Bamantara EEPISAT Team

The Cansat competition is a design-build-fly competition that provides teams with an opportunity to experience the design life-cycle of an aerospace system. The Cansat competition is designed to reflect a typical aerospace program on a small scale and includes all aspects of an aerospace program from the preliminary design review to post flight review. The mission and its requirements are designed to reflect various aspects of real world missions including telemetry, communications, and autonomous operations. Each team is scored throughout the competition on real-world deliverables such as schedules, design review presentations, and demonstration flights. which provides an opportunity to experience the complete lifecycle of an engineering project. From initial design and integration to testing, launch, and post mission analysis. Participating in this competition also allows us to explore cutting-edge technologies like autonomous systems, telemetry, and video stabilization while representing our institution on a global stage.

Bamantara EEPISAT Team is a research team that focuses on participating in CanSat competitions to build Can-Sized Satellites. In 2020, the team developed a CanSat featuring a container and a science payload equipped with a delta-wing glider capable of circular gliding. In 2021, another CanSat was created with a container and two autorotating maple seed payloads. The container housed electronics to release the maple seed payloads and relay their data to a ground station. By 2022, Bamantara EEPISAT introduced a CanSat design with a payload attached to the container via a 10-meter tether. In 2023, the team designed a CanSat that included a container and a probe capable of deploying a heat shield, which also functioned as an aerobraking device upon release. Finally, in 2024, Bamantara EEPISAT developed a planetary probe designed to carry a large hen’s egg that had to remain intact throughout the entire flight.

in Cansat Competiton 2025 mission, the Cansat design includes a payload and a container mounted on a rocket, with the payload (including the nose cone) resting inside the container during launch. At peak altitude, the container and payload deploy from the rocket using motor ejection, and the container descends at a rate of no more than 20 m/s using an automatically deployed parachute. At 75% of peak altitude, the payload separates from the container and descends at 5 m/s using an auto-gyro descent system. The Cansat features two cameras: one captures the separation and auto-gyro functioning, while the other points downward at a 45° angle, oriented north, with spin stabilization to ensure a steady view of the Earth. The Cansat collects and transmits sensor data (interior temperature, battery voltage, altitude, auto-gyro rotation rate, acceleration, magnetic field, and GPS position) to a ground station at a 1 Hz rate throughout the ascent and descent.

For further details, you can visit the following page: cansatcompetition.com 

CanSat OBDH (On-Board Data Handling) consists of a main processor, STM32F407VGT6 with a maximum clock speed of 168 MHz. We choose this because It has fast boot time, has many GPIOs, and is reliable. Functioning as sensor data acquisition, data processing, actuator control, and communication with GCS.

• BMP280 used to measure air pressure and temperature through I2C communication.
• BNO-055 to measure orientation, rotation speed, and angular speed and can be accessed with I2C.
• H206 Optocoupler to measure autogyro rotation rate.
• U-blox NEO-M8M as a GPS to read latitude, longitude, altitude, and satellite, which can be accessed with serial communication.
• Voltage divider to measure the voltage battery, which can be accessed with an ADC.
• Camera to record video from launch until landing, it can be controlled with digital input.
• Xbee Pro S3B to receive or transmit data with a ground control station through serial communication.
• RTC to give information such as calendar and time, it can be built-in on STM32F407 and supplied with a coin cell.
• Servo Motor to control actuators such as payload separation from container and control gimbal camera, it can control with PWM.
• AS5600 Encoder to give position feedback with a value that reads through a magnet, which can be accessed with I2C.
• SD Card to record flight data.

To design this project, we used KiCad PCB design software. You can see more detailed information on the official KiCad website, which has complete features and is free.

Here is a one of gimbal mechanism prototype demonstration

https://www.youtube.com/shorts/iQpxKILXpXI

Over the years, we have successfully developed multiple projects, including advanced gliding systems, autorotating payloads, tethered payloads, aerobraking devices, and planetary probes. As we gear up for our next ambitious project, we are reaching out to industry leaders like PCBWay to explore collaboration opportunities. We are particularly impressed by your commitment to supporting engineering teams and educational initiatives. Our upcoming project involves cutting-edge payload designs that will require high-quality PCBs for sensor integration, data transmission, and control systems. We are confident that PCBWay's expertise can play a critical role in the success of our mission. We believe a partnership with PCBWay would not only enhance our project's capabilities but also shared commitment to innovation and education in aerospace engineering.