VHF UHF MMDVM Hotspot Pi-star Support P25 DMR YSF Module + 2.2inch TFT OLED for Raspberry Pi

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LOCKPICKWEBSKU: VHF UHF MMDVM Hotspot Pi-star

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$57.99 $78.99

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Description

VHF UHF MMDVM Hotspot Pi-star Support P25 DMR YSF Module + 2.2inch TFT OLED for Raspberry Pi

Description:
new pi4b need remove R1 Resistor.

STM32_MMDVM_HS HAT Rev1.7 Guide

1.Hardware add (SDA,SCL)R20,R21 Connect stm32 i2c 2 bus to OLED,and raspi.  oled message pwr on without RPI using mmdvm_hs custom fw,and i2c 2 bus.

2.Support i2c communition with raspi

Setting For Pi-star software and raspberry hardware (rpi 0-3) new pi4b need remove R1 Resistor.

Controller Mode:Simplex Node

Radio Frequency : Freq:144-148,219-225,(Main Band)420-475,842-950

Example:438.000000

Radio/Modem Type:STM32-DVM(GPIO)

14.7456 TCXO with RXOFFSET=0 TXOFFSET=0


Default Username: pi-star
Default Password: raspberry 

to support i2c communication change MMDVM_HS code(by Andy Uribe CA6JAU)->Config.h

// Host communication selection:

//#define STM32_USART1_HOST

//#define STM32_USB_HOST

#define STM32_I2C_HOST

to disable i2c 2 to raspi and oled just remove R20,R21  

update new FW: (pi-star / expert / ssh access / user :pi-star pass:raspberry)

sudo pistar-mmdvmhshatflash hs_hat

 
Features
PLS note: the RXofffset is : -475(minus 475)
· High performance 32-bit ARM processor
· Fully tested
· Supports DMR, P-25, D-Star and System Fusion
· Onboard LEDs to show status (Tx, Rx, PTT, Mode)
· Up to 10mW RF power
· SMA antenna connector, Antenna included 
· Mounts cleanly on all current Raspberry Pi's including the Pi Zero 
· The firmware is pre-loaded and is easily upgraded via software. 
· Open source 3D printable case available
· uhf 430-450 MHz ,433mhz and 900MHz
VHF 144 220 Opera FREQ  (not main band)
Package :
 Antenna + MMDVM HotSPOT Module,,
Note:
not include the raspberry pi
The latest firmware is pre-loaded 


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