For my work, I used USBizi100, for the brain of my project.
Project:
- Have 2 Transceivers in rear of helico, with one big battery for use the transceivers when helico is on the ground ( Radios autonomous ), and all commands are in front of helico.
- In flight, the helico, must charge the battery and provide energy for transceivers.
- All the audio is interfaced with the helicopter intercom. The pilot can even talk on the transceivers.
3 PCB:
- 1 ,front , Head (remote) with USBizi100, Audio for headset, etc…
- 1 ,rear ,Driving Tranceivers (Channels, Audios Levels) and Charger
- 1 ,rear ,Converter/Charger (Helico in 28V / Tranceivers in 12V)
For this project, I used, some intresting components.
ADS7830:
8-Bit, 8-Channel Sampling ANALOG-TO-DIGITAL CONVERTER, for mesure, voltage and consumption.
MCP23018:
16-Bit I/O Expander, for changing chanels of transceivers and PTT (push to talk).
AD5254:
Quad 256 positions Digital Potentiometers, for audios levels.
24LC256:
256K CMOS EEPROM, for save settings.
82B715:
I2C bus Extender, for link between front and rear.
ALPS EC11B03:
Only, one Rotary Encoder, for remplace, some mechanical potentiometers, and use in dynamical situation.