The first part of the project CxemCAR is here. There are also the source code for Android (Java Eclipse) and other useful information.
In this article, I will describe the assembly CxemCAR for the Arduino. We can use any Arduino-compatible board: UNO, Nano, Mega, Leonardo, and even based on STM32 – Arduino DUE. I used Arduino Nano V3.
This is a simple project of Android Bluetooth Car with Bluetooth control. This project is open source and multiplatform: Arduino (Processing), STM32, FEZ Panda II (.NET Micro Framework) and may be even Raspberry Pi.
To control the car used Android-device with a built-in accelerometer. Tilt forward – car goes forward, tilt to the left – car turns to the left, tilt back – car goes back. Speed of movement or rotation depends on how much you tilt the device. Sensitivity and value of the tilt set in the configuration Android-apps. Also are provided a normal way to control: the buttons on the screen. In addition to all I implemented the touch control. In version 1.2, I added a new type of control: like virtual steering wheel. Total 4 ways to control the RC Car.
This article describes the organization of communication via Bluetooth between the microcontroller STM32 (used board STM32 Value Discovery) and any Android-powered device (smartphone, tablet, etc.). As the example shows LED control from the tablet, and sending messages back to Android from STM32 board.
As a Bluetooth module uses cheap Chinese module HC-06, which has been considered in this article.
There is an inexpensive device MLX90614 (Datasheet PDF) – Infra Red Thermometer in TO-39. It’s intended to measure the temperature ranging from -20°C to +120°C. Measurement accuracy is ~ 0.5°C. Bus connection: SMBus. Price sensor on AliExpress or other online stores is $ 15-20.
I decided to make a DIY intervalometer for my Sony NEX 5N camera so that I could do time-lapse photography. This intervalometer should work with most Sony cameras: NEX, Alpha and other. To work intervalometer used infrared LED
In this article we will discuss how to do two-way data transfer between Android and Arduino in MicroBridge mode (ADB over USB). We will make a simple circuit using a Ultrasonic Distance Sensor and Piezo Buzzer.