Motivation

• I want to take pictures of the lightning
• The lightning triggers on the market are very high-priced
• I want to practice my KiCAD skills

Method

• Compared the RF method with the optical method
• Proceed with the optical one due to the response time
• LTSpice simulation of the analog circuit
• Built breadboard circuit to verify analog design
• Ordered and assembled the board to evaluate the response time performance

Limitations

• Low sensitivity to lightning strikes
• Large size due to through-hole components