For the mark 2 i had used a slotted optical switch and narrow vane to detect 360º cam rotation. This allowed me to experiment and make sure things worked before i added it to the camera controller.
Input Interfacing Circuits Connect To The Real World
Slotted optical switch circuit diagram. Below with the beam broken the led goes out. To get started i created a small test circuit with just the interrupter. The infrared light from the built in led is either blocked or not blocked and obviously zero light is passing through either coin. The optical switch is an on off switch so its not going to help you with that. Sometimes your coin mechanism has separate paths for different coins and in that case you might need two or more optical switches. Difficult to tell from the above photo but the red led is on.
How to build simple optical switch november 30 2010 category. 9 thoughts on how to set up a photo interrupter or slotted optical switch on the arduino steven on november 7 2012 at 357 am said. See photograph 27for the mark 3 the slotted optical switch is used to control the pulses to the winding motor to keep a constant tension on the film as it exits the film gate. The 555 is proved to be the most versatile and ubiquitous ic all over the worldthis is a possible use. Just add threshold detection transitor. I was looking for exactly this having salvaged a couple of slotted optical sensors from an old printer.
When an object such as a ticket or a small tab that is part of some mechanical system is placed in the sensor slot the beam of infrared light from the led to the phototransistor is blocked turning off the phototransistor. Please view our large selection of optical switches below. Optical switches are available at mouser electronics from industry leading manufacturers. R1 10k resistor is a pull down resistor. A simple example of a slotted optical switch is shown in fig 542 with its schematic diagram in fig. Figure 14 shows the circuit diagram of the slotted optical vane switch.
Mouser is an authorized distributor for many optical switch manufacturers including honeywell omron on semiconductor optek more. Brilliant thanks for taking the time to write this up. Simple inverting schmitt trigger.
Gallery of Slotted Optical Switch Circuit Diagram
