The communications subsystem focuses on the Texas Instruments CC1200RHBR transceiver.
Decoupling capacitors on all power pins
See CC1200EM 420- to 470-MHz Reference Design (SWR122)
Broadband Impedance Matching Question for Dr. Henderson et. al.
Power System
The power system must supply the following VDC levels:
3.3 VDC for Communications and Computing subsystems
5.0 VDC for Antenna System.
[ ] #12
Computing System
The computing subsystem encompasses both the ESP32-C3-WROOM-02-N4 SoC and its peripherals.
Display
OpenRTX supports any SH1107-based display, would work OOB with the Mini17 and Module17 implementation and PCB/schematic.
Other targets use HX8302A, UC1701, ST7567, SH1106 display controllers.
Keypad
They keypad must include DTMF keys and navigation keys for the OpenRTX user interface.
A T9 overlay will be used in place of dedicated A,B,C,D keys in favor of four navigation keys.
Antenna System
Must be suitable for QRP amplification of the Communications subsystem RF power.
All schematics must be Hierarchical Sheets accessible under Cobalt-Cowboy.kicad_sch
Communications System
The communications subsystem focuses on the Texas Instruments CC1200RHBR transceiver.
Decoupling capacitors on all power pins
See CC1200EM 420- to 470-MHz Reference Design (SWR122)
Broadband Impedance Matching Question for Dr. Henderson et. al.
Power System
The power system must supply the following VDC levels:
3.3 VDC for Communications and Computing subsystems
5.0 VDC for Antenna System.
[ ] #12
Computing System
The computing subsystem encompasses both the ESP32-C3-WROOM-02-N4 SoC and its peripherals.
Display
OpenRTX supports any SH1107-based display, would work OOB with the Mini17 and Module17 implementation and PCB/schematic. Other targets use HX8302A, UC1701, ST7567, SH1106 display controllers.
Keypad
They keypad must include DTMF keys and navigation keys for the OpenRTX user interface. A T9 overlay will be used in place of dedicated A,B,C,D keys in favor of four navigation keys.
Antenna System
Must be suitable for QRP amplification of the Communications subsystem RF power.