Steady Hand Fun With The Raspberry Pi - Adrirobot

STEADY HANDSYou don't have to get complicated to get a great deal of funfrom an interfacing project. Electrically this is just about assimple as you can get, however it has a very good fun totechnology ratio.DIFFICULTY: INTERMEDIATESteady hands is a very old game, however,with a Raspberry Pi we can give it a new twist.The idea is that you have to guide a wire loopalong a bendy wire without making the twotouch. You can make this as complex or aseasy as you like by having more bends in thewire or having the loop smaller.Materials-Bare single core Wire (2mm Dia)e.g. Metal coat hanger. If using wire itneeds to be thick enough to hold its shape.-Stranded wire (insulated)-Block of wood (size depends on yourdesign of 'bent coathnager')-Electrical TapeTools-Drill-Drill Bit (just smaller than the diameterof the wire)-Solder-Soldering IronA - Physical pin 7 GPIO pin 4B - Physical pin 3 GPIO pin 0C - Physical pin 5 GPIO pin 1D - Physical pin 6 GroundThe Construction1 . Drill holes in the wooden block for the 'bentcoathanger/wire' just smaller than thediameter of the coathanger/wire so that thewire will hold itself up. Make sure to space thetwo holes far enough apart to accomodateyour design.2. Make the wire loop and solder a length ofwire to it. You might want to add a covering ofinsulation tape, or better self amalgamatingtape, over the end you hold.3. Put the 'bent coathanger/wire' through thewire loop and then into the wooden block.4. Solder a length of stranded wire (insulated)to one end of the 'bent coathanger/wire'.5. Drill two holes on either side the bentcoathanger/wire as shown in the image belowfor the rests.6. Put two short lengths of coathanger/wire toact as rests in these holes. These will detectwhen the game starts and when the wireloopreaches the end. Bend them so the loop willrest against them without shorting out to thebent wire.4