I would strongly recommend you read Exploring Raspberry Pi by Derek Malloy https://www.amazon.co.uk/Exploring-Raspberry-Pi-Interfacing-Embedded/dp/1119188687/ref=mp_s_a_1_1?dchild=1&keywords=raspberry+pi+exploring&qid=1590480712&s=books&sr=1-1-catcorr
It is one of very few texts about the platform that treats it with seriously rather than as ...
How to DIY a Rpi based Triple Axis RF Detector using AD8362?
(1) Using 3 AD8362s
You can use 3 AD8362s (in X, Y, Z direction) and 3 ADCs, eg, MCP3008 (or ADS1015) x 3 for Rpi. Analog Devices is hacker friendly to give the PCB layout and BOM.
(2) Using 1 AD8362
You can use 2 little servos, TowerPro SG90 eg, to sequentially position to ...