Things you will need
Raspberry PI with wifi (Zero W, 2W, Pi 3, 3B, 3B+, 4)
MMDVM board (Can be either simplex or duplex
Raspberry Pi accessories (power supply, SD card, case)
DMR, P25, YSF or DSTAR compatible radio

Image your SD card with Pistar or WPSD
Set up the operating system and hotspot software
Find an open frequency on 70cm (430.4125-439.4250)
Use this open frequency on your hotspot
Program this memory into your codeplug and upload to your radio
Verify you can use the hotspot by transmitting in a parrot talkgroup (DMR)
Connect to an active talkgroup. If you can hear it, your hotspot and radio have been configured properly
Adjust you transmit audio to prevent overdriving or underdriving your signal