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RealTime clock USB Light - RTUL

RTUL prototype

General

This module interfaces a I2C RTC via USB.

RTUL

Have a look at this modules Image Gallery

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=="rtc0-9*", 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

Created by: tostmann last modification: Monday 26 of July, 2021 [22:28:43 UTC] by tostmann

Pictures

4S0ETH
Gallery: 4S0ETH

Wiki

Blogs

Image Galleries

File Galleries