus". As the name implies, I want it to be as easy as "Plug and Play". No soldering. No hassle with firmware upload. You simply 1) buy the readily available components, 2) stack them, and 3) upload the firmware by a single click. Features: - Manual control - LCD display - Temperature sensor - compatible with Moonlite ASCOM driver - compatible with commercially available focuser motors. I have tested with various motors from - Robofocus - Moonlite - USB_Focus All of them use the DB9 male connectors. See the wiring below. It also works with the popular DIY stepper motors: - 28BYJ-48  (5V and 12V) - 17HS13-0404S-PG27 (12V) Components required: 1) Arduino Leonardo board. ($5-$10) 2) Ardumoto L298P motor driver board ($9). Choose the board that use Pin 3, 11, 12, 13 for driving the motor. 3) 1602 LCD and keypad shield