The hardware kits used in the current project was detailed as follows
1) Seeed Studio XIAO SAMD21
The Seeed Studio XIAO SAMD21 is the smallest member of the Seeeduino family. It carries the powerful ATSAMD21G18A-MU which is a low-power microcontrollers. On the other hand, this little board has good performance in processing but needs less power. As a matter of fact, it is designed in a tiny size and can be used for wearable devices and small projects.
Figure: Seeed Studio XIAO SAMD21 MCU
Seeed Studio XIAO SAMD21 has 14 PINs, which can be used for 11 digital interfaces, 11 mock interfaces, 10 PWM interfaces (d1-d10), 1 DAC output pin D0, 1 SWD pad interface, 1 I2C interface, 1 SPI interface, 1 UART interface, Serial communication indicator (T/R), Blink light (L) through pin multiplexing. The colors of LEDs(Power,L,RX,TX) are green, yellow, blue and blue. Moreover, Seeed Studio XIAO SAMD21 has a Type-C interface which can supply power and download code. There are two reset button, you can short connect them to reset the board.
Figure: Seeeduino XIAO pin diagram
for more details on Seeed Studio XIAO SAMD21 visit https://wiki.seeedstudio.com/Seeeduino-XIAO/
2) Grove - Flame Sensor
The Grove - Flame Sensor can be used to detect fire source or other light sources of the wavelength in the range of 760nm - 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy, the sensor is sensitive to infrared radiation. In fire fighting robot game, the sensor plays a very important role, it can be used as a robot eyes to find the fire source.
Figure: Grove-Flame sensor
Specifications
| Item | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Voltage | 4.75 | 5.0 | 5.30 | VDC |
| Current | / | 20 | / | mA |
| Range of Spectral Bandwidth | 760 | 940 | 1100 | nm |
| Detection range | 0 | ~ | 1 | m |
| Response Time | 15 | μS | ||
| Operating Temperature | -25 | ~ | 85 | ℃ |
Features
- Grove Interface
- High Photo Sensitivity
- Fast Response Time
- Easy to use
- Sensitivity is adjustable
The module is mainly used to detect the infrared light. It outputs digital signal LOW and HIGH through a Comparator output. The output value will be LOW when infrared light is detected. And the sensitivity is adjustable by the precision potentiometer.
For more details on the Grove-Flame sensor visit to https://wiki.seeedstudio.com/Grove-Flame_Sensor/
3) Water sprayer Motor Pump
A DC motor pump is used to spray water on the fire to blow off the catching fire at the starting stage.
4) Servo motor
The servo motor help to scan the fire presence and if fire is detected then water motor pump will be ON.
Block diagram of the device is shown in below figure
connections of the device and components are shown in below figure
Once the hardware is designed then Program is uploaded to function the device correctly.