The SOLAR TRACKER 2 CIRCUIT KIT (Catalog #ST2) from MTM Scientific contains all the electrical parts you need to build a circuit which will automatically find and follow the sun across the sky. This tracker circuit finds the sun at dawn, follows the sun during the day, and resets for the next day. This kit is perfect for driving a single axis solar tracker with a 12 VDC gear motor or linear actuator that you provide. The kit includes 2 photocells, an IC comparator, resistors, diodes, 2 limit switches, 2 relays, terminal connectors and a 20 page booklet. A printed circuit board is also included with the kit, which makes it easy to assemble and test the circuit quickly. The tracker circuit is powered by the same 12 VDC that drives your motor. Single axis solar tracking is great for projects such as solar optical concentrators, solar ovens, fresnel lenses, and solar electric photovoltaic panels. The detailed instructions include the circuit diagram, an explanation of how the circuit works, a description of how single axis sun tracking works and advice for selecting a DC gearhead motor. This kit is perfect for the person that wants a quick start on building a single axis solar tracker. NEW FEATURES of ST2: This updated solar tracker design includes many new and useful features suggested by our customers during the last 5 years. This circuit has automatic reset to the East at sunset to capture first light the next morning. Another useful feature is the simplified wiring connections, which are all made using screw type wire terminals. The circuit board (2.5 x 2.75 inches) has been redesigned to fit inside a standard outdoor junction box. In addition, the ST2 allows using a motor power supply voltage other than 12 VDC, for example a 24 VDC linear actuator. Please note that this is a kit which requires assembly and soldering.
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