<<>> By: Jerod Michel You never know when you might need a robot to do some dirty work such as information gathering and/or attacking enemies. Here are instructions on how to make a robot which can trasmit long-range audio/video to a non-stationary, remote control with screen, take aim, and fire! This is the ultimate poor man's robot weapon! Ingredients: 1) 1 small tv with RCA (red, yellow, white cables) 2) 1 small camera and/or microphone with RCA 3) 1 audio/video transmitter/receiver with RCA 4) 2 12 volt 5 amp batteries (the smaller the better) 5) 1 RC car that is not a piece of shit but also not too expensive. e.g. bought at toys r us. 6) 1 DC motor that is 12 volt 5 amp (and strong enough to pull gun's trigger) 7) TIP 120 Transistor 8) 1N4004 diode 9) 1k ohm resistor 10) 1 button or switch 11) 1 light-weight pistol with sensitive trigger (small calibre plastic glock) 12) 1 lazer-pointer 13) 3 or 4 feet of sturdy string (kite string or shoelace is fine) 14) strong glue such as super or some kind of industrial Difficulty: Medium Preparation Time: 3 hours appx. Concept: We are going to set up a covert audio/video device whcih runs on batteries. Then we will mount the gun and lazer to the rc car, and obtain use of the rc car's extra channel (almost all rc cars have this) by a simple hack to remotely fire the gun. THen the finished project will be an armed robot with mic and camera whose remote control is the rc car's control attached to the small tv and the switch to fire the gun. Steps: FIRST Make covert audio/video device using materials 1 - 4 as follows. Connect necessary power plugs to batteries, i.e. to be able to connect one battery to the tv and receiver and to connect the other battery to the camera/mic and transmitter. Now, as long as the receiver, transmitter, tv, and camera are all powered properly by the batteries, all that remains is to connect all of the RCA cables in the right places -- red to red -- white to white -- etc. SECOND We will hack the rc car for its extra channel using materials 5 - 10 as follows. Using the same battery from the covert audio/video device, connect positive wire to from battery to positive pin on dc motor. Connect negative pin on dc motor to C pin on the TIP 120. Connect 1N4004 diode to also to the C pin - dc motor connection. Hack the rc car for its RX2 chip (or its equivalent) which should have 16 pins. Locate pin #12 and and connect it to one end of the 1k ohm. Connect the free end of the 1k ohm to B pin on TIP 120. (see diagram below) Almost finished with this step. We still need to get remote access to that channel. Now open up the rc car's remote control and locat its TX2 chip. This should look similar to the RX2 and also have 16 pins. Locat pin #6 and connect it to the button (or switch). Test the switch and make sure it turns the dc motor. \\\ | | _______ |___________ -| |- |- | -| |- | Battery | -| |- | | -| RX2 |- diode |+__________| -------| |- 1N4004 | | -| |- | |__________ | -| |- | |+ |_ 1kohm -|_______|- \/ | DC motor | |_ | | | |_| |_______ _________|______|-_________| | | _______ _|____|_____| | | B C E| | | | | | | \\\ | TR120 | | | | | | | |_____________| THIRD We will arm the rc car with the pistol using materials 6, and 11 - 14 as follows. First make a reasonable mount for the pistol on the chassis of the rc car. This can be done by using small vices, wood, tape and/or glue. Your design will depend on the shape of the chassis. Use your imagination! With the pistol mounted (at a reasonable angle), also mount the dc motor so that its gear is approximately 1 inch from the gun's trigger. Cut a piece of string that is about 12 inches long. Tie one end of the string to the gear of the dc motor tightly. Put the other end of the string through the gun's trigger guard, around its handle, then return it to the dc motor's gear and tie it also to the gear. Apply super glue to the knot and the motors gear to ensure it will not easily slip. Now when the motor is activated via the rc car's extra channel, it should twist the string applying pressure to gun's trigger until the gun fires. If this is done carfully with very slick string, and both forward and reverse directions are employed via the rc car's extra channel, you can empty the gun's entire clip. FOURTH Lastly we will put everything together and 'tie up some loose ends'. First get some kind of material on which too consolidate all of the following: the small tv screen, the rc remote, the button for the extra channel, the reciever, and the battery for the reciever and tv. This will be the hand-held remote control for the robot. Then mount the transmitter, camera/mic and battery to the rc car, and attach the lazer pointer to the barrel of the pistol (you might want to make sure the lazer is lined up well with the gun's shots first by testing a few rounds). Tie up any loose wires with electrical tape and zip ties, and make a body for the robot to hide its capabilities, and enjoy. _________________________________________ | ______________________________________ | || | |-------| || | | r | camera/mic || | | e | | || | | c | | || | | e | __________ | || small tv | | i | 0 lazer | _|___ || | | v | __|__________|___________| |__________ || | | e | () pistol |___| | | | | | || | | r | | ()___ | || | |-------| |___________________________ _ __ \ || | | ___| transmitter | \ | \ \ _____ ||______________________________________| | // |___________________|__\___\ \_______ / \\ |_________________________________________| ___|| o | battery | \ _____| o || ________________________________________________ // \\ __|__________________________|______// \\_____// | ______________________________________ | || o ||-----------------------------------|| o ||------ || | | \\_____/ \\_____// || hacked rc remote | | ------ ------ || __________ __________ | |_____ || | __ | | | | |__o__| || | | | | | ______ | | | | || | | | | | |______| | | | | || | | | | | | | | gun || | |__| | | | | |switch || |__________| |__________| | | || | | || | | ||______________________________________| | |_________________________________________| | | | battery | |______________________|