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Cutting-Edge Satellite Technology

The HUNITY satellite integrates multiple sophisticated subsystems working together to enable scientific research and technology demonstration in space.

Electric Power System (EPS) PCB TopElectric Power System (EPS) PCB Bottom

Electric Power System (EPS)

  • RP2040 microcontroller
  • 3.3 V regulated voltage generation
  • 6 channel MPPT (solar maximum power point tracking circuit)
  • Incoming and consumed power (current and voltage) telemetry
On-Board Computer (OBC) PCB TopOn-Board Computer (OBC) PCB Bottom

On-Board Computer (OBC)

  • RP2040 microcontroller
  • On-board systems data collection and storage
  • Task scheduling
  • Generate normal telemetry
Battery + Sensor Data Logger (BAT) PCB TopBattery + Sensor Data Logger (BAT) PCB Bottom

Battery + Sensor Data Logger (BAT)

  • RP2040 microcontroller
  • Battery protection
  • Sensor data acquisition
  • Orientation determination
  • Satellite position calculation SGP4 algorithm
GPS + RadNano (GRS) PCB TopGPS + RadNano (GRS) PCB Bottom

GPS + RadNano (GRS)

  • RP2040 microcontroller
  • Space qualified GPS
  • 27G Radnano total ionizing radiation meter
Communication (COM) PCB TopCommunication (COM) PCB Bottom

Communication (COM)

  • RP2040 microcontroller
  • Stand-alone power supply
  • Reprogramming of images/subsystems
  • 437,390 MHz (12.5 kHz UL, 20 kHz DL)
Active Magnetic Orientation Control (ACMAG) PCB TopActive Magnetic Orientation Control (ACMAG) PCB Bottom

Active Magnetic Orientation Control (ACMAG)

  • RP2040 microcontroller
  • Three-axis electrical coils
Active Rotating Mass principle Orientation Control (ACMOT) PCB TopActive Rotating Mass principle Orientation Control (ACMOT) PCB Bottom

Active Rotating Mass principle Orientation Control (ACMOT)

  • RP2040 microcontroller
  • Reluctance motor
  • Operates along 3 axes
Sun and Horizon Sensor (SUN) PCB TopSun and Horizon Sensor (SUN) PCB Bottom

Sun and Horizon Sensor (SUN)

  • 16x12 matrix far infrared sensor
  • 4 directions, per direction 110° × 75° field of view
Pi Pico and FPGA experiment (PIF) PCB TopPi Pico and FPGA experiment (PIF) PCB Bottom

Pi Pico and FPGA experiment (PIF)

  • Science promotion with Pi Pico
  • FPGA IC testing
Solar Cell Life Tester PCB TopSolar Cell Life Tester PCB Bottom

Solar Cell Life Tester

  • Azurspace GaAs (3 and 4 layers, Germany)
  • YimSpace GaAs (3 layers, China)
  • Anysolar Si mono (1 layer, South Korea)
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