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  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
  • MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay
MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay

MMDVM Relay Board MMDVM RPT HAT Raspberry Pi Relay Expansion Board Supports Digital Relay COD

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                        Introductions:
                         
                        1. This board needs to cooperate Raspberry Pi PI3, orange pie, a variety of school development board to use,Running pi-star image
                        2. This board has been applied in the GM300 GM3188 3688 950I 338 Vitex DR-1X, other types of repeaters and car stations need to be studied yourself
                        new MMDVM Open-Source Multi-Mode Digital Voice Modem For Raspberry Pi 
                        The Raspberry Pi expansion board running the pi-star system supports all digital modes
                         
                        Descriptions:
                         
                        ●The MMDVM is intended to be an open-source Multi-Mode Digital Voice Modem,which utilities the power of an ARM processor and a simple analogue interface board.
                         
                        ●The Multi-Mode Digital Voice Modem is a combined hardware and software development of a modem to handle all amateur digital voice modes. Initially it will support D-Star and DMR,with System Fusion and P.25 coming later,as well as a built-in FM repeater controller.For all modes other than DMR and FM,the modem can be used in simplex or duplex mode,while for DMR and FM full duplex must be used.
                         
                        ●The MMDVM is aimed at the Arduino Due,Teensy 3.1/3.2 and mbed platforms,the only requirement for the hardware is to be ARM Cortex-M3,M4,or M7 based,and access to raw interrupts and ADC and ADC ports as well as digital signalling ports.
                         
                        Fetures:
                         
                        - J2 For Raspberry or MMDVM Mainboard(more stable ,no tf card)
                        - J1 ADD TTL (RX,TX,5V(in),PWR)
                        - STM32F105RBT MCU
                        - ADD NXDN LED
                        - EASY UPGRADE,SHORT BOOT Jumper
                        - Support raspberry 's OLED
                        - Current Does not Support nextion TFT YET!(mmdvm Mainboard and raspberry )
                        - Technical support : jumbospot17.blogspot.com
                        - This board needs to cooperate Raspberry Pi PI3, orange pie, a variety of school development board to use 
                        - This board has been applied in the GM300 GM3188 3688 950I 338 Vitex DR-1X
                         
                        Package Included:
                         
                        1 x Board
                        1 x Moto connection cable
                         
                        FAQ:
                         
                        1. 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.
                         
                        2. what MODE you Tested ? DMR or YSF or P25 I tested is the same.
                         
                        3. Does i need test Using MMDVMCal Program?If You Tested Fail,The great 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!
                         
                        4. 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 .






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