Wednesday, June 27, 2018

jTA Blog for MMDVM Summary



NANO Series DIY Project for MMDVM


UserGuide for Duplex_hotSPOT_v0721

UserGuide for Repeater Kit Board (LinkerV3)

UserGuide for Nano hotSPOT(blueBox) and Simplex hotSPOT

Firmware upgrade UserGuide_0721 

The way to Analysis and Feedback issue (About Duplex_hotSPOT)

GPIO Definition And Interface Diagram for Nano Series hotSPOT(jTA_SPOT)

Assembly Aluminum alloy Case for duplex_hotSPOT


Nextion LCD for Duplex hotSPOT and RPi Fan HS

Nextion LCD for Nano hotSPOT(BlueBox)

Flash Nextion Firmware Online(without USB Adapt or SDCard)

Youtebe Video

Openbox Video for Duplex hotSPOT

Nano hotSPOT blueBOX unboxing by OH1E


Known Issue and SolutionsIssue

Other product

3D Print CallSign,Copyright by @BG7MQO,continue update

Duplexer preview share by  by my friend

Youtube Video sharing

Wednesday, June 20, 2018

Duplexer preview

>25W, 1.5KG
64USD  +   Actual postage 

My MMDVM youtube homepage

See also jTA Repeater kit board

Saturday, June 9, 2018

Flash Nextion Firmware use SSH mode and USBtoTTL Adapter

Nextion firmware repository 

Nextion-editor ,to change your display style

Format tools:

Firmware download
1) Build by bi7jta , for Nextion T serial (4MHz memory)

2) Supply by PD0DIB Model7 & Model8 HMI file : for K serial, you can modify use editor

3) Supply by G4KLX, the original project

Note: HMI file you need to install Nextion Editor, general the tft bin file.

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
*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:
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

Step 1, Install require runtime . VERY IMPORTANT!

sudo su; 
cd /tmp;
git clone;
cd pyserial;
python install;

#When install  runtime complete,change to pi-star user
su pi-star
cd /home/pi-star


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

#Download Nextion firmware to current directory
#for 4.3 inch NX4827T043

#for 3.2 inch NX4024T032

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 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