A Team – Prototype II Final Report: Micro Cyber Watch Dog


The objective of this project is to create a wireless micro robot, that will have the ability to aid law enforcement, private organizations or other public safety organizations by giving them the ability to access unknown locations or enclosed areas where there are unkown dangers.  The micro robot will also give them the ability to access places not accessable by other means.  It will also have the ability to surveillance the area (record/transmit video), and provide, or produce audio.

In prototype II we have so far, modify the micro robot from wired to wireless and the micro bot is able to transmit video to a computer. The microbot is wirelessly controlled via a computer using Xbees. The microbot transmits video to a computer via the 2.4ghz frequency.

Parts Used in prototype II (parts from prototype I not included, refer to previous final report):

qty item with link   comments
1 Arduino mini micro-controller    
2 Xbees Pro    
2 3.7V LiPo batteries    
 XX Bunch of Wires, glue, velcro, misc…    
 1 Switch    
 1 wireless camera w/sender    
 1  wireless camera receiver w/usb    
2  capacitors    for protection, optional
1 3.3V voltage regulator    
 1  5V voltage regulator    




Step 0: Get Camera W/Receiver

            a. camera with wireless receiver—> http://www.amazon.com/Wireless-CCTV-Babysitter-Surveillance-Microphone/dp/B001O8TEKY/ref=sr_1_2?ie=UTF8&qid=1366842652&sr=8-2&keywords=2.4ghz+wireless+camera

Step 1: Remove unnecessary plug that includes voltage converter.

            a. use voltage converter of 3.3 V instead.

            b. use smaller generic plug, – +.

Wireless Implementation

Step 0: Get Xbees Pro/Xbees interface, many sources/retailer, suggestions below;

            a.Xbee pro s2b: http://www.mouser.com/ProductDetail/Digi-International/XBP24BZ7SIT-001/?qs=sGAEpiMZZMuJc9I8Ed1ELH6Sa9YHIdJS

            b.Xbee to usb: http://www.mouser.com/ProductDetail/Gravitech/XBee-USB/?qs=sGAEpiMZZMvq007EO%252bXAYbLVB6PkBsZd

Step 1: Using Xbees

            a.configure one of the two xbees as receiver or sender.

            b. Easier to follow tutorial: https://www.loveelectronics.co.uk/Tutorials/7/xbee-tutorial-how-to-set-up-your-xbees

Step 2: Get/Program Arduino mini

            a.we got ours from TOM.

            b. code: arduino mini code in docx file.

Power Supply

Step 0: Get batteries, 2 batteries needed.



Step 0: refer to schematic diagram below.


Functional Diagram


Schematic Diagram 











Main Components Diagram 



We were able to make the micro bot wireless and it can also transmit video which were the goals of prototype II. Now, thinking about the future, surface mounting components, using an Atmel chip instead of the arduino mini and using less thick wires will make the microbot smaller. In the future, we are planning making the micro bot smaller and implementing some of the ideas Sergeant, Kyle Garwood told us that will be useful for law enforcement use. Here are the ideas:

                 1. It would be handy to fit on an officers tool belt.
                 2. It would be useful if it projectile capabilities (e.g. gas, explosives, ammunition)
                 3. SWAT and surveillance operations
                 4. Portable
                 5. Discrete
                 6. Cheap