This is a module meant to slot into any standard speeduino v0. It uses the normal trigger signal conditioner pinout. ECM jumpers. Optocouplers (also called Photocouplers, Optoisolators, and Optical Isolators) are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many optocoupler manufacturers including Broadcom, onsemi, Renesas, Toshiba, Vishay & more. They galvanically isolate the low- and high-voltage sides of a circuit by using an infrared emitter to transmit the control signal to a photo detector and reduce electrical noise. There are many different applications for optocoupler circuits, so there are many different design requirements, but a basic design for an optocoupler providing isolation for example between two circuits, simply involves the choice of appropriate resistor values for the two resistors R1 and R2. Optocouplers use LEDs and phototransistors to close circuits. Single, dual, and linear optocouplers made by Littelfuse can be paired with shunt resistors to adjust the current. Last Updated on March 15, 2025 by Swagatam 51 Comments OPTOCOUPLERS OR OPTOISOLATORS are devices that enable efficient transmission of DC signal and other data across two circuit stages, and also simultaneously maintain an excellent level of electrical isolation between them.