Hello
I have desoldered some receiver modules from a couple of old VHS players and so. One receiver module is called TFMS5360 which I am focusing on, the others are similar, but have no visible name on it. The module sinks current through my red control LED in a fine blinking pattern which is also visible on my scope when pushing a TV remote control button. Which is fun. But then I bought my own IR LEDS to try and make some remote projects, but it has already failed in the learning process; when my IR LED is switched on the red control lamp only blinks weakly 1-3 times (barely visible), about 500us long pulses. Then it stops blinking at all after about 2-3ms, while I am still holding the IR LED button down!
Reading the datasheet for the receiver module I see there are specific modules for different carrier frequencies. This is still a bit vague for me; does it mean my pulses need to be at this frequency? Will it not work as a phototransistor? My infrared LEDs are wavelength 850nm, from ledshoppe.com. I could have chosen the 940nm ones, but I just didn't know which difference it would make at that time. Could this be my problem? I am using the wrong LED type?
I have desoldered some receiver modules from a couple of old VHS players and so. One receiver module is called TFMS5360 which I am focusing on, the others are similar, but have no visible name on it. The module sinks current through my red control LED in a fine blinking pattern which is also visible on my scope when pushing a TV remote control button. Which is fun. But then I bought my own IR LEDS to try and make some remote projects, but it has already failed in the learning process; when my IR LED is switched on the red control lamp only blinks weakly 1-3 times (barely visible), about 500us long pulses. Then it stops blinking at all after about 2-3ms, while I am still holding the IR LED button down!
Reading the datasheet for the receiver module I see there are specific modules for different carrier frequencies. This is still a bit vague for me; does it mean my pulses need to be at this frequency? Will it not work as a phototransistor? My infrared LEDs are wavelength 850nm, from ledshoppe.com. I could have chosen the 940nm ones, but I just didn't know which difference it would make at that time. Could this be my problem? I am using the wrong LED type?