The HiViz.com WorkShop
Crossed Beam Photogate PCB Kit, unassembled
The kit comes unassembled. Assembly instructions are here.
The view below shows an assembled crossed-beam photogate triggering on the passage of a tufted titmouse. Flash units (not provided) are positioned to either side of the gate.
Click on any photo for a larger view.
A close up of the control box with the functions labeled is shown below. The connection of the control box to the photogate frame is also shown. The frame may be painted whatever color you wish. We chose black for the photo below. The frame shown above is unpainted.
Control box connected to frame (to right)
Control box (below)