Nextion Multi-DISPLAY configuration guide

Effect display 

Source  https://www.facebook.com/groups/nano.mmdvm/

     By @BI7JTA

By @F8BSY

@F4EWI

Firmware (.HMI)
PD0DIB  https://github.com/PD0DIB/Nextion_HAM-radio-screens
BI7JTA https://www.bi7jta.org/files/MMDVM_Nextion
F4EWI https://twitter.com/F4EWI_Thierry/status/1076438473387708416

Driver
https://github.com/PD0DIB/Nextion_HAM-radio-screens/wiki/FAQ-Nextion.driver-by-ON7LDS

Connect multiple Nextion displays @on7lds
https://on7lds.net/42/connect-multiple-nextion-displays?fbclid=IwAR15V-c1FHBvgcTwOIBVbBfBOHFOm0bXU3cUi8umRYTotIK_0G0hLtECD6E

NanoPi_NEO Instruction

NanoPi_NEO Wiki http://wiki.friendlyarm.com/wiki/index.php/NanoPi_NEO

Product for MMDVM 
http://mmdvm.bi7jta.org/2018/04/userguide-and-openbox-video-for-nano.html