You're too cool for I2C, and SPI has so many wires, 8-bit parallel... how can that be fashionable!? You are a 1-Wire kinda gal, and you want more 1-Wire breakouts in your life to complement all of your great engineering. Well rock on, because here you go, it's a 1-Wire controller with two open-drain GPIO. You can put as many of the DS2413s as you want on a single I/O line, each one is uniquely addressable and shares the single I/O pin happily. The two controllable I/O lines (PIOA and PIOB) can be used as inputs or outputs. They are open-drain, so if you want to power an LED or something, you'll need a remote power supply (see Maxim's product page for more details) We have a basic Arduino sketch that uses the OneWire library to communicate with this chip. Don't forget to add the 4.7 Kohm resistor from I/O to your 1-Wire controller power supply (3.3V - 5V) on the Arduino side of the wires. Revision History * As of August 1st, 2024 – We've updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen. Specifications * Dimensions: 15.78mm x 9.96mm x 2.94mm Resources * Tutorials and Downloads https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2023-03-06 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2023-12-27 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2024-09-19 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2024-11-29 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2024-11-30 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2025-04-09 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2025-08-06 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2025-11-28 https://elecena.pl/product/22711298/ds2413-1-wire-two-gpio-controller-breakout 2025-11-29