RTUL RTUL

Archive — discontinued

This product is no longer manufactured and cannot be ordered. The page stays online as a reference for devices still in use; specifications, prices and external links date from the time it was sold and may be out of date.

This module interfaces a I2C RTC via USB.

RealTime clock USB Light - RTUL

RTUL prototype

General

This module interfaces a I2C RTC via USB.

RTUL

Specs

DS1338 or PCF85063
i2c_tiny_usb - Kernel module
CR1620 battery
Status LEDs
plastic enclosure

Documents

LUW21.pdf - schematics

Implementations/References

I2C-Tiny-USB - Digispark implementation
example of /etc/udev/rules.d/99-rtc.rules:

ACTION==“add”, KERNEL==“i2c-[0-9]”, SUBSYSTEM==“i2c-dev” , RUN+=“/bin/sh -c ‘echo ds1307 0x68 > /sys/class/i2c-adapter/%k/new_device’” ACTION==“add”, KERNEL==“i2c-[0-9]”, SUBSYSTEM==“i2c-dev” , RUN+=“/bin/sh -c ‘echo pcf85063 0x51 > /sys/class/i2c-adapter/%k/new_device’”

ACTION==“add”, KERNEL==“rtc[0-9]*”, SUBSYSTEM==“rtc” , RUN+=“/bin/sh -c ‘ln -sf /dev/%k /dev/rtc’” RUN+=“/bin/sh -c ‘hwclock -s -f /dev/%k‘“

Availability

This unit is available in our shop