Logo design in black and white, featuring a stylized heartbeat pattern like an ECG line, but with a circuit-like appearance. The heartbeat line should have a central peak that is bold and dynamic, made up of clean, geometric lines resembling electrical traces or pathways on a circuit board. At the highest peak, integrate a subtle icon, such as a small gear or airplane propeller silhouette, symbolizing engineering mastery and technical expertise. The heartbeat should taper smoothly at both ends, incorporating small circuit nodes and branches to evoke a sense of connectivity and flow. The overall design should be minimalist, bold, and suitable for engraving, conveying that the subject is the vital, intelligent circuitry at the core of any project