I have a transmitter which is connected to two receivers or (detector) modules. I need both of them to detect the transmission simultaneously and send a feedback signal to digital pin 2 on the other Arduino board. But so far I’m able to make only one detector circuit work at a time. If I connect both the detectors to digital pin 2 (as shown in the image attached), a distorted signal is received. So is there any other way of doing this? I’m open to any kind of suggestions even if I have to change the components.
Two photo diodes in parallel (both between pin and ground),
with a single pull up resistor from pin to VCC (3.3volt).
Thanks for posting the diagram.
Don't know why I said 3.3volt.
Must have assumed a 3.3volt Arduino.
If this is a 5volt Arduino, then the resistor can go to 5volt.