Category: Brain Injury∨g=

D.I.Y. Tumbler

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***Do It Yourself*** D.I.Y. Tumbler is a remote control car. This modification allows users with limited fine motor, strength, and grasping abilities use a switch to activate the small buttons on the remote control base. Materials: Tumbler Remote Control Car with 2 button controller; 2x 3.5 millimeters headphone socket. Thin wire (e.g 7strand 0.2 millimeters). Soldering iron (15 to 30 Watt power). Thin solder. Soldering flux. Desoldering braid. Cordless drill with drill bit 6 (1/4 inch). Knife or wire strippers. Small screwdriver set. Step 1: Drill hole SW1 Unscrew and remove the rear battery cover. Remove the three fixing screws at the back of the case (1 is often under some stickers in the battery compartment). Remove the top cover. Make a small pilot hole, using a soldering iron or sharp point. Drill a ¼ inch hole (please refer to website for location of hole.) Step 2: Drill hole SW2 Drill a hole on the opposite side exactly as pictured. SW1 is SPIN. SW2 is STRAIGHT FORWARD. Step 3: Solder 2x sockets As not all sockets are connected alike, you will need to find which 2 of the 3 contacts you need to solder to. Attach a test lamp or multimeter to any 2 contacts. Plug in your switch, and then press it. If the lamp comes on when pressed you have the right connections, otherwise try a different combination. There are only 3 possibilities. Solder two 13 centimeter lengths of wire to the socket. Expose the ends, tinning them if you wish. Repeat this for the 2nd socket. Step 4: Unscrew the board. Unscrew the ariel (top right), and the 2 fixing screws on the board. Note the 2 switches above SW1 and SW2. Step 5: Find the two connections Flip the Printed Circuit Board over and locate the underside of the switches SW1 and SW2. If you have the batteries connected, then touch two encircled points together with a short piece of wire. If you activate the car then you've found the right places. Step 6: Solder. Carefully solder socket SW1 and SW2 to the board as pictured. Blow on the board to cool it down as soon as the solder flows. Too much heat could damage the workings of the radio control unit. Step 7: Reassemble. Tightly screw in the sockets as pictured - avoiding twisting your wiring. Screw the ariel and PCB back in place. Carefully fit the casing back together, avoiding snagging your wires. Step 8: Full Test. Test the car with switches several times, then leave it alone for a few minutes. If it activates by it's self repeatedly, there's probably a short circuit. Pull it apart again, and examine the accuracy of your soldering carefully, especially on the socket. Don't worry if occasionally the car activates by itself. This is due to a build up of static electricity, and is fairly normal. Modification: It's quite easy to make any radio controlled car stand out better for people with a sight impairment or tracking disability. Simply attach glow-stick, glow-laces, helium balloons or el-wire (as pictured) to the car. See more at http://www.oneswitch.org.uk/1/tumbler-tron.htm Author: http://www.oneswitch.org.uk/4/DIY/tumbler.htm

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01/05/2015
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D.i.y. Tumbler