Home Motor drivers Solar engines Sensors Complete robots Pummers Ornaments Heads Solarrollers Photopoppers 1381 poppers 555 poppers 74x14 poppers 74x240 poppers BEAMant Miller popper "FRED" popper Walkers Misc. circuits   The BEAM Circuits Collection is a BEAM Reference Library site.		BEAM photopopper circuits Lots of circuits to make your popper pop... Here, I've attempted to gather together some useful photopopper circuits. Note that most photopopper circuits are based on just a pair of solar engine circuits wired together ("back to back). This means you can get additional circuits by replacing solar engines in the diagrams below with other solar engine circuits. Generally in such cases, it's good to incorporate a variable resistor in your circuit so that you can "tune" the two engines for balanced behavior (else, due to manufacturing variances in component values, your photopopper will tend to move in curves). Locally, I've got pages on 7 basic types of photopopper circuits: Basic 1381-based photopopper, and a 1381-based photopopper with touch sensors A 555-based photopopper design Two 74*14-based photovore designs Several 74*240-based photovore designs The FRED photopopper The Miller photopopper Meanwhile, here are links to circuits described on other sites: Photopopper tutorial by Chiu-Yuan Fang 1 page, 21 images / 363 KBytes inline Timeless, ubiquitous and simple; 1381-based photovore with turning switches. BeamAnt by Ian Bernstein 1 page, 4 images / 15 KBytes inline Fairly sophisticated 74*240-based photovore with emergent behavior. Bicore-based photovore by Justin Fisher 1 page, 1 image / 44 KBytes inline Bicore-based design with reverse; uses 74*240 bicore and 74*245 motor driver. SunEater_V by Steve Bolt 1 page, 6 images / 111 KBytes inline Incorporating the SuneaterIV SE; photos, schematic, PCB design. Ucoba by BotDoc 1 page, 2 images / 78 KBytes inline Ucoba -- a photovore with emergent behavior (based on the BEAMAnt 74*240-based circuit). For more information... The Bestiary pages on photopoppers start here.
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