Abstract
A photocell-actuated tachometer for running wheels is described. The number of counts generated per revolution of the wheel is a function of the number of trip wires inserted in the hub of the wheel axle. The circuit is presented in configurations that actuate relay contact closures and as a direct driver of TTL logic.
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Porter, J.J., Furber, A.M. & Geise, E.G. A running wheel tachometer. Behavior Research Methods & Instrumentation 14, 52–53 (1982). https://doi.org/10.3758/BF03202125
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DOI: https://doi.org/10.3758/BF03202125