To build a reliable alarm clock with minimal electronics knowledge and basic C programming skills, starting with a pre-assembled alarm clock kit is advisable. These kits provide essential components and guidance on assembly, helping to develop skills in electronics and soldering. For power supply, using a simple wall transformer to convert AC mains to the required DC voltage (5V or 3.3V) is recommended. The design's mechanical aspects are crucial for reliability, as alarm clocks often endure rough handling. Exploring projects using a Raspberry Pi can also offer insights into creating a custom alarm clock. Caution is advised when presenting the finished product in educational settings to avoid misunderstandings.