Step 1: What you will need
-Arduino (Can be any type but must have 5V capabilities to work with Geiger counter and LCD)
-Sparkfun Geiger Counter (Other geiger counter boards might work the same but I do not know)
-9V Battery & Battery Clip
-Project Box ~ (129mm*64mm*45mm)
Step 2: Prep
Also solder wires to the 5V, TX, and GND of the geiger counter.