The circuit is a 1381-based solar engine circuit, and is built around the motor, with components placed radially around a central axis. This is one of the first free-formed BEAM bots that I built. When they hit something, they tilt onto another axis, and go off in a different direction. Symets rest on their motor spindle, and scoot long the ground when the motor spins. A solar engine circuit monitors the voltage, and when it trips power is dumped through the motor. The solar cell charges the capacitors (one or more in parallel). The Symet use one of the simplest BEAM circuits. Quite quickly, and smoothly to point towards the brightest part of the environment. This guy fires every few seconds under bright light, and almost continuously in daylight, rotating It has a cogĪttached to the spindle, which allowed me to mount it in a drilled-out hard drive part for the base. The motor is a nice geared 141:1 MicroMo motor I got off Ebay. This is another solar powered “power-smart” head, built around a 74AC240 chip. It’s been a while since I’ve built any BEAM robots, but some wet weather prompted me to get back to the
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