book

Building iPhone and iPad Electronic Projects

by Mike Westerfield

September 2013

Intermediate to advanced

332 pages

8h 30m

English

O'Reilly Media, Inc.

Read now

Unlock full access

Conventions Used in This BookUsing Code ExamplesSafari® Books OnlineHow to Contact UsAcknowledgmentsCredits
Your Own TricorderA Crash Course in techBASICtechBASIC SamplerRunning Your First ProgramCreating a ProgramThe Accelerometer
The GyroscopeRadians or Degrees?The MagnetometerFaster Sensor ResponseHeadingLocationYour Own Tricorder
The iPhone/iPad MagnetometerThe Earth’s Magnetic FieldUsing the iPhone or iPad as a Metal DetectorConverting the Magnetometer Sample into a Metal DetectorUsing the Metal DetectorFinding Out More
What Is HiJack?Building the SensorExternal Power for HiJackHello HiJackWhen Things Go WrongA Better HiJack ProgramFor More Information
Adding a Moisture Meter to the TricorderAssembling the Moisture MeterCalibrationCollecting the Calibration DataMoving Datafiles to and from techBASICUsing the Calibration DataBetter SoftwareThe Complete Moisture Meter Source
What Is Bluetooth Low Energy?The TI SensorTagWriting Bluetooth Low Energy ProgramsThe AccelerometerWhat’s an Accelerometer?Accessing the AccelerometerUsing the AccelerometerThe SourceThe BarometerAccessing the BarometerThe SourceThe GyroscopeAccessing the GyroscopeUsing the GyroscopeThe SourceThe MagnetometerAccessing the MagnetometerUsing the MagnetometerThe SourceThe Humidity Sensor (Hygrometer)Accessing the HygrometerThe SourceThe ThermometerAccessing the ThermometerUsing the ThermometerThe SourceFurther Explorations
A Bit of Rocket ScienceParts ListsST-1ST-2Other Items for Both RocketsWhy Use a SensorTag?ConstructionST-2: The iPhone/SensorTag RocketST-1: The SensorTag RocketThe Data Collection ProgramSensorTag 8G SoftwareFlight TipsEnginesParachutesFlight ConditionsPower Up!The DataAnalyzing the DataRocket Data AnalysisVelocity and AltitudeRotation and PressureWhat We FoundST-1 ResultsST-2 Results
Controlling a Truck with BLESelecting a TruckDisassemblyHacking the TruckThe H BridgeThe TI ChipWiring the Complete CircuitControlling the Arduino UnoInstalling ArduinoDownloading FirmataInstalling FirmataThe SoftwarePulse Width ModulationState enginesBack to the SoftwareStart Your Engines!
Bluetooth Low Energy Slave ModeBLE ChatSetting Up the ServicesUsing the Services

The Classic Game of PongThe Paddles GameThe Paddle SoftwareThe Paddles Console Software
Worldwide SensorsHTTP, FTP, and TCP/IPWiFlyThe CircuitEstablishing a Network ConnectionCommunication with TCP/IPA Simple Terminal ProgramWiFi ArduinoLoading Software onto the ArduinoThe CircuitCommunication Using the Terminal Program
Servos: They’re Where the Action IsThe Pololu Serial Servo ControllerThe CircuitHalloween HijinksThe SoftwareTake It for a SpinPush and Pull with ServosPomp and Circumstance

Content preview from Building iPhone and iPad Electronic Projects

Chapter 7. Bluetooth Low Energy iPhone Rocket

Prerequisites

Read Chapter 6 first to get a basic understanding of Bluetooth low energy technology and the Texas Instruments SensorTag used in this chapter.

Equipment

You will need an iPhone 4S or later or an iPod 5th Gen or later, running iOS 5 or later; a Texas Instruments SensorTag with the CC Debugger; and various parts for building the rockets. An iPad is best for analyzing the data, and can be used with the smaller rocket to collect data. See Tables 7-1, 7-2, and 7-3 for detailed parts lists. You will also need access to a Windows computer to update the SensorTag firmware.

Software

You will need a copy of techBASIC or techBASIC Sampler, the Flash Programmer, and the 8G firmware for the SensorTag. The Flash Programmer and 8G firmware are free downloads.

What You Will Learn

This project shows how to use a SensorTag as a sensor platform. It is used in two rockets, one that carries just the SensorTag and one that carries both the SensorTag and an iPhone as a recording device.

A Bit of Rocket Science

It was a beautiful fall morning as I carefully packed the parachute, slid in the engine, and installed the igniter in my model rocket. I started the data collection program and slid the payload with a TI Bluetooth low energy SensorTag and an iPhone 4S into the payload bay, as shown in Figure 7-1.