Jumbospot Version 1.7 MMDVM Simplex Hotspot UHF VHF Antenna +OLED+Case Support P25 DMR YSF for Raspberry Pi Hotspot

SKU: 1.7 MMDVM Simplex Hotspot

Price:
$34.99

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In stock

Description

Jumbospot Version 1.7 MMDVM Simplex Hotspot UHF VHF Antenna +OLED+Case Support P25 DMR YSF for Raspberry Pi Hotspot

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

ps:update new FW no oled pwr on message.

Best version on ebay :
 1.Latest version  and the firmware is latest 
 2. original cystal :  Original ECS-TXO-3225-147.4-TR from USA
 3. With white on-board antenna
Features: 
PLS note: the RXofffset is : -475(minus 475)

Note: The product not include the raspberry pi.
 
MMDVM hotspot for raspberry pi
Can work with UHF or VHF
  
Parameter:
- High performance 32-bit ARM processor
- Fully assembled and 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,UHF 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. Please do not upgrade the firmware by yourself,if you have not the knowledge for it.
- Open source 3D printable case available
- Support and tested with PI-STAR
- UHF430-450MHz,433MHZ and 900MHz
  VHF 144 220 Opera FREQ
 
Package List: 
- 1 x Black shell + antenna + OLED (not include the raspberry pi)
We will send you the MDVM hotspot module (new version is can work with UHF or VHF)

 

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