  With advancements in technology, the smaller versions of satellites have
gained momentum in the space industry for earth monitoring and
communication-based applications. The rise of CanSat technology has
significantly impacted the space industry by providing a cost-effective
solution for space exploration. CanSat is a simulation model of a real
satellite and plays a crucial role in collecting and transmitting atmospheric
data. This paper discusses the design of an Onboard Computer System forCanSat,
used to study various environmental parameters by monitoring the concentrations
of gases in the atmosphere. The Onboard Computer System uses GPS,
accelerometer, altitude, temperature, pressure, gyroscope, magnetometer, UV
radiation, and air quality sensors for atmospheric sensing. A highly efficient
and low-power ESP32 microcontroller and a transceiver module are used to
acquire data, facilitate seamless communication and transmit the collected data
to the ground station.
