Published July 1, 2020 © GPL3+

Interfacing Bolt Wi-Fi module with Arduino

Simple tutorial for interfacing Bolt Wi-Fi module with Arduino

BeginnerProtip30 minutes3,037

Things used in this project

Hardware components

Arduino UNO

Bolt IoT Bolt WiFi Module

Male/Male Jumper Wires

Software apps and online services

Bolt IoT Bolt python library

Story

This is a short tutorial on how to interface the Arduino with the Bolt Wi-Fi module to read data from Arduino or control actuators connected to the Arduino.

I will be demonstrating this by controlling the status of the Arduino's inbuilt LED on pin 13 via Bolt.

1. First, compile and upload the Arduino sketch, provided with this post, to the Arduino.

2. Connect the Tx pin of the Bolt to the Rx pin of the Arduino. Connect the Rx pin of the Arduino to the Tx pin of the Bolt. Connect the ground pins of the Bolt and Arduino

Note: You will not be able to upload the sketch to the Arduino if the Tx and Rx pins are connected. You can optionally power the Arduino using the 5V pin of the Bolt as shown.

Connections

3. Run the python script provided with this post.

4. When the console asks for an input, typing ON or OFF will toggle the mode of the LED on the Arduino

The code for the Arduino sketch and the python script both are pretty self explanatory. It is fairly easy to adapt this code for other purposes.

Note: The parameter for the serialRead for the Bolt is the ASCII equivalent of the last character of the data that is being received (of the data you want to receive). It might be a good idea to set this as 10 which is the ASCII equivalent for the newline character, as most of the values received end with a newline character.

Additional resources:

UART commands for Bolt

Bolt Arduino library

Code

int LEDpin = 13;
String status;
// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  Serial.begin(9600);
  pinMode(LEDpin, OUTPUT);
}

void loop() {
  
Serial.println("what to do? ON or OFF"); //print to serial monitor
while(Serial.available()==0){            //wait for input in serial monitor
  }
  
status=Serial.readString();             //read inout from serial monitor
if (status=="ON"){
  digitalWrite(LEDpin, HIGH);       //Turn the LED on if "ON" in serial monitor
  delay(1000);
  }
if (status=="OFF"){                    //Turn the LED off if "OFF" in serial monitor
    digitalWrite(LEDpin, LOW);      //turn the LED off by making the voltage LOW
    delay(1000); 
  }                   
}

Credits

Interfacing Bolt Wi-Fi module with Arduino

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

bolt_arduino_OyrnlFNtFP.fzz

Code

LED.ino

bolt_arduino.py

Credits

Rid

Comments

Embed the widget on your own site

Interfacing Bolt Wi-Fi module with Arduino

Interfacing Bolt Wi-Fi module with Arduino

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

bolt_arduino_OyrnlFNtFP.fzz

Code

LED.ino

bolt_arduino.py

Credits

Rid

Comments

Related channels and tags