Sunday, May 20, 2018

Firmware upgrade UserGuide for MMDVM HAT(Simplex/Duplex/Repeater) made by BI7JTA

1 ) Duplex hotSPOT by BI7JTA VR2VYE

Original from

The lastest Version is 1.4.4 when update this guide,the newest you can find in github.

There are 3 ways to upgrade,
Make sure you has choose Radio/Modem Type "STM32-DVM/ MMDVM_HS-Raspberry Pi Hat(GPIO)"

How to enter ssh mode:
usr: pi-star
pas: raspberry

1) Use inner upgrade tools in Pi-Star OS

Use official version, build by G4KLX
sudo pistar-mmdvmhshatflash hs_dual_hat

Use VR2VYE build version
#take ver 1.4.8 for example, the newest version visit github

sudo pistar-mmdvmhshatflash-custom mmdvm_duplex_fw.bin 

2) Manual execute upgrade, this way support downgrade version.

Use BI7JTA & VR2VYE build version
Use Andy CA6JAU Version

#1) login ssh mode:
usr: pi-star
pas: raspberry

Copy all follow text ,then Ctrl+V, and press ENTER

#2) Change system to Read and Write
cd ~

#3) Download flash script , take  version 1.4.4 for example
#View the last version available here 
curl -OL

#4) make runable
sudo chmod +x

#5) Stop MMDVMHost serice
sudo pistar-watchdog.service stop; sudo systemctl stop mmdvmhost.timer; sudo systemctl stop mmdvmhost.service

#6) Flash to lastest version

#7) Startup MMDVMHost service
sudo pistar-watchdog.service start; sudo systemctl start mmdvmhost.timer; sudo systemctl start mmdvmhost.service

2)for MMDVM repeater board make by jTA

Update: This firmware is compiled by BI7JTA, use source code from G4KLX 20180822, synchronize with duplex hotspot Ver 1.4.7 

New feature: Support POCSAG mode.

Flash use USB 
Suggest this way,enter flash mode easy then GPIO
1)Use USB mode  
1.1 Disconnect STM32-DVM from the RPi host, GPIO and USB all disconnect,  
1.2 Insert JP jumper, short BOOT and VCC near P25 LED,  
1.3 Connect STM32-DVM to the RPi host use USB wire, then will endter flash mode automatic. PWR, ACT and DMR will bright, not flashing (Very important,if not as I description, disconnect USB and connect again) .  
1.4 Flash use USB (replace your .hex path, and download stm32flash,see Require libs )  
sudo stm32flash -w /usr/src/MMDVM/bin/mmdvm.hex -v /dev/ttyUSB0  
Require libs  

Video Playlist :

Flash use ST-LINK
Buy a ST-Link ,then connect to the board ST-LINK interface, then open STM32 ST-LINK Utility, choose mmdvm.hex,then flash.

3 ) Nano hotSPOT (Bluebox)

sudo pistar-nanohsflash nano_hs
If not successful,some old nano HAT need do more operation,connect the upgrade GPIO jumper.

4)for RPi_Simplex_hotspot  && hotSPOT in LCD make by jTA

sudo pistar-mmdvmhshatflash hs_hat  

Pi-Star OS update and upgrade
sudo pistar-update && sudo pistar-upgrade

About MMDVM Repeater board by BI7JTA

G4KLX source code

Wednesday, May 16, 2018

Assembly Aluminum alloy Case for duplex_hotSPOT

Duplex BOX BETA1.0
Also name 
Duplex + Case Integrate, including
Aluminum alloy Case(punch 4 holes)
SMA JumpWire(need 2x pcs,RX/TX)
Assembly cost(Purchase, punch hole, debug )

Maybe a option choose? ↓

New with fan↓

Use USBtoTTL adapter,option, Hot pluggable ↓

 Black and silver grey color↓

With 4G Network USB Dongle↓

Video share by OH1E: Duplex Hotspot build with nextion

Price list

Where to find me?

Saturday, May 5, 2018

All product and my Amateur Radio Toys hardware store

The follow content I will show my project.

Amateur Radio Toys Hardware store

About Duplex hotSPOT   
Feature : support both UHF and VHF,High-quality TCXO
including components:
1x PCB all component soldering, 
2x ANTs 5CM length,
1x 4PINs header connect to Nextion LCD

Duplex HS with Aluminum alloy Case Integrate  
including components:
Duplex hotspot with 2x ANTs
Aluminum alloy Case(punch 4 holes)
SMA JumpWire 12CM (need 2x pcs,RX/TX)
Assembly cost(Purchase,punch hole,debug )

Acrylic "L" Case for Nextion 3.2',4.2'  9.5$
SanDisk SDCard 8G C10
USB to TTL Adapter(CP2012) 
Nextion 3.2' LCD
Nextion 4.3' LCD
Raspberry Pi 3B
USB Power supply wire

About Repeater hotSPOT   
Feature : support both UHF and VHF,High-quality TCXO
including components:
1x PCB with all component soldering
1x Motorola Linker,(suit to GM300/M120/GM338/GM3188/CDM1250/GM340/GM950)
support both UFH and VHF

About Nano hotSPOT  
Just support UHF
BlueBox Package All in One, include components:
----  PCB include 433MHz Ceramic antenna 
---- 1 PCB,433MHz Ceramic antenna,
---- 2 3D shell with OLED hole,inner slim fan,slim heatSink ,
---- 3 nanopi NEO 512M,
---- 4 High quality USB WiFi ,
---- 5 High quality charging cable
---- 8 8G SanDisk SDCard
---- 9 0.96-Inch OLED

About Simplex hotSPOT for RPi with Cool mini fan  
Feature : support both UHF and VHF,High-quality TCXO
including components:
1x PCB include 433MHz Ceramic antenna
1x raspberry fan size 30x30x8mm
1x 1x3 PINs supply 5V or 3.3V power to fan 

About shipping 

DHL Express for many AREA,  16$+
FedEx Express, Recipients be ask to pay extra service charges, not recommended
Postal register 8$+
EMS for remote AREA 16$+  

About payment 

How to use them?

email to 
tell me your requirement, Callsign, Country and ZipCode/Postal. 
Hardware store

Find me

Related articles 


More photos about Nano Series.

CT1HDC,EA2IP(My first overseas users)

Continue update 

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, uninstall the purge VIM (p...