Microswitch Board

In the Microswitch Board we have an microswitch witch we detect the obstacle's , the evacuation zone's wall , etc (you can learn more information about it in our programming blog)

Also we detect our alive and dead victim's with this board , we twisted aluminium foil so it will be conductive.

And we can now that the victim is dead or no because dead victim's aren't conductive but alive victim's are, and there is a lots of ways to detect the alive or dead victims for example you can detect them with color but we detect them with their conductivity or un conductivity.

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OpenMV

We had a lots of options to use for detecting the color of Evacuation Points , like OpenMV Camera , APDS9960 , Pixy Camera , We used OpenMV h7 plus to detect the color of the Evacuation Point in the Evacuation Zone. The OpenMV that we used has a 5 megapixel camera and supports several communication protocols including UART, I2C, WIFI, SPI , USB , Bluetooth , etc. To receive information from this camera , we used a 5 pin connector , which includes: VCC , GND and three digital pins. This camera has three microcontrollers named STM32H753, IS42S32800G 6BLI and 25Q256JVEQ-1912.

LCD Board

We used this board to connect our LCD Display (TFT ST7735R) to our robot, Also this board has a gyroscope (GY-25) and a buzzer. The gyroscope is because we need to know if we are on a ramp Our gyroscope (GY-25) can communicate two different type of communication protocol's I2C and USART , we used USART communicating protocol, the accuracy of this module is up to ± 180 degrees.

Main board

All of our electronic boards are connected to Main Board. This board includes: Atmega2560 Microcontroller LM2596 Regulator USB to Serial converter LM2596 Regulator provides the input voltage of our Microcontroller , our battery is 12 Volts but our microcontroller needs 5 Volts. LM2596 is a switching regulator, you may ask yourself why did we used a switching regulator, because linear regulators heat up and for decreasing its temperature you should use a fan , cooling pad , etc. And because they occupy a lots of space we used a switching regulator , they don't heat up to much so it doesn't need a cooler. (regulator's have two types switching and linear) If we use the switching regulator by it own our microcontroller will destroy so we use a electronic circuit to make it like a linear regulator. Switching Regulator Linear Regulator We used ATmega2560 microcontroller it has 256KB flash memory ,8KB ram , 4KB EEPROM memory , 1

Pishnam Electronic