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Fig. 3. Data lines between 64-feeder array, six experimental cages and computer. Arrows show direction of data transfer. IO-cards are Decision Computer model 48-192 I/O ISA based on IC 8255. Camera switch is PIH 200-8, CS Lilin (Sintron) and motion alarm is PIH 6004, CS Lilin (Sintron), modified for computer operation. Pumps are custom stepper motor pumps, which move a pallet along a screw spindle that, in turn, moves the piston of a gas tight injector (Hamilton, 1025TTL, 25 ml). In forward drive it delivers nectar and in reverse drive the pump can empty the tube system for automatic cleaning operation. For further details see supplementary material.





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