Color centers in hexagonal boron nitride (hBN) have recently garnered significant interest in the field of quantum magnetometry due to their unique properties. With a spin S=1, negatively charged boron vacancies (V_B^-) in hBN can serve as a quantum sensor and provide a spin-photon interface. In this work, we harnessed the scalability and versatility of bulk hBN samples, a characteristic not feasible with 2D hBN, to irradiate them with a He+ beam. Irradiated hBN powder presents stable room-temperature photoluminescence and optically-detected magnetic resonance. Leveraging this scalability, we present a cost-effective solution for advancing magnetic field quantum sensing, enabling the use of economical avalanche photodiodes alongside traditional lock-in amplifier systems on the hBN platform.