Analog 'Tennis for Two': Building a Retro Game with Op Amps
2025-03-16
This post details the construction of a 'Tennis for Two'-like game using operational amplifiers (op amps). The author leverages op amps' integration and differentiation capabilities to simulate a bouncing ball under the influence of gravity. Clever use of diodes and comparators handles ball bounces and player input. The post thoroughly explains the circuit design, including mathematical derivations, schematics, and oscilloscope waveforms. Challenges encountered during implementation, such as using an LED for damping, are also discussed. The author successfully creates a basic 'Tennis for Two' game and outlines future improvements, such as refined controls and a scoring system.