MMDVM Repeater builder BI7JTA'S Google blogger: April 2018

Monday, April 30, 2018

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

Saturday, April 21, 2018

Analysis and Download MMDVM Pi-Star logs

Analysis:

Check pi-star runtime logs,

Part logs Just show time from you open the dialog:
Open http://pi-star/admin/live_modem_log.php
Then Press PTT,

Download full logs file(All MMDVM logs):
http://pi-star/admin/download_modem_log.php

Dynamic Viewing Full logs in SSH mode:
http://pi-star/admin/expert/ssh_access.php

The DMRGateway log, YSFGateway, DSTAR Gateway logs,

ls /var/log/pi-star , use the SCP tool such as WinSCP.exe , Filezilla.exe, MobaXtem.exe ,download it.

NOTE: IF can not visit use pi-star name, use your IP Address instead.

Feedback:
If follow UserGuide

http://mmdvm.bi7jta.org/2018/04/userguide-for-duplexhotspot-only-for.html

Still not solved your problem, not config success, then send me 3 files for analysis, as follow,

1) Pi-star config zip file, export step

2) Screenshot of pi-star ,1,2,3

3) Screenshot of DMR radio (reference to tyt md-380)

4) More shot video can help analysis fast.

to:

1. Use facebook user discuss group.

https://www.facebook.com/groups/nano.mmdvm/

Strongly suggest that because of the UTC difference, I hope more HAMs can help you, not only me, also need you upload some shot videos about your issue ,that will faster to discover your problem.

2. email bi7jta@gmail.com , https://t.me/bi7jta

de bi7jta,73!

Wednesday, April 18, 2018

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

If you need,just send reply this blog or contact my other email bi7jta@gmail.com , leave your Callsign for print, and email for contact. I let my friend place a link in market, use a cheaper shipping channel .

3D print Callsign, 2 colors Yellow and White choose, size

Large：160mm X 29mm cost 8$

Small：120mm X 23mm cost 5$

Shipping cost about 2~3$

Need time to wait print.