Electromechanical Relay Flasher is Day 5 in this series.
MicroPython Limit Detection Simulator is Day 4 in this series.
Converting Blockly Code to MicroPython is Day 3 in this series.
MicroPython and Switches is Day 2 in this series.
BBC Micro:bit Overview: MicroPython Hello World is Day 1 in this series.