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