User guide for MMDVM_BAT (battery inside)

Basic operations
1, Press POWER button 1s to startup hotspot, wait 30s OLED screen show MMDVM status, when MMDVM service Initialization completed.
2,Press POWER button 5s to shundown hotspot.
3,Press POWER button 3s to reboot hotspot.
4,Double press POWER button to open the LED Flashlight lamp, double press to close

It takes about four hours to charge to 100%.（Ensure input charging 5V1.3A~2A)
It can supply power for about 20 hours.
Automatic shutdown hotspot during charging

Youtube video 

How to connect to your Wifi router

https://youtu.be/HrpTJDGfPxg

 （Duplex HS external SMA ANTs, 0.1 watt, 4 meters distance with wall barrier

 just for reference!）

Update: from now I use Raspberry 3B HAT replace Zero HAT; Purpose: large place to obtain low BER.

Battery install sample if you DIY yourself.

Take care the + - poles ! ! First full turn off the hotspot after pressing for 5 seconds, then soldering , otherwise it will burn your device! 

More videos sharing 

Check out this model $80
https://www.bi7jta.org/cart/index.php?route=product/product&path=59_74&product_id=75

OLED setting for Pi-Star

1, Rotate 180 degree

running effect

Setting step

 You can get one in www.bi7jta.org/cart

2, the type for 0.96 inch and 1.3 inch 

3, show OLED patch by KI9H

https://github.com/bi7jta/MMDVM_SCRIPT

Set DMR Static Talkgoup in BM Network and Pi-Star

In brandmeister network

In Pi-Star

for reference: https://brandmeister.network/?page=rep-edit&id=460006012

XLXd reflector user guide in Raspberry Pi

Reflector

Client

Not complete, continue ...
Reference information https://github.com/bi7jta/XLX_CN

PI-STAR API for NEXTION,#MMDVM

API DOC
Not found,  but you can find the code define from G4KLX Project

https://github.com/g4klx/MMDVMHost/blob/master/Nextion.h
https://github.com/g4klx/MMDVMHost/blob/master/Nextion.cpp

Flash Nextion Firmware online(ssh),

thanks Peng Hui Ping VR2VYE provide this method ,from now not need TF Card. Video demo follow my facebook status and the end of this article.

First publish in https://www.facebook.com/winters.cn/posts/1620668804697067

*Now not support board 4 PINs header output mode, Pi-Star setting Nextion (Modem)

Prepare tools

1x USBtoTTL Adapter, such as CP2102, PL2303 model

require pyserial runtime

How to do

1) login ssh mode:

http://pi-star:2222

default login

usr: pi-star

pas: raspberry

Copy the follow RED text ,then Ctrl+V, and press ENTER,

Notice that rpi-rw, sudo su , su pi-star, just support one line one time

#Change system to Read and Write

rpi-rw

Step 1, Install require runtime . VERY IMPORTANT!

sudo su; 

rpi-rw; 

cd /tmp;

git clone https://github.com/pyserial/pyserial.git;

cd pyserial;

python setup.py install;

#When install  runtime complete,change to pi-star user

su pi-star

cd /home/pi-star

#Download nextion.py

wget https://raw.githubusercontent.com/g4klx/MMDVMHost/master/Nextion_G4KLX/nextion.py

Step 2, download Nextion firmware (*.tft not *.HMI)

#Download Nextion firmware to current directory

#for 4.3 inch NX4827T043

wget https://github.com/nano-mmdvm/Duplex_hotSPOT/raw/master/nextion/NX4827T043_G4KLX_ShowIP_by_BI7JTA.tft

#for 3.2 inch NX4024T032

wget https://github.com/nano-mmdvm/Duplex_hotSPOT/raw/master/nextion/NX4024T032_G4KLX_ShowIP_by_BI7JTA.tft

Step 3, flash use command 

#5) Stop MMDVMHost serice

sudo pistar-watchdog.service stop; sudo systemctl stop mmdvmhost.timer; sudo systemctl stop mmdvmhost.service

#6)Flash to /dev/ttyUSB0

python nextion.py NX4827T043_G4KLX_ShowIP_by_BI7JTA.tft /dev/ttyUSB0

#Flash to /dev/S2 when using modem,4 PINs header

Now not support

#7) Startup MMDVMHost service

sudo pistar-watchdog.service start; sudo systemctl start mmdvmhost.timer; sudo systemctl start mmdvmhost.service

Testing Show in Spectrum and other way

ZW_SPOT HAT for RPi Zero W

https://www.bi7jta.org/cart/index.php?route=product/product&path=59_64&product_id=69

Continue update ...

More follow my 

Facebook homepage https://www.facebook.com/winters.cn

Twitter homepage https://twitter.com/Winters_CN 

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

Bluetooth Adapter for Nextion User guide

Can also use USBtoTTL adapter

Test: 

AT 

Set Master

AT+ROLE=M

Set Slave
AT+ROLE=S 

Set Baud

Send:AT+BAUD2
Return:OK2400 ,support:
1--------- 1200
2--------- 2400
3--------- 4800
4--------- 9600(Default) 
5--------- 19200
6--------- 38400 
7--------- 57600 
8--------- 115200 
9--------- 230400 
A--------- 460800 
B--------- 921600 
C--------- 1382400 

  

Linux Base Operate and PI-STAR Operation System

1) Re install VIM

Enter ssh mode for PI-STAR
http://pi-star:2222/
Login as
usr: pi-star
pas: raspberry

1, re-install the purge VIM (poor version)
sudo apt-get -y remove vim-common;
sudo apt-get -y install vim  

2) Pi-Star enter root mode

root account without passowrd use "sudo su" 

3) Pi-Star install XLXd reflector

Other:

Suit OS: Debian, Armbian, Raspbian

Scan WiFi

pi-star@pi-star(ro):~$ sudo iwlist wlan0 scan  | grep SSID
                    ESSID:"888888-2G"
                    ESSID:"TP-LINK_A4F2"
                    ESSID:"TPGuest_755569"
                    ESSID:"Fan"
                    ESSID:"OGLO"
                    ESSID:"vanilla"
                    ESSID:"888888-8G"
                    ESSID:"CMCC-vanilla"
Add WiFi :

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf  
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev 
update_config=1
ap_scan=1 
fast_reauth=1 
country=JP     
network={             
        ssid="888888-2G"     
        psk="0123456789"           
}                         

MMDVM Repeater User Case Motorola #MTR2000

IW6BFE

IS0XDA

the circuit diagram and the value of capacitor used to drive the TX Audio of MTR2000

Repeater MMDVM guide by BI7JTA
https://mmdvm.bi7jta.org/2018/04/about-nano-mmdvm-repeater-kit-board.html
Motorola MTR2000 and MMDVM

http://www.repeater-builder.com/motorola/mtr2k/mtr-index.html