hi, i'm trying to use an optcoupler to pass a rc signal to the MCU. i'm using the HCPL-4661 dual, datasheet is here: http://www.datasheetcatalog.org/datasheet/hp/HCNW2611.pdf
i've connected diode 1 properly, i have an external LED that flashes correctly. i've also connected the vcc and ground pins to the power supply of the MCU. the diode is ofcourse working with the signal and ground of the reciever i want to interface. the datasheet also mentions connecting a 0.1μF capacitor between vcc and ground, and i managed to place a couple of them there with a final capacitance of about 0.162μF. so now i'm expecting to get an output on pin 7 following the input of diode1 but nothing happens. i tried removing the coupling capacitors but nothing changed (not that i expected anything anyway). the LED i connected on the output wont flash at all (i tested it and know it works - i swapped the LEDs as well) and i checked if its getting its supply and all is as it should be - i measured on the pins to be sure - 5V crystal clear.
i dont have any idea what i'm doing wrong - any help is appreciated. thanks ^_^
i've connected diode 1 properly, i have an external LED that flashes correctly. i've also connected the vcc and ground pins to the power supply of the MCU. the diode is ofcourse working with the signal and ground of the reciever i want to interface. the datasheet also mentions connecting a 0.1μF capacitor between vcc and ground, and i managed to place a couple of them there with a final capacitance of about 0.162μF. so now i'm expecting to get an output on pin 7 following the input of diode1 but nothing happens. i tried removing the coupling capacitors but nothing changed (not that i expected anything anyway). the LED i connected on the output wont flash at all (i tested it and know it works - i swapped the LEDs as well) and i checked if its getting its supply and all is as it should be - i measured on the pins to be sure - 5V crystal clear.
i dont have any idea what i'm doing wrong - any help is appreciated. thanks ^_^