I'm sure most people have heard of the most useless machine. When it is useless x useless he calls it useless squared. I built a simpler useless squared that does't use a DPDT switch nor does it use two motors. The video will explain.
Step 1: Get the Parts
You will need: 2 555 timers (You only need one but get two just in case you break one.) Jumper Wires/ Component Leads Breadboard/Protoboard 1x: 1Kohm resistor 4.7Kohm resistor 10Kohm resistor 33Kohm resistor 68Kohm resistor 0.01uF capacitor 0.1uF capacitor General Purpose NPN transistor (don't use a power transistor...it requires more power to operate.) (2N3904,BC547, etc.) Servo Motor (DON' T use a micro servo...no torque...) (Use a continuous rotation servo if not...mod a regular servo.) Batteries and accompanying holders SPDT Slide Switch (don't use rocker or toggle)