By Conor Smyth

Contents Abstract Hardware Tri Axis Accelerometer Microcontroller Wireless Device Software Microcontroller End – User Interface

Abstract To design & implement the electronics to measure the telemetry from a model rocket. Tri–axis accelerometer Power, Size, Weight. Microcontroller Power, Size, Weight and memory. Wireless Link Power, Size, Weight and Frequency.

Abstract Diameter 2o mm to 25 mm Length 10 mm to 80 mm Weight Less than 30 g

Tri Axis Accelerometer Microcontroller Wireless Device

Tri Axis Accelerometer What is it? Why do I need it? How will I use it? Are there any Special Requirements?

Tri Axis Accelerometer

Why do I need it? Because it will measure the acceleration of the rocket and using simpler linear motion equations the speed of the object and the height of the object. How will I use it? It will connect with the Microcontroller with O/P voltage representing each axis. They will be analogue voltages and there will need to be at least a 4V supply power.

Microcontroller What is it? What does it do? Why do I need it? How will I use it? Which One will I use Are there any Special Requirements?

Microcontroller

Size Weight Power / current draw Memory Compatibility with a Wireless device

Microcontroller Connex 400XM –btADuC7024Tooth PIC lite 8grams >8grams 16MB62kby128kby32kby 64MB8kby3.5kby1kby PXA255Arm7TDMIPIC18LF6720MSP430f2214 No ADC12 bit ADC x1610 bit ADC x 12 Class 2 / 10mnoneClass 1 / 100m2.4Ghz

Wireless Device What is it? What does it do? How will I use it? Which One will I use Are there any Special Requirements?

Wireless Device On board. Compatibility with Microcontroller Frequency Range

Wireless Device Bluetooth Wifi Low Transfer Range Smaller Range Main use between mobiles Same Frequency Low Power Consumption Small Module Size Higher Transfer Amount Greater Range Main use LAN Same Frequency High Power Consumption Big Module Size

Microcontroller End – User Interface

Microcontroller Programming the Microcontroller Embedded C; It can be done in higher levels of code but it wouldn’t be worth all the hard work to implement it. Each Microcontroller has different ways to program it, so each one is a challenge.

End – User Interface Receiving the telemetry from the rocket. Programmed in either Java or Python depending on how fast it can be implemented.