A major goal in behavioral neuroscience is to identify the neural mechanisms underlying learning and memory. Fear conditioning models, including contextual and cued conditioning, are widely used to assess associative learning in rodents; however, commercially available systems for these experiments are often expensive (> $4000), limiting accessibility and reproducibility across laboratories. Here, we present a low-cost (about $100), modular fear conditioning platform for rodents that enables precise control of experimental parameters while maintaining compatibility with standard behavioral protocols. The fear conditioning system consists of conditioning chambers equipped with stainless-steel grid floors, a custom-built constant-current foot-shock generator, and an auditory cue delivery section, all synchronized with video-based behavioral recording. Shock intensity, duration, and timing are fully programmable, and the platform supports both contextual and cued fear conditioning paradigms.