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ContentsAbstractHardware
Tri Axis AccelerometerMicrocontrollerWireless Device
SoftwareMicrocontrollerEnd – User Interface
AbstractTo 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.
Tri Axis AccelerometerWhat is it?Why do I need it?How will I use it?Are there any Special Requirements?
Tri Axis AccelerometerWhy 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.
MicrocontrollerWhat is it?What does it do?Why do I need it?How will I use it?Which One will I useAre there any Special Requirements?
MicrocontrollerConnex 400XM –bt
ADuC7024 Tooth PIC lite 2.1
eZ430-RF2500
[email protected] 60mA@3V 25mA @ 5V 390uA@3V
[email protected] 1mA @3V 370uA@5V 600nA@3V
8grams 8grams 8grams >8grams
16MB 62kby 128kby 32kby
64MB 8kby 3.5kby 1kby
PXA255 Arm7TDMI PIC18LF6720 MSP430f2214
No ADC 12 bit ADC x16
10 bit ADC x 12 10 bit ADC x 12
Class 2 / 10m none Class 1 / 100m 2.4Ghz
Wireless DeviceWhat is it?What does it do?How will I use it?Which One will I useAre there any Special Requirements?
Wireless DeviceBluetooth WifiLow Transfer RangeSmaller RangeMain use between
mobilesSame FrequencyLow Power ConsumptionSmall Module Size
Higher Transfer AmountGreater RangeMain use LANSame FrequencyHigh Power
ConsumptionBig Module Size
MicrocontrollerProgramming 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.