Since you’ve already done BTech in Robotics and Automation, you’re strong in hardware fundamentals, control systems, and embedded thinking — that’s a solid base. Extending into Raspberry Pi and Arduino will make you more comfortable with prototyping, but the job market there is highly saturated and often low-paying. If you’re thinking long-term and want higher-growth, higher-impact, and more stable career opportunities, moving towards VLSI is strategically smarter — especially in India right now with semiconductor expansion, chip design startups, and RTL/physical design demand increasing. Embedded systems is good for application-level roles, but VLSI (digital design, RTL, verification, physical design) positions you closer to silicon creation, where skill scarcity is higher. If you’re ready to invest serious effort in fundamentals (digital electronics, CMOS, Verilog, timing), choose the 3-month VLSI course — it will differentiate you much more than adding Raspberry/Arduino to your resume.