Voltage Detector is my first Android application. Using the internal magnetometer I am able to detect an alternating current, like what is running through your walls.
2 channel servo control from an Android phones head phone was a concept I created from July 1, 2015 – July 7
The application generates a stereo phase modulated PWM signal through the phones head phone jack.
Inside the project box is a bread board with power and signal wire connection, no other electronics are used to control the servos.
4 pole TRRS plug that is used to transmit the signal.
After completing the servo control I decided I could use the phones sensor data and servo app to make a stabilized camera.
I’ve been knocking around the idea of using this application to control an RC aircraft.
DataDisplay was an app request from a friend who needed/wanted to monitor many different parameters on a high performance vehicle. I utilized an Arduino micro for the data acquisition and the smart phone to interpret this data and display it with almost no latency.
A few Screen shots of what the user actually is seeing, all of the objects on the display are dynamic. I’m particularly proud of the floating numbers.
And finally a video of it running, I’m using potentiometers to simulate sensors. During this project I also created a new simple method to send numbers larger than 255 using an 8 bit data rate.
Screen shot of AndroPilot, my most recent project.
AndroPilot utilizes the phone on board audio hardware(as well as a multitude of on board sensors) to generate a low latency PWM signal that can be interpreted by RC servos via the Audio headphone jack. The application can also act as the remote via wifi, if signal is lost by the plane it has the capability to autonomously return to where it was launched as well as loiter and travel via GPS way points.
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