The MAX9611 development board is a handy module for measuring current on the high-side of a power supply. Supply voltage is 2.7-5.5V and has a 60V common-mode voltage limit, so suitable for direct connection to 48V systems/ RF amplifiers etc.
High accuracy 12-bit ADC and I2C output so easy to interface with Arduino/ ESP8266 etc.
This board has a 0.25Ω current sense resistor fitted (can be changed easily).
Please see the datahseet for more details.