I take no responsibility for any damage or improper use of this project. M17-related stuff is intended for experienced users and if you think that you are missing some important info, feel free to visit (https://m17project.org/) or ask on official M17 community channels (https://m17project.org/get-started/community).
This fork has been created only for my testing/educational purposes and is not intended as an in-place full replacement of perfect original work by Atten (https://github.com/nakhonthai/M17AnalogGateway) - thanks Atten, you did a great piece of work.
This fork is not regularly supported and consists of features that I need therefore it is not an exact compatible copy of the original. I will backport time-by-time some fixes and features from the original project but only on a non-regular basis. Libraries used in this project are mostly edge versions available, there is no compatibility with the original source code by Atten. Anyway, most of this fork is a copy of the original project with some minor or significant changes.
Thanks, friends for understanding and have fun with M17.
How to Make digital voice radio (M17 Digital Voice) analog gateway yourself over the internet width ESP32 NodeMCU/DOIT/DevKIT Module. The project made M17AnalogGateway convert digital voice with M17 mode to Analog Radio.
- supported hardware: ESP32 module
- almost any analog FM transceiver (Tested with Baofeng UV5R)
- using ESP-Arduino development on Visual studio code IDE
- support M17 mref reflector
- support noise cancel
- support AGC
- using USB serial for host connection and power supply
- support Wi-Fi connection (UDP) to Reflector
- support Web Service config and control system
- display received and transmit a packet on the LED
- display information on OLED display
ESP32DR Simple Circut is a small interface board for connecting to a transceiver.
- PCB size is 64x58mm
- PCB Single size
- RJ11 6 Pin out to Radio (or use DuPont wire pins)
- TODO: VOX circuit
- TODO: debug via serial port
- TODO: do not combine AP + STA mode on wifi
- The gerber data is here
- The PCB film positive is here
- The PCB film negative is here
- The PCB Layout is here
- The Schematic PDF is here
| Reference | Value | Description |
|---|---|---|
| U1 | ESP32 DEVKIT | DOIT ESP32 DEVKIT (โมดูล ESP32) |
| RP2 | 10K | VR 3362W (R sound output) |
| RP1 | 10K | VR 3362W (R sound input) |
| RJ11 | RJ11-6P6C | RJ11 or dupont pins |
| R13,R12,R11,R5,R3,R9 | 1K | R 1K 1/4W |
| R7,R18,R19 | 100R | R 100R 1/4W |
| R6,R2,R1 | 10K | R 10k 1/4W |
| R4 | 3K | R 3k 1/4W |
| R10 | 33K | R 33K 1/4W |
| Q1 | 2N3904 | TUN/NPN (TO-92) |
| LED3 | LED 3.5mm | TX |
| LED2 | LED 3.5mm | RX |
| LED1 | LED 3.5mm | Power |
| L1 | L or JMP | L Isolate or Jumper |
| C11 | 100uF/6.3V | Ellyt |
| C4,C5 | 100nF | Ceramic |
| C6 | 470uF/10V | Ellyt |
| C1,C3,C10 | 100nF or 0.1uF | Polypropylene/Ceramic |
| C2 | 10nF or 0.01uF | Polypropylene/Ceramic |
| D2,D1 | 1N4148 | or use C 0.01uF instead of |
A solder jumper is needed depending on the transceiver.
| Manufacture | RJ11-1 (+VIN) | RJ11-2 (SPK) | RJ11-3 (PTT) | RJ11-4 (GND) | RJ11-5 (MIC) | RJ11-6 (SQL) |
|---|---|---|---|---|---|---|
| Alinco DR-135(DB9) | - | 2 | 7 | 5 | 9 | 1 |
| IC2200(RJ45) | - | SP | 4 | 5 | 6 | - |
| FT-2800(RJ11) | - | SP | 1 | 3 | 2 | - |
| HT Mic Cable | - | SPK | PTT | GND | MIC | - |
for Alinco DR-135(DB9)
for ICOM IC2200(RJ45)
for Yaesu FT-2800(RJ11)
for Handheld (Baofeng UV5R or similar)
- inspired by (https://github.com/nakhonthai/M5DV)
- use MAX9814 Adafruit module (or chinese clone)
- use Baofeng external mike as housing with PTT button
- Pull and Compile by PlatformIO on the Visual Studio Code.
- Connect the USB cable to the ESP32 Module.
- Download firmware and open the program
ESP32 DOWNLOAD TOOL, set it in the firmware upload program, and set the firmware toM17_GW_OM5AST_MOD_SIMPLE_*.bin, location 0x10000 and partitions.bin at 0x8000 and bootloader.bin at 0x1000 and boot.bin at 0xe000. Push theSTARTbutton and hold a few secondsBOOTbutton on your ESP board. Wait for a finish, then reset the ESP board. You can see the state of the module via the serial terminal at115200bps, 8N1, no-handshake - Go to WiFi AP SSID:
M17AnalogGWwith no password and open a browser to the website http://192.168.4.1 - Then change settings according to your needs
- Push the
BOOTbutton after TX and RX led glows for more than 3s to Factory Default - only if you need - If you need to reboot the device, press shortly
ENon the ESP board
- Download from https://www.espressif.com/en/support/download/other-tools
- How-To flash - see example below with firmware installation instructions
- TODO: screenshots of the setup
Name: M17-M17
IP: 152.70.192.70
PORT: 17000
Dashboard: https://ref.m17.link/
Name: M17-AUT
IP: 195.26.215.5
PORT: 17000
Dashboard: https://m17-aut.xreflector.net/
Name: M17-FUR
IP: 45.76.29.81
PORT: 17000
Dashboard: https://ord1.w3fur.radio:17000/
Name: M17-FOG
IP: 95.179.203.54
PORT: 17000
Dashboard: https://m17.ham-radio-fog.org/index.php
Name: M17-NWR
IP: 159.242.127.220
PORT: 17000
Dashboard: https://m17.nwrg.org.uk/