I/O I2C with OLED display (ssd1306) - Done! Docs 20 x 4 LCD display Communication I2C between devices. This might help. - Slave I2C not possible on CircuitPython. Need to use C/C++ SDK Label picos with address Sensors Acceleration sensor read on pico with circuitpython - Done! Docs RPM sensor: How to use + configure for prop shaft Make Engine RPM sensor following this GPS sensor: No. of laps, time per lap? Baud rates of: Acceleration sensor, RPM sensor Car speed display using Propshaft RPM