Few days ago I've mentioned in other thread about new project of alternative transmission.
Now - more details.
Universal RC/data transmission module - 434/868 MHz, 500 mW (27dBm) regulated power.
- RF-SMA for antenna,
- PPM in and out
- 9 channels - servo type as in standard RC Rx,
- serial interface - hardware and software compatible with 3DRadio,
- miniUSB - parallel to serial.
Software, after power-on, is "listening" on PPM-in port - if there is correctPPM signal - then "ground module" procedures are activated, if no - "air module".
Configuration - via Mission Planned / 3DRadio config software / dedicated PC/Mac/IOS/Android applications.
RF power regulation - 3-position switch (micro=range check/binding, std=100mW, hi=500mW
RF Module - Dorji DRF4432F27
CPU - STM32F103CBT6.
500 mW, 5.8 GHz video tx with additional functions:
- 3 switchable video inputs: 2 - composite video and 1 HDMI. Switching by standard RC servo-type interface,
- photo camera trigger - IR/relay/OC transistor
RF Module - Airwave
CPU - STM32F103CBT6
Phase 3: Integration.
Products from phases 1 and 2 with some more on single boards:
"Ground" - functions from module phase 1 and: interface for potentiometers and switches/buttons for build stand alone (without RC tx) solution; drivers for antenna tracker - 2 servos/2stepper motors with "polulu protocol" for Mission Planner compatibility, GPS/IMU for antenna position (for moving ground stations), 5.8 GHz diversity receiver, MinimOSD compatible OSD with outputs: "pure video" / video+OSD / OSD only.
"Air" - functions from modules phase 1 and 1 and: output for servo for pan tracking for video tx antenna, GPS module for GPS+Glonass satelites, power measurement (current/voltage) used by video and data transmission, GSM/GPRS for SMS message with lat/lon sending in case of system failure, lost control, etc.
Phase 1 - PCB design almost finished, All parts on the table, Monday will sent it to production - 2 weeks and 5 sets for beta tests will be ready <- betatesters welcome...
Phase 2 - next month - now waiting for HDMI-to-composite IC's for finishing design.
Phase 3 - few units for beta tests - January 214.
All comments, ideas - welcome.
to be continued/updated...