Pishnam Electronic

 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.

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

This is our Obstacle Board , It contains an IR sensor receiver and transmitter, the transmitter sends IR ray's and the receiver receives it. Our robot detects obstacle's with its Sensor board  but sometimes it think's its Rescue kit, so we designed this board so it doesn't think the obstacle is rescue kit.

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.

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. 

This board connects our robot parts to the Main Board witch our microcontroller is there. As you can see in the picture there is a regulator , two capacitor's and two motor drivers on this board. The regulator that we used in this board is LM2560 linear regulator (this regulator only provides 7 Volts and it doesn't heat up too much so it doesn't need a cooler) and it provides the input voltage of  XL-320 Motor  witch is 7 Volts. And we used L6203 motor driver to provide our  Main motor (L1990)  Voltage and Current. Those capacitors are 1000UF and we used them to reduce volatility, you may ask yourself why didn't we use a 2000UF capacitor instead of a 1000UF capacitor, because a 2000UF capacitor occupies more space.

This board is located on the bottom of the robot and has the task of following the line. Sensor board includes: IR Sensor's Apds 9960's Multiplexer's Ams1117 We used 34 IR sensor's to follow the line, It has a receiver and transmitter , infrared waves are from 300GHZ to 430 GHZ and the length of these waves are from 1mm to 740nm. We could use a lots of things to detect red and green color but we choose APDS9960 Because it was more accurate and cheaper. We used two of them in the robot. Also we used multiplexer's because we didn't have enough pin's, 4051 and 4052 multiplexer's. We used Ams1117 because the input voltage of our color sensor (APDS9960) is 3.3Volts and our battery's are 12Volts so we need to reduce the voltage, you may ask yourself why didn't we use Resistor's to decrease the voltage , because it will be destroyed and we should use a lots of them and it will occupy a lots of space and the main reason is regulators make our voltage