BEAM robot building techniques allow you to build fun and simple little robots with lots of room for stylizing. BEAM vibrobots use pager motors to move. We’ll use what’s known as a “solar engine” (Type 1 “FLED” variety), store bought or scavanged pager motors, and some paperclips. Let the build begin!
BEAM is a type of robot design that allows you to create little robot/robot-like critters and vehicles mainly using basic analog components (resistors, transistors, capacitors, diodes, LEDs). The challenge is to try and get as much robot-like behavior using these components. BEAM is an acronym for “Biology, Electronics, Aesthetics, Mechanics” and these four elements serve as inspiration in all BEAM design. You can find our more about BEAM on our BEAM robot page. You can find out more information on the FLED-type solar engine of the BEAM Wiki.
Solder on the LED. Make sure the negative lead (shorter leg) connects to the negative wire of the solar panel. Make sure the positive lead connects to the center lead on the 3906.
Solder on the 2.2KΩ resistor as indicated in the illustration. Unlike the LED, it is not polarity sensitive and it doesn't matter what direction the resistor faces.
Solder on 4700uF capacitor.
Solder on the motor, as shown in the diagram.
Congratulate yourself. You now have a FLED-based BEAM solar engine built.
This solar engine is called a FLED-type to stands for "Flashing LED." When the circuit has charged up enough to normally flash the LED, it acts as a conductor which allows electricity to flow through it and trigger the discharge phase of the circuit, sending precious power to our chariots.