Ilyen problémák megoldására fejlesztette ki annak idején a Philips az I2C extendert.
https://www.nxp.com/products/no-longer-manufactured/i2c-bus-extender:P8…
http://www.ti.com/lit/ds/symlink/p82b715.pdf
https://sandboxelectronics.com/?product=active-i2c-long-cable-extender-…
https://www.ebay.com/itm/10PCS-I2C-bus-extender-IC-PHILIPS-DIP-8-P82B71…
https://www.ebay.com/itm/10PCS-I2C-bus-extender-IC-PHILIPS-SOP-8-P82B71…