@jongrock-chun I2C is supported pretty well on former Omega2 firmwares. Only the i2cdetect command didn't work up to the firmware v0.2.2 b194. The i2cdetect command is a part of the 'i2c-tools' package, it's a separate utility: /usr/sbin/i2cdetect. You could live without it. An evergreen question Older Omega2 firmwares: http://repo.onion.io/omega2/images/images/?prefix=omega2/images/ Newer - OpenWrt 18.06 based - Omega2 firmwares: http://repo.onioniot.com/omega2/images/ Omega Firmware Changelog (Omega and Omega2): https://github.com/OnionIoT/source/blob/openwrt-18.06/CHANGELOG.md