User manual DALLEE ELECTRONICS TURNTABLE INDEXER

[. . . ] Then you would merely turn the toggle switch on and set it to the off position when past the stop before the desired stop. For use with other type turntable mechanisms it is suggested to study the BOWSER installation and try to apply that operation to your type turntable. As an example, the optics could be mounted on top of the turntable and with a solid rotating bed (as some have) you could read small vertical wires. INSTALLATION INSTRUCTIONS Read all instructions first, then decide on the best method for your installation. [. . . ] The brackets can be either commercial brackets since the thickness is not important in this application or they can be fabricated from 3/8" (or larger) Plastruct molded plastic right angle extrusions which are available from most hobby stores. Cut the strip into small lengths, make an oblong hole for mounting, and with a clean surface to place the pattern on, remove the backing from the labels and place the optical patterns on the face. If more glue is necessary, use "Glue Stic" for reattachment. Other glues may seep into the toner and close the gap so that the optics cannot read it properly. The optics should read the center pass of the printed line. It is not important to have an exact amount of black on either side of the center white stripe. What is important is to have the bracket covered on either side of the center white stripe. Otherwise the optics will read the exposed bracket and stop on those spots as well. The black area is equivalent to having nothing in front of the optics. If you are operating as an "O" gauge or larger type operator, then paper clips bent and cut to position will work just fine. The bracket must be made to clear the tension spring and wire. A longer screw to secure this wire may be used. PAINTED STRIPE SENSOR The optics do not sense black or the lack of focus. A painted sensor can be made two different ways. The first method is done by placing a fine line on the bracket, painting brackets flat black, after the paint has dried peel open the reflective stripe. The other method is to again paint the face of the bracket flat black. Then place a fine white line on the face of the bracket. The main problem with painting the bracket flat black is that some types of paint still reflect infra-red light. To be sure that yours does not, simply paint a bracket. After it dries hold it in front of the optical pickup (at a proper focal distance - the optics will detect your finger nail). If the relay does not activate there is no reflection detected and the paint is OK to use. ANGLE BRACKET SENSOR The side of a narrow angle bracket or paper clip can be used to operate the indexer. The thickness of the bracket or paper clip will effect the accuracy of clockwise and counter-clockwise operation (see Sensor Accuracy drawing below). This accuracy is however OK for use in larger gauges, beginning with "O" gauge and possibly "S" gauge as well. Sensor Accuracy Clockwise rotation - sensor stops turntable operation slightly after reflection detected. Counter-clockwise rotation - sensor stops turntable operation slightly after reflection detected. Sensor accuracy determined by thickness of sense bracket. [. . . ] In the first position the variable AC would power the turntable operation. The second position would power the tracks in the yard area. This way a small power transformer can be utilized quite well in the yard area. Don't forget to insulate the yard feeder from the main line. [. . . ]