J2 For Raspberry or MMDVM Mainboard(more stable ,no tf card)
J1 ADD TTL (RX,TX,5V(in),PWR)
ADD NXDN LED
EASY UPGRADE,SHORT BOOT Jumper
Support raspberry 's OLED
Current Does not Support nextion TFT YET!(mmdvm Mainboard and raspberry )
What's in the box:
●1 x Board
●1 x Moto connection cable
After Connect GM3xx ,when power on,LED Flash fast,if your MD380 PTT Press,COS LED will ON,then you must SEE the BER using DEBUG Port,or in pi-star panel,ADJUST RX_R BER is <=2%,Then Test in Parrot you can hear your voice and PTT LED ON ,testing is Finished! It is Very Easy,I Testing Many Times.
FAQ:what MODE you Tested ? DMR or YSF or P25 I tested is the same.
FAQ:Does i need test Using MMDVMCal Program?If You Tested Fail,Best way Using MMDVMCal To Test GM3XX TX-> Mobile Function.
GM3XX RX-> Function It is Easy To Check Just COS(RECEIVE SIGNAL) LED And MODE LED,if Both LED ON ,GM3XX Rx is work!
FAQ:Does i need to change MMDVM.ini ->TX Invent and RX Invent ?that is Also Import,in MMDVMCal TX Testing Mode you can Press I to Invent TX to Ensure Your GM3xx is invent or not .