Ideal Shunt Value: $R_{shunt} = \frac{V_{shunt\_max}}{I_{max}}$

Required Gain: $A_v = \frac{V_{ADC\_max}}{V_{shunt\_max}} = \frac{V_{ADC\_max}}{I_{max} \cdot R_{shunt}}$

Power Dissipation: $P = I_{max}^2 \cdot R_{shunt}$ (Select a resistor rated for at least $2 \times P$)

Resolution: $I_{LSB} = \frac{V_{ADC\_max}}{2^N \cdot A_v \cdot R_{shunt}}$ (where $N$ is the ADC bit depth).