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 

  

Add Bluetooth connector between Nextion and Duplex hotspot

Purpose:

Use HC05 instead of USBtoTTL Serial port

Preview:

New update see http://mmdvm.bi7jta.org/search/label/Bluetooth_SettingGuide

Flash Nextion Firmware update 2020

Nextion firmware (Model8) 

Model8 requirement

Pi-Star 4.1.2 and update to the last

MMDVM Display Type:  Nextion Layout:ON7LDS L3,

Nextion-editor ,to change your display style 

https://nextion.itead.cc/resources/download/nextion-editor/ 

Format tools:

https://www.bi7jta.org/files/PiStarTools/SDFormatterv4.zip

Download

1. Local , output for Nextion T serial (4MHz memory), clone from PD0DIB 

https://www.bi7jta.org/files/MMDVM_Nextion/

 2. PD0DIB homepage, you can modify use editor
https://github.com/PD0DIB/Nextion_HAM-radio-screens

2. G4KLX, the original project

https://github.com/g4klx/MMDVMHost/tree/master/Nextion_G4KLX

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

Flash firmware use SD card (TFcard)

Youtube demo: https://www.youtube.com/watch?v=cPOL8UedAGA

How to output different Model tft file?

What is the difference between Nextion and TJC?

Detail: https://www.bi7jta.org/shop/duplex-hotspot-model-a-3d-white-5inch-33

If you not edit/Develop the display content yourself , TJC is enough for use, but use Nextion Model,  you will find more resource in Facebook group https://www.facebook.com/groups/Nextion.

K Serial with More storage capacity, RAM

TJC-Chinese Editor

Nextion-English-Editor

Preview :

https://www.bi7jta.org/shop/duplex-model-a-alc-spot-nx-mmdvm-101#attr=165

https://www.bi7jta.org/shop/duplex-bi7jta-spot-model-a-3d-white-2-4inch-34

Nextion LCD for Nano hotSPOT(BlueBox)

It is very easy to add Nextion LCD for Nano hotSPOT(BlueBox),components:  

1) USB to TTL (Suggest CP2102 or CH340)

2) OTG with MicroUSB Cable power  supply

HS RXD to Nextion TX
HS TXD to Nextion RX
HS 5V   to Nextion 5V
HS GND to Nextion GND

Find the component in AliExpress:

https://fr.aliexpress.com/item/CP2102-USB-2-0-to-UART-TTL-5PIN-Connector-Module-Serial-Converter-New-WAVGAT/32796844759.html

https://fr.aliexpress.com/item/Micro-USB-Host-OTG-Cable-HDD-mobile-hard-disk-with-additional-extra-power-charge-microUSB-cable/32811155296.html

LCD protect Case: （Design by @bi7jta）
https://www.bi7jta.org/cart/index.php?route=product/category&path=68

Nextion LCD for Duplex hotSPOT, RPi hotSPOT with fan, Repeater kit board

For Duplex hotSPOT

The are two ways,

1. Use modem in the hotSPOT board, 

4PIN show "LCD", pi-star Config MMDVM Display Type select Nextion -> Modem
HS RXD to Nextion TX
HS TXD to Nextion RX
HS 5V   to Nextion 5V
HS GND to Nextion GND

for Ver1.0.1( !! VCC,GND not same as Ver1.0)

Pi-Star Setting display type

2. Use USB to TTL adapter,

then in pi-star Config MMDVM Display Type select Nextion -> /dev/ttyUSB0

Note: Some USB2TTL adapt not work, had tested CP2102 / CH340 is OK, USB-STC-ISP do not work.
TTL RXD to Nextion TX
TTL TXD to Nextion RX
TTL 5V   to Nextion 5V
TTL GND to Nextion GND

For RPi hotSPOT with fan

1 Use board 4 PINs Display interface, follow the order.

Warning! Can Not Reversal 5V and GND！

2 Use USBtoTTL Adapter

For Repeater kit board

Just can use USBtoTTL Adapter, STM32F105 without serial interface

Nextion firmware download 

From bi7jta ,add show IP address

https://github.com/nano-mmdvm/Duplex_hotSPOT/tree/master/nextion

From G4KLX

https://github.com/g4klx/MMDVMHost/tree/master/Nextion_G4KLX

From facebook group

https://www.facebook.com/groups/Nextion/

About TJC clone LCD ,you can also find in facebook group