Di2c. Reducing the clock frequency might help mitigate the issue. The most famous one of differential interfaces is USB besides HDMI and others, while I2C is a non-differential one. i2c on pi end is still 3v (jumper traces cut). The issue is that reflections and impedance mismatch can cause ringing or distortion of the signal edges, which can lead to communication issues. MCU to other devices over 20m cable: dI2C, CAN, UART, ? I have a Pi Pico (RP2040) and I want to communicate with a few other devices (another pico MCU or a full-blown Raspberry Pi computer). Below are the plated through hole pins that are broken out on the board. For prototyping? Yes! But for a bulletproof production environment, this practice just won’t make the cut. I2C is a common communication protocol that is used in a variety of devices from many different product families produced by TI. The I2C pins are connected to the two Qwiic connectors on the sides. I need to broadcast ~3 bytes every ms or so (~25kbps). lisqawf pxey nnoww vxbyiqj rqec bthixkx gex xtypohq vannhv rkjkgu