Mini computer
- 1. MSc Thesis Diploma Portable computer based on single board computer Raspberry PI Author: Yash Sawarkar 232524 Promoter: Dr hab. inż. Artur Wymysłowski
- 2. INTRODUCTION • The raspberry is a well known as a credit card sized single-board computer that can be plug with a monitor and keyboard. It is based on a SOC (system on a chip) technology processor • The main objective of the thesis was to prototype a pocket sized computer using 3D printing technology and avaiable electronic modules, based on Raspberry PI version 2. =
- 3. RASPBERRY PI 2 SPECIFICATION
- 4. PROBLEM STATEMENT • Not portable because of its heavy structure and design, • Need of the dedicated platform, • Because of its design and hardware requirements it is more costly and consume more electric energy, • Repairing and maintaining the traditional computers are costly as comparing to the mini computers, • There is no customization of operating systems according to the task; in portable computer we can design an operating system according to the dedicated task, e.g. embedded system.
- 5. Electrical part Circuit diagram of the system
- 6. POWER BOOST 1000C • It contains load sharing circuit that is able to power the circuit and at the same time the recharging • It can only be used with rechargeable Li-Po batteries • Micro USB input jack is available • Low battery indicator LED • Battery charging indicator LED : yellow and green
- 7. • Lithium Polymer Battery was selected • Advantages: security and a slim structure • Light weight • The hardware uses 3.7V & 550 mAh power ratting Li-Po battery POWER SUPPLIES
- 8. 3D PRINTING • It's a method for fast mechanical prototyping. It's a type of computerized manufacture, which is utilizing a PC controlled device to make a physical object. • We can make a physical duplicate of our ideas in hours, rather than weeks or days The filament based technique to print our 3D model was used: Ultimaker V3 • The print grows from bottom to top, layer by layer until the print is finished
- 9. Mechanical Part 3D view of the enclosure (Base case) 3D view of the enclosure (Top case)
- 10. Assembly Process • Slider switch with the pins that are EN and GND were soldered on the power boost 1000 C. • Li-Po battery with power boost 1000 C was connected through JST connector Battery connected to the power boost 1000 C
- 11. • The system takes 1 hour 30 minutes to charge fully • work continuously up to 51 minutes. • connecting the peripherals devices e.g. mouse, keyboard, WI-FI drivers and USB it worked continuously up to 44 minutes Comparing size of minicomputer with the traditional Testing and validation
- 12. FUTURE SCOPE • Customizing Li-Po battery design • Development based on Raspberry PI zero W • Compact and handy design with increased processing speed • Using 1000 mAh Li-Po battery
- 13. SPACE APPLICATION Sensing elements: •Pressure / Temperature •Humidity / Temperature •Acceleration/Gyroscope/Magnetic field Finding directions
- 14. THANK YOU FOR YOUR ATTENTION