photosensors

[Caroline]

For a class project, we are constructing a skeeball machine. We need
to purchase photosensors for each hole to detect the ball passing
through. We are unfamiliar in this area, and would appreciate any
help in directing us to the right photosensors and to the purchase
location. Thank You!

 

[Bob Monaghan]

try Radio Shack for their infrared emitter and detector pairs etc.

They also published a booklet by Forest Mims on Optoelectronics with a
number of simple circuits which would work. Delton Horn with Tab books
also published a guide to optoelectronics circuits for experiments
(optoelectronics was the title IIRC) - probably available via interlibrary
loan to most libraries?

A magazine like Nuts and Volts would have a number of parts sources ads
which would provide low cost surplus components, if $$ are an issue and
you need a lot of them ;-) The last bunch I salvaged some years ago came
from a punched card reader, so that was some time ago ;-)

hth bobm
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* Robert Monaghan POB 752182 Southern Methodist Univ. Dallas Tx 75275 *
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