  Nuclear spins in solids offer a promising avenue for developing scalable
quantum hardware. Leveraging nearby single-color centers, these spins can be
efficiently addressed at the single-site level through spin resonance. However,
characterising individual nuclear spins is quite cumbersome since the
characterisation protocols may differ depending on the strength of the
hyperfine coupling, necessitating tailored approaches and experimental
conditions. While modified electron spin Hahn echoes like CPMG and XY8 pulse
sequences are commonly employed, they encounter significant limitations in
scenarios involving spin-1/2 systems, strongly coupled spins, or nuclear spin
baths comprising distinct isotopes. Here, we present a more straightforward
approach for determining the hyperfine interactions among each nuclear and the
electron spin. This method holds promise across diverse platforms, especially
for emerging S=1/2 group IV defects in diamond (e.g., SiV, GeV, SnV, PbV) or
silicon (T-centre, P-donors). We provide a theoretical framework and adapt it
for color-centers exhibiting various spins. Through simulations conducted on
nuclear spin clusters, we evaluate different protocols and compare their
performance using the Fisher information matrix and Cramer Rao bounds.
