[Roman Dvořák] from ThunderFly has experienced it on their drone building journeys, and that’s why they bring us two wonderful open source hardware boards: an I2C bus extender, and an I2C ...

Our guess it that an SPI / I2C IO extender could lift this limitation. A quick (shaky) video is embedded after the break.

ESD protection for IO and core supplies is constructed in an aggressive footprint. 3.3V LVDS TX & RX cells, along with 3.3V OTP programming, 3.3V I2C open drain and analog cells complement the GPIO ...

Certus is pleased to offer I2C open-drain IOs across multiple process technologies. The Certus I2C IO can support external supplies of 1.8V, 3.3V and 5V at Fast Mode (400Kbps) and Fast Mode+ (1Mbps) ...