Published December 7, 2022 © Apache-2.0

Object detection and obstacle avoidance

Install the objects on the door, and when someone comes, the lights inside will light up to remind the people inside to open the door.

BeginnerProtip5 hours116

Things used in this project

Hardware components

Seeed Studio Seeed XIAO BLE nRF52840 Sense

Seeed Studio Seeeduino XIAO Expansion board

Seeed Studio Grove - Green LED

Seeed Studio Grove - Line Finder v1.1

Software apps and online services

Arduino IDE

Story

Project introduction:

In fact, I had this idea when I was on the way to the bathroom. When I opened the door, I couldn't see the situation inside. So suddenly, if there is a hint, people inside and outside the door can know each other whether there is someone on the other side. Is it possible to avoid the risk of being hit when opening the door.

function：When approaching the door, the sensor device will be triggered, and the light inside will light up to remind the people inside. On the contrary, the people inside will know that there is someone outside when the light is on, and they will open the door carefully

Step：

Step 1: Connect XIAO development board and expansion board, add XIAO rnf52840 in Arduino ide, after installation, use BLINK to test whether it can work normally;

Step 2：Connect each Grove module in turn to test whether it can work properly alone.

Step 3：When there is no problem with the module, upload the required code to the motherboard to complete all operations

Some project codes are as follows：

I found that the small things in life can be facilitated through the help of some modules, but more discoveries are needed.

demo.ino

//------------------------------------------------------------
//Name: Line finder digital mode
//Function: detect black line or white line
//Parameter:   When digital signal is HIGH, black line
//             When digital signal is LOW, white line
//-------------------------------------------------------------
int signalPin =  D5;    // connected to digital pin D1
void setup()   {
  pinMode(D0, OUTPUT);
  pinMode(signalPin, INPUT); // initialize the digital pin as an output:
  Serial.begin(9600);  // initialize serial communications at 9600 bps:
}
// the loop() method runs over and over again,
// as long as the Arduino has power
void loop()
{
  if(digitalRead(signalPin))
  digitalWrite(D0, LOW);   
  else  
   digitalWrite(D0, HIGH);   // display the color
  delay(1000);                  // wait for a second
}

Credits

Sheng Su

1 project • 0 followers

Object detection and obstacle avoidance

Things used in this project

Hardware components

Software apps and online services

Story

Project introduction:

Step：

Some project codes are as follows：

Code

demo.ino

Credits

Sheng Su

Comments

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Object detection and obstacle avoidance

Object detection and obstacle avoidance

Things used in this project

Hardware components

Software apps and online services

Story

Project introduction:

Step：

Some project codes are as follows：

Code

demo.ino

Credits

Sheng Su

Comments

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