Motorola R1225 MMDVM Guide
DB25 on RKR1225 Cable
This cable is used on the RKR1225 if it is equipped with the factory cable that goes from the 16 pin accessory Connector
| R1225 DB25 | RB STM32-DVM DB9 | Signal |
|---|---|---|
| 3 | 5 | PTT |
| 7 | 8 | Ground |
| 11 | 6 | RX Audio |
| 12 | 9 | +12v |
| 16 | 2 | TX Audio |
16 Pin Acessory Connector Cable
This cable is used on a R1225/GR1225 in a non rackmount enclosure or if your RKR1225 doesnt have the DB25 pigtail
| R1225 Accessory Pin | RB STM32-DVM DB9 | Signal |
|---|---|---|
| 3 | 5 | PTT |
| 7 | 8 | Ground |
| 11 | 6 | RX Audio |
| 12 | 9 | +12v |
| 16 | 2 | TX Audio |
MMDVM Setup
Once you have your pi booted up and know the ip address of it login to it via ssh using
ssh pi@ipaddress
Now its time to update the pistar install
sudo pistar-upgrade
Give it some time to complete it could take a few minutes to update
Configuring Pi-Star WPSD
once it is back at the prompt open the web interface in your browser by going to http://ip.add.res.s/
youll need to select configuration in the menu. It will ask you for a username/password. by default it is pi-star/raspberry
General MMDVM Settings
You will need to set your repeater callsign under Callsign
You will need to enter your repeater's DMR-ID under DMR/CCS7 ID
Select Duplex
Enter in your RX & TX Frequencies
Select the Modem Type (for the repeater-builder stm32-dvm it is STM32-DVM/MMDVM_HS)
Set your time zone
and select Apply changes
Location & hotspot settings
Enter in your Latitude/Longitude
Enter in your Town
Enter in your Country
Enter in a URL if you want too
Select Apply Changes
MMDVMHost Modem Settings
Select DMR Mode (for DMR only repeater)
MMDVM Display Settings
Select your display type if youve added one to the MMDVM Board (OLED/Nextion etc)
DMR Settings
Select your brandmeister master
enter in your repeaters password from the brandmeister portal
TGIF Settings
Settings that will need to be changed for this specific radio
TX Invert will need changed to 1