Keuwlsoft Electronics


With the growth of Arduino, Raspberry PI and other rapid development systems, what can be achieved by makers, hobbyists and professionals in a short time frame is impressive. Keuwlsoft is adding to this area with its Bluetooth Electronics app. Ideal for rapid prototyping a new idea, learning electronics in a fun way, or exhibiting your electronics project.

Keuwlsoft has only recently branched out into electronics, but we already have a selection of demos to help you get started with linking the Bluetooth Electronics App to Arduino.

You undertake any electronic project at your own risk. Please be careful.

Bluetooth Electronics App with Arduino Examples:



LED Brightness pwm led demo image

This example demonstrates the slider elements from the app. Pulse Width Modulation (PWM) is used to control the brightness of three LEDs. Arduino Uno and a Bluetooth HC-06 module are used.


RC Car Demo rc demo image

This example demonstrates how to communicate to an Arduino with an HC-06 Bluetooth module using the button controls within the app. To make it more interesting, we used these buttons to control relays which connected power to the motor/solenoid of an old RC car.


Persistence of Vision persistence of vision demo image

This example demonstrates a cool effect that can be achieved with a line of LEDs turned on and off rapidly. An Arduino Nano and an HC-06 Bluetooth module were used.


Repeater Demo repeater demo image

Uses two Bluetooth HC-06 Modules to create a repeater, such that anything received on one of the modules is passed onto the other. Demonstrates the software serial on the Arduino, and the terminal controls on the app.


Ultrasonic Distance Sensor Demo ultrasonic distance sensor demo image

An HC-SR04 ultrasonic distance sensor is used to measure distance and send the information via an HC-06 Bluetooth module to the app. The light indicator on the app will change colour depending on the distance measured.


Mega Monitor mega monitor demo image

Monitors the digital and analogue inputs on an Arduino Mega. Uses an HC-06 Bluetooth module to connect to the Android device. Demonstrates the graph feature of the app.


Uno Monitor uno monitor demo image

Monitor the Analogue and Digital Inputs on the Arduino Uno. An XBee HC-06 Bluetooth module and shield are used to provide the Bluetooth Connection.


Temperature and Humidity DHT11 demo image

A DHT11 temperature and humidity sensor is read using an Arduino Uno. An XBee HC-06 Bluetooth module and shield are used to send the results to the app to be displayed on temperature and bubble gauge indicators.


Configure HC-06 Demo HC06 config demo image

This example demonstrates how to change the baud rate and other settings on an HC-06 Bluetooth module. Two modules are required, one to communicate to the app and the other to be programmed with the Bluetooth AT commands


Stepper Motor Control Demo stepper motor demo image

Two stepper motors are controlled either by the accelerometer on the Android device, or pad control elements in the app. Two 28BYJ-48 Stepper motors are controlled with ULN2003 drivers and and Arduino Uno.


LED Ring Demo led ring demo image

A NeoPixel Ring is controlled using an Arduino Uno connected to an Android device using an XBee Bluetooth module and shield.




More Arduino Examples:



Temperature and Humidity Meter temperature and humidity meter examnple image

A DHT22 temperature and humidity sensor is combined with an LCD display to create a basic temperature and humidity meter. The maximum and minimum values are stored and shown when a button is pressed.