but at a level too low to be read by the Pi. He solved this with a clever resistor ladder to shift the signals to straddle the 1.8 volt transition on the Pi, and after solving some noise problems ...

In this first article we will propose to explore the power of the Arduino board with experiments, including circuitry and software, moving further to a high-level activity than ... connected to a ...

To aid in this task, [Jan Oelbrandt] created Shift4Me, an open-source Arduino powered electronic shifter. The system consists of a hall effect sensor at the pedals to measure cadence, an Arduino ...

The 3.3-V power can be taken from the Arduino’s onboard voltage regulator, and the I2C bus connections SDA and SCL can be used directly without additional level shifters (at least I had no problems ...