Arduino Nano frequency counter with atomic clock accuracy Project description and test setup With this project you can measure a frequency from less than 1 Hz to about 6.4 MHz, with atomic clock ...

This project uses an Arudino and a DS1302 real time clock module to display the time on a 3D printed 7 segment flip display which is driven by 28 servos. The servos are controlled by two PCA9685 16 ...